A metal catalyst free approach for regioselective ortho-chlorination of anilines has been developed using a secondary amine as the organocatalyst and sulfuryl chloride as the halogen source under mild conditions. A wide range of substrates were compatible with this catalytic system. In addition, this catalytic protocol has been applied to the efficient synthesis of bioactive compounds and modification
Reactions of 2-acylthiazolium salts with N-arylhydroxylamines
作者:Luísa M Ferreira、Ana M Lobo、Sundaresan Prabhakar、Antonieta C Teixeira
DOI:10.1016/s0040-4020(98)01161-2
日期:1999.3
2-Acylthiazolium salts, easily obtained by alkylation of the corresponding 2-acylthiazoles with methyl triflate, react with N-arylhydroxylamines to furnish the O-acyl derivatives of relevance in the induction of cancer by aromatic amines. (C) 1999 Elsevier Science Ltd. All rights reserved.