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.
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在其多种实施方式中,本发明提供了一种改进的四氢苯并
硫杓-1,1-二氧化物化合物制备方法;提供了一种从单一对映异构体的四氢苯并
硫杓-1,1-二氧化物化合物制备对映异构体混合物的方法;提供了一种3-溴-2-取代
丙醛化合物的制备方法;以及提供了一种3-
硫-2-取代
丙醛化合物的制备方法。