Dr. N.D.Pradeep Singh's

Research Page



88. Sandipan Biswas, Y. Rajesh, Shrabani Barman, Manoranjan Bera, Amrita Paul, Mahitosh Mandal and N. D. Pradeep Singh, A dual-analyte probe: hypoxia activated nitric oxide detection with phototriggered drug release ability, Chem. Commun., 2018, DOI: 10.1039/c8cc01854e.


87. Yarra Venkatesh, Hemant Kumar Srivastava, S. Bhattacharya, Muneshwar Mehra, P. K. Datta, S. Bandyopadhyay, and N. D. Pradeep Singh, One and Two-Photon Uncaging: Carbazole Fused o-Hydroxycinnamate Platform for Dual Release of Alcohols (Same or Different) with Real-Time Monitoring, Org. Lett., 2018, 20, 2241-2244.


86. Yarra Venkatesh, Joyjyoti Das, Amrita Chaudhuri, Anupam Karmakar, Tapas K. Maiti, and N. D. Pradeep Singh, Light Triggered Uncaging of Hydrogen Sulfide (H2S) with Real-Time Monitoring, Chem. Commun., 2018, 54, 3106-3109.



85. Sandipan Biswas, Rakesh Mengji, Shrabani Barman, Venugopal Vangala, Avijit Jana and N. D. Pradeep Singh , ‘AIE + ESIPT’ Assisted Photorelease: Fluorescent Organic Nanoparticles for Dual Anticancer Drug Delivery with Real- Time Monitoring Ability, Chem. Commun., 2018, 54, 168-171.


84. Krishna Kalyani Behara, Y Rajesh, Yarra Venkatesh, Bhaskar Rao Pinninti, Mahitosh Mandal, N. D. Pradeep Singh, Cascade photocaging of diazeniumdiolate: A novel strategy for one and two photon triggered uncaging with real time reporting , Chem. Commun., 2017, 53, 9470 - 9473.


83. Moumita Gangopadhyay, Rakesh Mengji, Amrita Paul, Yarra Venkatesh, Venugopal Vangala, Avijit Jana, N. D. Pradeep Singh. , Redox-responsive Xanthene-coumarin-chlorambucil-based FRET-guided theranostics for “activatable” combination therapy with real-time monitoring , Chem. Commun., 2017, 53, 9109 - 9112. .



82. Sandipan Biswas, Joyjyoti Das, Shrabani Barman, Bhaskara Rao Pinninti, Tapas K. Maiti, and N. D. Pradeep Singh, An Environment Activatable Nanoprodrug: Two-Step Surveillance in the Anticancer Drug Release, ACS Appl. Mater. Interfaces, 2017, 9, 28180–28184.


81. Amrita Chaudhuri, Yarra Venkatesh, Krishna Kalyani Behara, and N. D. Pradeep Singh, Bimane: A Visible Light Induced Fluorescent Photoremovable Protecting Group for the Single and Dual Release of Carboxylic and Amino Acids, Org. Lett. 2017, 19, 1598-1601.



80. Laurynas Pukenas, Panida Prompinit, B. Nishitha, Daniel J. Tate, N. D. Pradeep Singh, Richard J. Bushby, Christoph Wälti, and Stephen D. Evans , Soft Ultraviolet (UV) Photopatterning and Metallization of Self-Assembled Monolayers (SAMs) Formed from the Lipoic Acid Ester of 2-Hydroxy-1-acetylpyrene: The Generality of Acid-Catalyzed Removal of Thiol-on-Gold SAMs using Soft UV Light , ACS Appl. Mater. Interfaces 2017, 9, 18388-18397.



79. Sk. Sheriff Shah and N. D. Pradeep Singh , Pseudohalide Assisted Aerobic Oxidation of Alcohols in the Presence of Visible-Light, Tetrahedron Letters, 2018, 59 247–251.




