Reaction of araldoximes with 4 equiv of chloramine-T in refluxing methanol produces N-(p-tolyl)-N-(p-tosyl)benzamides via addition of 2 equiv of chloramine-T to the intermediate nitrile oxide followed by extrusion of sulfur dioxide.
TANNER, DAVID;SOMFAI, PETER, TETRAHEDRON, 44,(1988) N 2, 613-618
作者:TANNER, DAVID、SOMFAI, PETER
DOI:——
日期:——
A mild and efficient method for the preparation of n-tosyl amides and lactams
作者:David Tanner、Peter Somfai
DOI:10.1016/s0040-4020(01)85848-8
日期:1988.1
N-tosyl amides and lactams can be prepared easily and under mild conditions by the inter- or intramolecular condensation of carboxylic acids and secondary sulfonamides. The coupling reagent used is dicyclohexyl-carbodiimide (DCC) in the presence of 4-pyrrolidinopyridine (4-PPY) and the reactions proceed readily, usually in high yield, at room temperature.