An Efficient Highly Regioselective Synthesis of 2,3,4-Trisubstituted Pyrroles by Cycloaddition of Polarized Ketene <i>S</i>,<i>S-</i> and <i>N</i>,<i>S-</i>Acetals with Activated Methylene Isocyanides
作者:N. C. Misra、K. Panda、H. Ila、H. Junjappa
DOI:10.1021/jo062139j
日期:2007.2.1
An efficient route for regioselective synthesis of 2,3,4- substituted pyrroles allowing precise control over the introduction of a number of substituents and functionalities (tosyl, carbalkoxy, aryl, cyano, nitro, acetyl, benzoyl, cyclic amines, etc.) at the three positions of the pyrrole ring has been developed via 1,3-dipolar cycloaddition of readily accessible polarized ketene S,S- and N,S-acetals
Ashare, Ram; Roy, Jalpana; Mukerjee, Arya K., Heterocycles, 1986, vol. 24, # 5, p. 1325 - 1329
作者:Ashare, Ram、Roy, Jalpana、Mukerjee, Arya K.
DOI:——
日期:——
4-Bis(methylthio)methylene-2-phenyloxazol-5-one: Versatile Template for Synthesis of 2-Phenyl-4,5-functionalized Oxazoles
作者:Nimesh C. Misra、H. Ila
DOI:10.1021/jo100941f
日期:2010.8.6
4-Bis(methylthio)methylene-2-phenyloxazol-5-one has been shown to be a versatile template for the synthesis of various 2-phenyl-3,4-substituted oxazoles via nucleophilic ring-opening of oxazolone with various oxygen, nitrogen, and carbon nucleophiles and subsequent 5-endo cyclization of the resulting acyclic adducts in the presence of silver carbonate.
Roy, Jalpana, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 4, p. 433 - 434
作者:Roy, Jalpana
DOI:——
日期:——
Tripathy, Pradeep K.; Roy, Jalpana; Mukerjee, Arya K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1986, vol. 25, p. 1275 - 1276
作者:Tripathy, Pradeep K.、Roy, Jalpana、Mukerjee, Arya K.