78. Amrita Paul, Rakesh Mengji, Olive Abraham Chandy, Surajit Nandi, Manoranjan Bera, Avijit Jana, Anakuthil Anoop and N. D. Pradeep Singh , ESIPT-Induced Fluorescent o-Hydroxycinnamate: Self-Monitoring Phototrigger for Prompt Image-Guided Uncaging of Alcohols, Org. Biomol. Chem. 2017, DOI:10.1039/C7OB02280H.




77. Yarra Venkatesh, Surajit Nandi, Maniklal Shee, Biswajit Saha, Anakuthil Anoop and N. D. Pradeep Singh, Bis-Acetyl Carbazole: Photoremovable Protecting Group for Sequential Release of Two Different Functional Groups and its Application for Therapeutic Release, Eur. J. Org. Chem. 2017, DOI:10.1002/ejoc.201701253.



76. Krishna Kalyani Behara, Y Rajesh, Amrita Chaudhuri, Sandipan Biswas, Mahitosh Mandal, N. D. Pradeep Singh , Wavelength Dependent, Sequentially Activated, Dual Anticancer Drug Delivery System with Photoinduced Fluorescence off-on for Real Time Imaging, ChemistrySelect 2017, 2, 4033 – 4038.




75. Shrabani Barman, Joyjyoti Das, Sandipan Biswas, T. K. Maiti, and N. D. Pradeep Singh, Spiropyran-Coumarin Platform: An Environment Sensitive Photoresponsive Drug Delivery System for efficient cancer therapy, J. Mater. Chem. B, 2017, 5, 3940-3944.




74. S. Karthik, Avijit Jana, M. Selvakumar, Yarra Venkatesh, Amrita Paul, Sk. Sheriff Shah, and N. D. Pradeep Singh, Coumarin Polycaprolactone Polymeric Nanoparticles: Light and Tumor microenvironment activated Cocktail Drug Delivery, J. Mater. Chem. B, 2017,5, 1734-1741.






73. Shrabani Barman, Sourav K. Mukhopadhyay, Sandipan Biswas, Surajit Nandi, Moumita Gangopadhyay, Satyahari Dey, Anakuthil Anoop, N. D. Pradeep Singh , A p-Hydroxyphenacyl–Benzothiazole–Chlorambucil Conjugate as a Real-Time-Monitoring Drug-Delivery System Assisted by Excited-State Intramolecular Proton Transfer, Angew. Chem. Int. Ed.2016, 55, 1 – 6.


72. Yarra Venkatesh, Y. Rajesh, S. Karthik, A C Chetan, Mahitosh Mandal, Avijit Jana, and N. D. Pradeep Singh, Photocaging of Single and Dual (Similar or Different) Carboxylic and Amino Acids by Acetyl Carbazole and its Application as Dual Drug Delivery in Cancer Therapy, J. Org. Chem. 2016, 81, 11168-11175.

This work has been included in Wikipedia.


71. Yarra Venkatesh, S. Karthik, Y. Rajesh, Mahitosh Mandal, Avijit Jana, and N. D. Pradeep Singh, Three Arm, Biotin-tagged Carbazole-Dicyanovinyl-Chlorambucil Conjugate: Simultaneous Tumor Targetting, Sensing and Photoresponsive Anticancer Drug Delivery, Chem. Asian J. 2016, 11, 3482 – 3486.


70. Sandipan Biswas, Joyjyoti Das, Shrabani Barman, Sk. Sheriff Shah, Moumita Gangopadhyay,Tapas K. Maity, N. D. Pradeep Singh, Single Component Image Guided 'On-demand' Drug Delivery System for Early Stage Prostate Cancer, Sensors & Actuators: B. Chemical. DOI: 10.1016/j.snb.2017.01.008.


69. Moumita Gangopadhyay, Avijit Jana, Y. Rajesh, Manoranjan Bera, Sandipan Biswas, Nilanjana Chowdhury, Yanli Zhao, Mahitosh Mandal, and N. D. Pradeep Singh, Organic Nanoparticle-Based Fluorescent Chemosensor forSelective Switching ON and OFF of Photodynamic Therapy (PDT), ChemistrySelect 2016, 1, 6523 – 6531.


