Process for the production of 1-lower alkoxy-1-lower...

Details Process for the production of 1-lower alkoxy-1-lower... Process for the production of 1-lower alkoxy-1-lower...

C - Chemistry, Metallurgy

07

D

260/358, 260/356

C07D 311/16 (2006.01) C07D 311/20 (2006.01)

Patent

CA 2032657

-25 - Abstract of the Disclosure A 1-lower alkoxy-1-lower alkyl-3-[4- (2-lower alkoxy-2,3-dihydro-7-benzopyranyloxy)phenyl]- urea is prepared by a process which comprises alkylating a novel 1-hydroxy-3-[4-(2-lower alkoxy-2,3- dihydro-7-benzopyranyloxy)phenyl]urea with a corresponding alkylating agent selected from the group consisting of a sulfuric acid ester and an alkyl halide in the presence of a basic compound. The 1-lower alkoxy-1-lower alkyl-3-[4-(2-lower alkoxy-2,3-dihydro- 7-benzopyranyloxy)phenyl]urea has a herbicidal activity. New intermediates and processes for production thereof are also disclosed.

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