Patent ID: 6864397
Filing Date: 2005-03-08
Classification: C09K

Abstract:
1. A process for producing a difluoromethyl ether derivative represented by Formula (1d′): wherein R 1 and R 2 each independently represent hydrogen, halogen, a cyano group or an alkyl group having 1 to 20 carbon atoms, in which at least one —CH 2 — may be substituted with —O—, —S—, —CH═CH— or —C≡C— but —O— is not adjacent to another —O—, and in which any hydrogen may be substituted with fluorine; rings A Z Y k, l, m and n each independently represent 0 or 1; and o represents an integer of 1-10; which comprises using an 1,1-difluorovinyl derivative represented by Formula (1a′): wherein R 1 , rings A 1 , A 2 and A 5 , Z 1 , Z 2 , k, l and o have the same meanings as defined above; as a starting material.