68. Ramalingam Dineshkumar, Amrita Paul, Moumita Gangopadhyay, N. D. Pradeep Singh, and Ramkrishna Sen, Smart and Reusable Biopolymer Nanocomposite for Simultaneous Microalgal Biomass Harvesting and Disruption: Integrated Downstream Processing for a Sustainable Biorefinery, ACS Sustainable Chem. Eng. 2016, DOI: 10.1021/acssuschemeng.6b02189.


67. Moumita Gangopadhyay, Sourav K. Mukhopadhyay, Sree Gayathri, Sandipan Biswas, Shrabani Barman, Satyahari Dey and N. D. Pradeep Singh , Fluorene–morpholine-based organic nanoparticles: lysosome-targeted pH-triggered two-photon photodynamic therapy with fluorescence switch on–off, J. Mater. Chem. B, 2016, 4, 1862--1868.


66. Amrita Paul, Avijit Jana, S. Karthik, Manoranjan Bera, Yanli Zhao and N. D. Pradeep Singh , Photoresponsive real time monitoring silicon quantum dots for regulated delivery of anticancer drugs, J. Mater. Chem. B, 2016,4, 521-528.






65. Sanghamitra Atta, Amrita Paul, Rakesh Banerjee, Manoranjan Bera, Mohammed Ikbal, Dibakar Dhara and N. D. Pradeep Singh, Photoresponsive polymers based on a coumarin moiety for the controlled release of pesticide 2,4- D, RSC Adv., 2015,5, 99968-99975.



64. Sanghamitra Atta, Manoranjan Bera, Tirthartha Chattopadhyay, Amrita Paul, Mohammed Ikbal, Mrinal K. Maiti, N. D. Pradeep Singh, Nano-pesticide formulation based on fluorescent organic photoresponsive nanoparticles: for controlled release of 2,4-D and real time monitoring of morphological changes induced by 2,4-D in plant systems, RSC Adv., 2015, 5, 86990-86996.



63. Sandipan Biswas, Moumita Gangopadhyay, Shrabani Barman, Jit Sarkar, N.D. Pradeep Singh, Simple and efficient coumarin-based colorimetric and fluorescent chemosensor for F- detection: An ON1-OFF-ON2 fluorescent assay, Sensors and Actuators B: Chemical, 2015, 222, 823-828.



62. Moumita Gangopadhyay, Tanya Singh, Krishna Kalyani Behara, S. Karwa,S. K. Ghosh and N. D. Pradeep Singh, Coumarin-containing-star-shaped 4-armpolyethylene glycol: targeted fluorescent organic nanoparticles for dual treatment of photodynamic therapy and chemotherapy, Photochem. Photobiol. Sci.,2015, 14, 1329.



61. Shrabani Barman, Sourav K. Mukhopadhyay, Moumita Gangopadhyay,Sandipan Biswas, Satyahari Dey and N. D. Pradeep Singh, Coumarin–benzothiazole–chlorambucil (Cou–Benz–Cbl) conjugate: an ESIPT based pH sensitive photoresponsive drug delivery system, J. Mater. Chem. B, 2015, 3, 3490.



60. Sk. Sheriff Shah, S. Karthik and N. D. Pradeep Singh, Vis/NIR light driven mild and clean synthesis of disulfides in the presence of Cu2(OH)PO4 under aerobic conditions, RSC Adv., 2015, 5, 45416.


59. Moumita Ganguly, Sourav K. Mukhopadhyay,   Karthik S,   Sharabani Barman and    Pradeep N.D. Singh, Targeted Photoresponsive TiO2-Coumarin nanoconjugate for efficient Combination therapy in MDA-MB-231 breast cancer cells: Synergic effect of Photodynamic Therapy (PDT) and Anticancer drug Chlorambucil, Med.Chem.Commun.,2015, 6, 769–777.



