Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Pradeep N. D. Singh"'
Autor:
Xin Yi Oh, Tuan Minh Nguyen, Enyi Ye, He-Kuan Luo, Pradeep N. D. Singh, Xian Jun Loh, Vinh Xuan Truong
Publikováno v:
ACS Macro Letters. :690-696
Autor:
Abhijit V. Jadhav, Ahleah Rohr, Bruce S. Ault, Sujan K. Sarkar, Anna D. Gudmundsdottir, Cornelia Bohne, Sridhar Rajam, Jeanette A. Krause, Tamara C. S. Pace, Pradeep N. D. Singh, Rui Li, Qian Li
Publikováno v:
The Journal of Organic Chemistry. 79:9325-9334
Photolysis of vinylazide 1, which has a built-in acetophenone triplet sensitizer, in argon-saturated toluene results in azirine 2, whereas irradiation in oxygen-saturated toluene yields cyanide derivatives 3 and 4. Laser flash photolysis of azide 1 i
Autor:
Sivaramakrishnan Muthukrishnan, Paul M. Lahti, Bruce S. Ault, Mingxin Chang, Anna D. Gudmundsdottir, Sarah M. Mandel, Pradeep N. D. Singh, Jagadis Sankaranarayanan, Rachel M. Robinson
Publikováno v:
Journal of the American Chemical Society. 129:16263-16272
Photolysis of beta-azido propiophenone derivatives, 1, with built-in sensitizer units, leads to selective formation of triplet alkyl nitrenes 2 that were detected directly with laser flash photolysis (lambdamax = 325 nm, tau = 27 ms) and ESR spectros
Autor:
Anna D. Gudmundsdottir, Jeanette A. Krause, Shaun Mccloskey, Abhijit V. Jadhav, Rodney F. Klima, Christine Vanos, Bruce S. Ault, Mingxin Chang, Jagadis Sankaranarayanan, Elaine Ross, Rajesh S. Murthy, Mai Vu, Pradeep N. D. Singh, Nazarin Ibrahim
Publikováno v:
The Journal of Organic Chemistry. 72:6372-6381
Photolysis of 3-azido-1,3-diphenyl-propan-1-one (1a) in toluene yields 1,3-diphenyl-propen-1-one (2), whereas irradiation of 3-azido-2,2-dimethyl-1,3-diphenyl-propan-1-one (1b) results in the formation of mainly 2,2-dimethyl-1,3-diphenyl-propan-1-one
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 60:o2390-o2392
Photolysis of a 2-(2-isopropyl-benzoyl)benzoate ester derivative in an oxygen-free environment results in the liberation of the alcohol from the ester and formation of the title spirolactone, C20H20O2. The molecule of the title compound ado
Autor:
Rodney F. Klima, Sivaramakrishnan Muthukrishnan, Michael Hawk, Anna D. Gudmundsdottir, Pradeep N. D. Singh, Rajesh S. Murthy, Sarah M. Mandel, Nina Yarbrough
Publikováno v:
Tetrahedron Letters. 44:9169-9171
A simple and efficient method for preparing β- and γ-azido substituted arylketones has been achieved by short microwave irradiation of the corresponding halo arylketones and sodium azide in DMSO.
Publikováno v:
Tetrahedron Letters. 44:6763-6765
An efficient and environmentally friendly method preparing 2H-azirines in good yield has been achieved by microwave irradiation of vinyl azides in solvent free conditions.
Autor:
Justin S. Mecomber, Sridhar Rajam, Rajesh S. Murthy, Pradeep N. D. Singh, Anna D. Gudmundsdottir, Patrick A. Limbach
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 24(7)
Herein we report the topochemical modification of polymer surfaces with perfluorinated aromatic azides. The aryl azides, which have quaternary amine or aldehyde functional groups, were linked to the surface of the polymer by UV irradiation. The polym
Autor:
John C. Hackett, Sivaramakrishnan Muthukrishnan, Christopher M. Hadad, Anna D. Gudmundsdottir, Jeanette A. Krause, Pradeep N D Singh, Sarah M. Mandel
Publikováno v:
The Journal of organic chemistry. 72(8)
Molecular modeling demonstrates that the first excited state of the triplet ketone (T1K) in azide 1b has a (pi,pi*) configuration with an energy that is 66 kcal/mol above its ground state and its second excited state (T2K) is 10 kcal/mol higher in en
Autor:
Sarah M. Mandel, Sivaramakrishnan Muthukrishnan, Anna D. Gudmundsdottir, Jeanette A. Krause, Pradeep N. D. Singh, Mingxin Chang
Publikováno v:
Organic letters. 8(19)
Solid-state photolysis of 1 yields 2 in a crystal-to-crystal reaction. The reaction takes place by alpha-cleavage to form a benzoyl and an azido alkyl radical pair. The azido alkyl radicals rearrange into iminyl radicals and N2. The iminyl and benzoy