PREPARATION METHOD FOR AND INTERMEDIATE OF PYRROLO SIX-MEMBERED HETEROAROMATIC RING DERIVATIVE
申请人:Jiangsu Hengrui Medicine Co., Ltd.
公开号:US20190308972A1
公开(公告)日:2019-10-10
Disclosed are an intermediate of a pyrrolo six-membered heteroaromatic ring derivative as a JAK inhibitor and a preparation method therefor, and a method for preparing a pyrrolo six-membered heteroaromatic ring derivative using the intermediate. The method improves the reaction yield, is simple and easy to operate and control, and is conducive to expanded industrial production.
A simple and efficient one‐pot synthesis of alkyl 2‐(alkyl)‐4‐methyl‐2‐thioxo‐2,3‐dihydrothiazole‐5‐carboxylates from the reaction of primary alkylamines and carbon disulfide in the presence of 2‐chloro‐1,3‐dicarbonyl compounds is described. This new protocol has several advantages such as lack of necessity of the catalyst, good yields, mild conditions and short times for reaction.
Preparation method for and intermediate of pyrrolo six-membered heteroaromatic ring derivative
申请人:Jiangsu Hengrui Medicine Co., Ltd.
公开号:US10851100B2
公开(公告)日:2020-12-01
Disclosed are an intermediate of a pyrrolo six-membered heteroaromatic ring derivative as a JAK inhibitor and a preparation method therefor, and a method for preparing a pyrrolo six-membered heteroaromatic ring derivative using the intermediate. The method improves the reaction yield, is simple and easy to operate and control, and is conducive to expanded industrial production.
本发明公开了一种作为 JAK 抑制剂的吡咯六元杂芳环衍生物的中间体及其制备方法,以及使用该中间体制备吡咯六元杂芳环衍生物的方法。该方法提高了反应产率,操作简单,易于控制,有利于扩大工业化生产。