58. Karthik S, Prashanth Kumar B N, Moumita Gangopadhyay, Mandal Mahitosh,Pradeep N.D. Singh, Targeted, Image Guided Dually Locked Photoresponsive Drug Delivery System, J. Mater. Chem. B, 2015,3, 728-732.






57. Sridhar Rajam, Abhijit V. Jadhav, Qian Li, Sujan K. Sarkar, Pradeep N. D. Singh, Ahleah Rohr, Tamara C. S. Pace, Rui Li, Jeanette A. Krause, Cornelia Bohne, Bruce S. Ault, and Anna D. Gudmundsdottir, Triplet Sensitized Photolysis of a Vinyl Azide: Direct Detection of a Triplet Vinyl Azide and Nitrene, J. Org. Chem., 2014, 79 (19), pp 9325–9334



56. S. Karthik,   Avijit Jana,  Biswajit Saha,   B. Krishna Kalyani,   Sudip Kumar Ghosh,   Yanli Zhao and   N. D. Pradeep Singh, Synthesis and in vitro evaluation of charge reversal photoresponsive quinoline tethered mesoporous silica for targeted drug delivery, J. Mater. Chem. B, 2014,3, 728-732.



55. S. Dasgupta, S. Atta, N. D. Pradeep Singh, D. Deb, W. S. Kassel, M. Bhattacharjee, Synthesis and Structure of [Et3NH][Fe(HL)2], {H3L = L-2-(3,5–ditert-butyl-2- hydroxyl benzyl amino)-succinic acid} and its Catalytic Activity Towards Efficient Photodegradation of dyes in presence of H2O2, Eur.J. Inorg. Chem., 2014, 30, 5125-5134.


54. R. K. Sahoo, S. Atta, N.D.P Singh, C. Jacob, Influence of functional derivatives of an amino-coumarin/ MWCNT composite organic hetero-junction on the photovoltaic characteristics, Materials Science in Semiconductor Processing, 2014, 25, 279-285.



53. Shrabani Barman , Sourav K. Mukhopadhyay , Krishna Kalyani Behara , Satyahari Dey , and N. D. Pradeep Singh 1-Acetylpyrene–Salicylic Acid: Photoresponsive Fluorescent Organic Nanoparticles for the Regulated Release of a Natural Antimicrobial Compound, Salicylic Acid, ACS Appl. Mater. Interfaces, 2014, 6, 7045-7054.



52. Mohammed Ikbal, Rakesh Banerjee, Shrabani Barman, Sanghamitra Atta, DibakarDhara, N. D. Pradeep Singh 1-Acetylferroceneoxime based Photoacid Generators: Application towards sol-gel transformation and development of photoresponsive polymer for controlled wettability and patterned surfaces, Salicylic Acid, J. Mater. Chem. C, 2014, 2, 4622-4630.




51. Mohammed Ikbal,Biswajit Saha,Sharabani Barman,Sanghamitra Atta,Debranjan Banerjee,Sudip Ghosh, N.D.Pradeep Singh Benzo[a]acridinyl methyl esters as pH Sensitive Fluorescent Photoactive precursors: Synthesis, Photophysical, Photochemical and Biological Application, Org. Biomol. Chem., 2014, 12, 3459–3469.







50. Patent: Sanghamitra Atta, Rakesh Banerjee, Mohammed Ikbal, Dibakar Dhara, N. D. Pradeep Singh; No. 867/Kol/2013


49. Patent: Sanghamitra Atta, Tirthartha Chattopadhyay, Mohammed Ikbal, Mrinal, K. Maiti, N. D. Pradeep Singh; No. 555/Kol/2013


