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。