申请人:Jingbo Agrochemicals Technology Co., Ltd
公开号:EP3804853A1
公开(公告)日:2021-04-14
A catalyst and a method for preparing S-indoxacarb using the catalyst. The catalyst is prepared using 3-tert-butyl-5-(chloromethyl)salicylaldehyde and cyclohexanediamine as raw materials, where an original quinine catalyst such as cinchonine is replaced with the catalyst for application in the asymmetric synthesis of tert-butyl hydroperoxide and 5-chloro-2-methoxycarbonyl-1-indanone ester, greatly improving selection in the asymmetric synthesis process, with the S-enantiomer content increasing from 75% to over 98%, achieving the recycling of a high-efficiency chiral catalyst, and greatly reducing production costs. The synthesis process of the catalyst is simple and is favorable for industrialization, and lays good foundations for the production of high-quality indoxacarb.
一种催化剂和使用该催化剂制备 S-吲哚草酰脲的方法。该催化剂以 3-叔丁基-5-(氯甲基)水杨醛和环己烷二胺为原料制备,用该催化剂替代原有的奎宁催化剂如辛可宁,应用于叔丁基过氧化氢和 5-氯-2-甲氧羰基-1-茚酮酯的不对称合成、大大提高了不对称合成过程中的选择性,S-对映体含量从 75% 提高到 98% 以上,实现了高效手性催化剂的循环利用,大大降低了生产成本。该催化剂合成工艺简单,有利于工业化生产,为生产高品质的茚草克打下了良好的基础。