48. Nilanjana Chowdhury, Moumita Gangopadhyay, S. Karthik, Mithu Baidya, S.K. Ghosh,N.D. Pradeep Singh; Synthesis, photochemistry, DNA cleavage/binding and cytotoxic properties of fluorescent quinoxaline and quinoline hydroperoxides. Journal of Photochemistry and Photobiology B: Biology 130, 2014,188-198


confocal microscopy


47. Avijit Jana, Biswajit Saha, Deb Ranjan Banerjee, Sudip Kumar Ghosh, Kim Truc Nguyen, Xing Ma , Qu Qiuyud Yanli Zhao and N. D. Pradeep Singh; Photocontrolled Nuclear-Targeted Drug Delivery by Single Component Photoresponsive Fluorescent Organic Nanoparticles of Acridin-9-methanol. Bioconjugate Chem.,2013, 24 (11) pp 1828-1839




46. S. Karthik, Biswajit Saha, Sudip Kumar Ghosh and N. D. Pradeep Singh; Photoresponsive quinoline tethered fluorescent carbon dots for regulated anticancer drug delivery. Chem. Commun., 2013, 49, 10471--10473




45. S. Karthik, Nagaprasad Puvvada, B. N. Prashanth Kumar, Shashi Rajput, Amita Pathak, Mahitosh Mandal,and N. D. Pradeep Singh; Photoresponsive Coumarin-Tethered Multifunctional Magnetic Nanoparticles for Release of Anticancer Drug. ACS Appl. Mater. Interfaces 2013, 5, 5232-5238




44. Avijit Jana , Biswajit Saha , Karthik S , Sharabani Barman , Mohammed Ikbal , Sudip Ghosh and Pradeep N.D. Singh; Fluorescent Photoremovable precursors (acridin-9-ylmethyl)ester: Synthesis, Photophysical, Photochemical and Biological applications. Photochemical & Photobiological Sciences, 2013, 12(6), 1041-52




43. Partha Sarathi Addy , Baisakhee Saha , N. D. Pradeep Singh , Amit K. Das , Jacob T. Bush , Clarisse Lejeune , Christopher J. Schofield and Amit Basak; 1,3,5-Trisubstituted benzenes as fluorescent photoaffinity probes for human carbonic anhydrase II capture. Chem Comm, 49, 1930-1932, 2013


human carbonic anhydrase


42.Sanghamitra Atta , Mohammed Ikbal , Nishitha Boda , Samiran S. Gauri and N. D. Pradeep Singh; Photoremovable protecting groups as controlled-release device for sex pheromone. Photochem. Photobiol. Sci.2013 12(2),393-403







41. Mohammed Ikbal, Rakesh Banerjee, Dibakar Dhara, Anakuthil Anoop, N. D. Pradeep Singh.Synthesis, Photophysical and Photochemical Properties of Photoacid Generators Based on N-Hydroxyanthracene-1,9-dicarboxyimide and Their Application toward Modification of Silicon Surfaces J. Org. Chem. 2012, 77, 10557-10567




40. Avijit Jana , Biswajit Saha , Mohammed Ikbal and Sudip Ghosh, N.D. Pradeep Singh. 1-(Hydroxyacetyl)pyrene a new fluorescent phototrigger for cell imaging and caging of alcohols, phenol and adenosine. Photochem. Photobiol. Sci.2012,11, 1558-1566




39. Nilanjana Chowdhury, Sansa Dutta, S.karthik, Swagata Dasgupta, Anakuthil Anoop, N.D. Pradeep Singh.Azido carbonyl compounds as DNA cleaving agents. Journal of Photochemistry and Photobiology B: Biology, 115, 25-34 (2012)




38. Mohammed Ikbal, Rakesh Banerjee, Dibakar Dhara, Anakuthil Anoop, N. D. Pradeep Singh."Development of 1-Hydroxy-2(1H)-quinolone based photoacid generators and photoresponsive polymer surfaces"Chemistry - A European Journal 18(38), 11968,11 (2012)




37. Nilanjana Chowdhury, Swagata Dasgupta, N.D. Pradeep Singh. Photoinduced DNA cleavage by anthracene based hydroxamic acids. Bioorganic & Medicinal Chemistry Letters,22 (14), 4668-4671 (2012)



