[EN] EFFICIENT AND COST-EFFECTIVE PROCESS FOR THE MANUFACTURE OF AMYL M-CRESOL<br/>[FR] PROCÉDÉ EFFICACE ET RENTABLE POUR LA FABRICATION D'AMYL-M-CRÉSOL
申请人:AESICA PHARMACEUTICALS LTD
公开号:WO2012017204A1
公开(公告)日:2012-02-09
There is described a process for the preparation of amyl-m-cresol (AMC) which comprises the steps of; (i) reaction of m-cresol with valeric acid, or a derivative thereof, (to form m- cresol valerate (3-toluoyl valerate)); (ii) rearrangement, optionally in situ, of 3-toluoyl valerate in the presence of an oxoacid, provided that the oxoacid is not a carboxylic acid or nitric acid; and (iii) reduction of valeryl m-cresol (VMC), e.g. using a palladium on charcoal catalyst and hydrogen.
描述了一种制备戊基间甲酚(AMC)的过程,包括以下步骤:(i) 将间甲酚与戊酸或其衍生物反应(形成间甲酚戊酸酯(3-对甲苯酰戊酸酯));(ii) 在存在氧酸的情况下,对3-对甲苯酰戊酸酯进行重新排列,可选地原位进行,前提是氧酸不是羧酸或硝酸;(iii) 还原戊酰间甲酚(VMC),例如使用钯在活性炭催化剂和氢气。