申请人:——
公开号:US20020032329A1
公开(公告)日:2002-03-14
Among its several embodiments, the present invention provides an improved process for the preparation of tetrahydrobenzothiepine-1,1-dioxide compounds; the provision of a process for preparing a diastereomeric mixture of tetrahydrobenzothiepine-1,1-dioxide compounds from a single diastereomer of such compounds; the provision of a process for the preparation of 3-bromo-2-substituted propionaldehyde compounds; and the provision of a process for the preparation of 3-thio-2-substituted propionaldehyde compounds.
在其几种具体实施方式中,本发明提供了一种改进的制备四氢苯并噻吩-1,1-二氧化物化合物的过程;提供了一种从单个对映异构体化合物的对映异构体混合物中制备四氢苯并噻吩-1,1-二氧化物化合物的过程;提供了一种制备3-溴-2-取代丙醛化合物的过程;以及提供了一种制备3-硫代-2-取代丙醛化合物的过程。