36.Avijit Jana, K. Sanjana P. Devi, Tapas K. Maiti, and N. D. Pradeep Singh. Perylene-3-ylmethanol: Fluorescent Organic Nanoparticles as a Single-Component Photoresponsive Nanocarrier with Real-Time Monitoring of Anticancer Drug Release. J.Am.Chem.Soc. 2012, 134 (18), 7656-7659





35. Nilanjana Chowdhury, Anakuthil Anoop, N. D.Pradeep Singh.O-alkyl-N-acyl-N-phenylhydroxylamines as photochemical alkoxy radical precursors. SYNTHESIS 2012,44,000A—000J.


34. Nilanjana Chowdhury, Sansa Dutta, Swagatha dasgupta, Mithu baidya, S.K. Ghosh, N. D. Pradeep Singh. Synthesis, photophysical, photochemical, DNA cleavage/binding and cytotoxic properties of pyrene oxime ester conjugatePhotochem. Photobiol. Sci.2012.




33. Sangamithra Atta, Mohammed Ikbal, Ashutosh Kumar, N. D. Pradeep Singh.Application of photoremovable protecting group for controlled release of plant growth regulators by sunlight, Journal of Photochemistry and Photobiology B: Biology,111,2012,39-49


32. Avijit Jana, Mohammed Ikbal,N. D. Pradeep Singh- Perylen-3-ylmethyl: fluorescent photoremovable protecting group (FPRPG) for carboxylic acids and alcohols. Tetrahedron,68,2012,1128-1136.





31. Mohammed Ikbal, Avijit Jana,N.D.Pradeep Singh, Rakesh Banerjee, Dibakar DharaPhotoacid generators (PAGs) based on N-acyl-N-phenylhydroxylamines for carboxylic and sulfonic acids. Tetrahedron,67,20,2011,3733-3742







30. Jana, A.; Atta, S.; Sarkar, S. K.; Singh, Pradeep N. D. 1-acetylpyrene with dual functions as an environment-sensitive fluorophore and fluorescent photoremovable protecting group. Tetrahedron 66,52,2010,9798-9807.





29.Atta, S.; Jana, A.; Rajakumar, A.; Singh, Pradeep N. D. Fluorescent Caged Compounds of 2,4-Dichlorophenoxyacetic Acid (2,4-D): Photorelease Technology for Controlled Release of 2,4-D. J. Agric. Food Chem 2010 (ASAP).

28.Gazi, S.; Rajakumar, A.; Singh, Pradeep N.D. Photodegradation of organic dyes in the presence of [Fe(III)-salen]Cl complex and H2O2 under visible light irradiation. Journal of Hazardous Materials 2010,183,894-901

27.Chowdhury, N.; Dutta, S.; Nishitha, B.; Dasgupta, S.; Singh, Pradeep N. D. N,O-Diacyl-4-benzoyl-N-phenylhydroxylamines as photoinduced DNAcleaving agents. Bioorganic & Medicinal Chemistry Letters 2010,20,5414-5417.


26. Sengupta, J.; Jana, A.; Singh, Pradeep N. D.; Mitra, C.; Jacob, C. Site-selective synthesis of in situ Ni-filled multi-walled carbon nanotubes using Ni(salen) as a catalyst source. Nanotechnology 2010,21,415605


25. Sengupta, J.; Jana, A.; Singh, Pradeep N.D.; Jacob, C. Effect of growth temperature on the CVD grown Fe filled multi-walled carbon nanotubes using a modified photoresist. Materials Research Bulletin 2010, 45, 1189-1193.


24. Sengupta, J.; Jana, A.; Singh, Pradeep N.D.; Jacob, C. Lithographically defined site-selective growth of Fe filled multi-walled carbon nanotubes using a modified photoresist. Carbon 2010, 48, 2361-2380




23. Mecomber, J. S.; Murthy, R. S.; Rajam, S.; Singh, Pradeep. N. D.; Gudmundsdottir, A. D.; Limbach, P. A. C. "Photochemical Functionalization of Polymer Surfaces for Microfabricated Devices".. Langmuir.,2008,24(7),3645-3653.




