申请人:ROHM AND HAAS COMPANY
公开号:EP0872473A3
公开(公告)日:2002-01-02
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,然后进行水解。通过任一方法制备的5-亚甲基环状氨基甲酸酯,可以使用三氯异氰尿酸将其转化为5-(氯亚甲基)环状氨基甲酸酯,然后通过水解反应制备氯酮胺。本发明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。