申请人:CAMPOS KEVIN R.
公开号:US20100041893A1
公开(公告)日:2010-02-18
The present invention is directed to a practical process for the preparation of an enamide (II) by palladium catalyzed coupling of a primary amide (IV) with a compound of structural formula (III), as shown below: As well as to crystalline forms of a compound produced by this process, in particular, an anhydrous crystal form, Form B, and crystalline solvates falling into three patterns, Type 1, Type 2, and Type 3, and crystalline intermediate compounds produced in the process. Still further, the present invention relates to the stereoselective reduction of the tetrasubstituted enamide (II) to the corresponding amide (I).
本发明涉及一种实用的过程,通过钯催化偶联式反应将一种一级酰胺(IV)与一种结构式为(III)的化合物耦合制备出烯酰胺(II),如下所示:此外,本发明还涉及通过该过程制备出的化合物的晶体形式,特别是无水晶体形式B和落入三种模式(类型1、类型2和类型3)的晶体溶剂,以及在该过程中产生的晶体中间体化合物。此外,本发明还涉及四取代烯酰胺(II)的立体选择性还原为相应的酰胺(I)。