22.Singh,Pradeep.N.D.; Mandel,S. M.;Sankaranarayanan,J.; Muthukrishnan,S.;Chang,M.;Robinson,R.M.;Lahti,P. M.; Ault,B.S.;Gudmundsdóttir,A.D. Selective Formation of Triplet Alkyl Nitrenes from Photolysis of ß-Azido-Propiophenone and Their Reactivity. J. Am. Chem. Soc., 2007, 129(51),16263-16272


21.Xiaojun Han.; Singh N.D.Pradeep.; Kevin Critchley.; Khizar Sheikh.; Richard J.Bushby.;Stephen D.Evans. Supported Bilayer Lipid Membrane Arrays on Photopatterned Self-Assembled Monolayers. Chem. Eur. J., 2007, 13, 7957- 7964.

20.Xiaojun Han.; Kevin Critchley.; Lixin Zhang.; Singh N.D. Pradeep.; Richard J.Bushby.; Stephen D. Evans. A novel method to fabricate tethered bilayer lipid membrane on patterned SAMs substrate. Langmuir. 2007, 23(3), 1354-1358.






19. Klima, R. F.; Jadhav, A. V.; Singh, Pradeep. N. D.; Chang, M.; Vanos, C.;Sankaranarayanan, J.; Vu,M.; Ibrahim,N.;Ross,E.; McCloskey,S.; Murthy, R.S.; Krause,J. A.; Ault,B. S.;Gudmundsdottir,A. D. Photoinduced C-N Bond Cleavage in 2-Azido-1,3-diphenyl-propan-1-one Derivatives: Photorelease of Hydrazoic Acid. J. Org. Chem., 2007, 72(17), 6372-6381.




18. Muthukrishnan,S.;Mandel,S.M.;Hackett,J.C.; Singh,Pradeep.N.D.; Hadad,C.M.; Krause, J.A.; Gudmundsdottir, A. D. Competition between a-Cleavage and Energy Transfer in a-Azidoacetophenones. J. Org. Chem., 2007, 72(8), 2757-2768





17. Mandel, S. M.; Singh, Pradeep. N. D.; Muthukrishnan, S.; Chang, M.; Krause, J. A.; Gudmundsdottir, A. D. Solid-State Photolysis of a-Azidoacetophenones”. Org. Lett., 2006, 8(19), 4207-4210.




16. Singh, Pradeep N. D.; Klima, Rodney F.; Muthukrishnan, Sivaramakrishnan; Murthy, Rajesh S.; Sankaranarayanan, Jagadis; Stahlecker, Heidi M.; Patel, Bhavika; Gudmundsdottir, Anna D. An efficient one-pot synthesis of pyrrolines and tetrahydropyridines from their chloro-precursors via in situ aza-Wittig reaction. Tetrahedron Lett., 2005, 46(24), 4213-4217.




15. Singh, Pradeep N. D.; Pika, Jana; Krause Bauer, Jeanette A.; Gudmundsdottir, Anna D. 3'-Isopropyl-8',8'-dimethyl-2-benzofuran-1-spiro-7'-bicyclo[4.2.0]octa-1'(6'),2',4'-trien-3-one. Acta Crystallographica, Section E: Structure Reports Online. 2004, 12, 2390-2392.




14.Singh, Pradeep. N. D.; Mandel, S. M.; Zhu, Z.; Franz, R.; Ault, B. S.; Gudmundsdottir, A. D. Photolysis of a-Azidoacetophenones: Direct Detection of Triplet Alkyl Nitrenes in Solution. J. Org. Chem., 2003, 68 (21), 7951-7960.



