Facile N-formylation of amines using Lewis acids as novel catalysts
摘要:
Alky, aryl, and heteroaryl amines were found to react efficiently with formic acid under Lewis acid catalysis giving N-formyl derivatives in high yields. A study of ZnCl2-catalyzed N-formylation of a variety of amines using formic acid as formylating agent is described. (C) 2009 Elsevier Ltd. All rights reserved.
Facile N-formylation of amines using Lewis acids as novel catalysts
作者:A. Chandra Shekhar、A. Ravi Kumar、G. Sathaiah、V. Luke Paul、Madabhushi Sridhar、P. Shanthan Rao
DOI:10.1016/j.tetlet.2009.10.006
日期:2009.12
Alky, aryl, and heteroaryl amines were found to react efficiently with formic acid under Lewis acid catalysis giving N-formyl derivatives in high yields. A study of ZnCl2-catalyzed N-formylation of a variety of amines using formic acid as formylating agent is described. (C) 2009 Elsevier Ltd. All rights reserved.
A short synthesis of 3,6-disubstituted N-2-thienyl/aryl-indoles
作者:Hanumant B. Borate、Sangmeshwer P. Sawargave、Suleman R. Maujan
DOI:10.1016/j.tetlet.2009.09.049
日期:2009.11
A short synthetic strategy for 3,6-disubstituted-N-2-thienyl/aryl-indoles, involving reaction of substituted 2,4-difluoro/dichloro-styrene epoxide with substituted 2-formylaminothiophenes or substituted N-formylanilines in the presence of a base followed by treatment with an acid, has been developed. The method was applied for the synthesis of a number of indoles with a variety of substituents at 1