An unexpected involvement of ethyl-2-cyano-2-(hydroxyimino) acetate cleaved product in the promotion of the synthesis of nitriles from aldoximes: a mechanistic perception
摘要:
While attempting to synthesize nitriles from aldoximes using O-sulfonate esters of oxyma [ethyl 2-cyano-2-(hydroxyimino)acetate], an unexpected involvement of oxyma cleaved product in promoting the synthesis of nitriles was observed. Such involvement of the oxyma cleaved product in the reaction mechanism, together with the usual anticipated pathway improved drastically the applicability of the method by reducing the time needed for the reaction to be completed over that of the sulfonyl chlorides. Other advantages of the present protocol are excellent yields in ambient and milder conditions. (C) 2013 Elsevier Ltd. All rights reserved.
A new synthetic method of imidoyliodides has been devised which involves the Beckmann rearrangement of oxime derivatives with trimethylsilyl iodide or diethylaluminum iodide. This allows a one-pot procedure for a α-arylation of amines in synthetically useful yields.