Abstract: 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.
Type:
Grant
Filed:
April 13, 1998
Date of Patent:
July 13, 1999
Assignee:
Rohm and Haas Company
Inventors:
Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens, Joshua Anthony Chong, Fereydon Abdesaken, Charles Chao Wu