申请人:Rohm and Haas Company
公开号:US05922916A1
公开(公告)日:1999-07-13
The present invention relates to a process for preparing 5-methylene cyclic carbamates either by cyclization of an alkynyl amine with carbon dioxide in the presence of a copper catalyst or by forming an isocyanate from a substituted acetoacetamide followed by hydrolysis. The 5-methylene cyclic carbamates by either method are converted to 5-(chloromethylene) cyclic carbamates, using trichloroisocyanuric acid, followed by hydrolysis to a chloroketoamine. The chloroketoamine from the process of this invention additionally can be reacted with an organic acid chloride to form an amide compound which is useful as a fungicide.
本发明涉及一种制备5-亚甲基环状
氨基甲酸酯的方法,其通过在
铜催化剂存在下,将炔基胺与
二氧化碳环化,或通过从取代
乙酰丙酮酰胺中形成
异氰酸酯,然后
水解而得。通过任一方法制备的5-亚甲基环状
氨基甲酸酯,可使用三
氯异氰酸酯转化为5-(
氯亚甲基)环状
氨基甲酸酯,然后
水解为
氯酮胺。本发明方法中的
氯酮胺还可以与有机酸
氯反应形成酰胺化合物,该化合物可用作杀菌剂。