申请人:Kuraray Co., Ltd.
公开号:US05894073A1
公开(公告)日:1999-04-13
According to the present invention, provided are (1) a process for the preparation of 2-chloro-5-chloromethyl-1,3-thiazole, by reacting 3-chloro-1-isothiocyanato-1-propene with a chlorinating agent, (2) a process for the preparation of 3-chloro-1-isocyanato-1-propene, by rearranging 3-chloro-1-thiocyanato-2-propene in the presence of a salt of one or more than one metal selected from the group consisting of metals belonging to Group 2A, Group 7A, Group 8 and Group 1B of the long-form periodic table, and (3) a process for the preparation of 3-chloro-1-thiocyanato-2-propene, by reacting 1,3-dichloropropene and a thiocyanate salt (a) in the presence of water, (b) in the presence of an organic solvent which is water-soluble and has a boiling point of 150.degree. C. or lower, or (c) in an organic solvent in the presence of a phase transfer catalyst.
根据本发明,提供了以下内容:(1) 通过将3-氯-1-异硫氰酸丙烯与氯化剂反应来制备2-氯-5-氯甲基-1,3-噻唑的方法,(2) 通过在一种或多种来自长周期表中属于2A组、7A组、8组和1B组金属的盐的存在下重排3-氯-1-硫氰酸酯-2-丙烯来制备3-氯-1-异氰酸酯-1-丙烯的方法,(3) 通过在水的存在下、在具有沸点为150摄氏度或更低的水溶性有机溶剂的存在下,或者在有机溶剂中存在相转移催化剂的情况下,将1,3-二氯丙烯和硫氰酸盐反应来制备3-氯-1-硫氰酸酯-2-丙烯的方法。