This invention relates to a process for producing an amide compound by Beckmann rearrangement of an oxime compound using a compound having at least two electron-withdrawing leaving groups as a rearrangement catalyst, the process comprising a pre-preparation step in which the rearrangement catalyst and at least a part of the oxime compound are mixed and reacted; and a rearrangement reaction step in which the oxime compound is rearranged at a temperature higher than that in the pre-preparation step.
METHOD FOR PREPARING LACTAMES, COMPRISING A PHOTONITROSATION STEP, FOLLOWED BY A BECKMANN TRANSPOSITION STEP
申请人:Aubert Thierry
公开号:US20110137027A1
公开(公告)日:2011-06-09
The invention relates to a method for preparing lactames, according to which a photonitrosation of a cycloallcane is carried out using nitrosyl chloride (NOCI). According to the invention, said photonitrosation is carried out by means of LEDs emitting a monochromatic light. The method according to the invention can also include a step comprising Beckmann transposition/dechlorination of the oxime hydrochloride generated during said phonitrosation, preferably carried out in a glass microreactor.