13. Pika, J.; Konosonoks, A.; Singh, Pradeep. N. D.; Gudmundsdottir, A. D. Designing Esters Which Release Alcohols Upon Exposure To Light. The Spectrum. 2003, 16(4), 12- 17.


12. Singh, Pradeep. N. D.;  Muthukrishnan, S.; Murthy, R. S.; Klima, R. F.; Mandel, S. M.; Hawk, M.; Yarbrough, N.; Gudmundsdóttir. A. D. A Simple and Fast Procedure for Efficient Synthesis of ß-and ?-Azidoarylketones. Tetrahedron Lett., 2003, 44, 9169-9171


11. Singh, Pradeep. N. D.; Carter, C. L.; Gudmundsdóttir, A. D. A Simple Green Procedure for the Synthesis of 2H-Azirines. Tetrahedron Lett., 2003, 44 (35), 6763-6765.


10. Pika, J.; Konosonoks, A.; Robinson, R. M.; Singh, Pradeep. N. D.; Gudmundsdottir, A. D. "Photoenolization as a Means to Release Alcohols". J. Org. Chem., 2003, 68(5), 1964-1972.





9. Gopalakrishnan, G.; Kasinath, V.; Pradeep Singh, N. D. Microwave-Assisted Ketone-Ketone Rearrangement: An Improved Synthesis of 3-(4-Alkoxyphenyl)-3- methylbutan-2-ones. Org. Lett., 2002,4(5),781-782


8. Geetha Gopalakrishnan.; N. D. Pradeep Singh.; V. Kasinath. Photooxygenation of Nimonol, a Tetranortriterpenoid from Azadirachta indica. A. Juss.Molecules. 2002, 7, 112-118.


7. Geetha Gopalakrishnan.; Viswanathan Kasinath.; N.D.Pradeep Singh.;V.P.Santhana Krishnan.; K.Anand Solomon.; S.S.Rajan. Microwave Assisted Regioselective Bromomethoxylation of Alkenes Using Polymer Supported Bromine Resins. Molecules. 2002, 7, 412-419.


6. Suresh, G.; Gopalakrishnan, G.; Wesley, S. D.; Pradeep Singh, N. D.; Malathi, R.; Rajan, S. S.. "Insect Antifeedant Activity of Tetranortriterpenoids from the Rutales. A Perusal of Structural Relations". J. Agric. Food Chem., 2002, 50(16), 4484-4490.




5. Gopalakrishnan, G.; Pradeep Singh, N. D.; Kasinath, V.; Siva Rama Krishnan, M.; Malathi, R.; Rajan, S. S. Microwave- and ultrasound-assisted oxidation of bio-active limonoids. Tetrahedron Lett., 2001, 42(37), 6577-6579


4. Geetha Gopalakrishnan.; Pradeep Singh, N.D.; Kasinath,V. Photomediated oxidation of Salannin,a Tetranortriterpenoid from Azadiracta indica A.Juss”. Molecules. 2001, 6, 551-556




3. Geetha Gopalakrishnan.; Pradeep Singh, N.D.; Kasinath, V.; Malathi, R.; Rajan, S.S. Photooxidation of cedrelone, a tetranortriterpenoid from Toona ciliate. Photochem. Photobio., 2000, 4, 464-466.


2. Geetha Gopalakrishnan.; Kasinath, V.; Pradeep Singh, N. D.; Thirumurugan, R.; Shanmuga Sundara Raj, S.; Shanmugam, G. A new synthetic route to dihydrobbenzopyran via Tandem demethylation cyclisation.Molecules. 2000, 5, 880-885.




1. Govindachari, T.R.; Geetha Gopalakrishnan.; Malathi, R.; Pradeep Singh, N.D. Natural Product Lett., 1999, 13(3), 157-159.


Technology Transfer

Geetha Gopalakrishnan, Pradeep Singh, N.D. A process for neem formulation with stable active ingredient - the terpenoid Azadirachtin was developed using novel, cost-effective and natural-based ultraviolet stabilizer.