Water → 2(3H)-Furanone, 5-(2,2-dichloroethenyl)dihydro-4,4-dimethyl-

Participants

Reaction Steps

To a mixed solution of 6.0 parts of sodium hydroxide, 40 parts of water and 60 parts of methanol was added dropwise under reflux 26.0 parts of methyl 3,3-dimethyl-4,6,6-trichloro-5-hexenoate and, after the dropwise addition had been completed, the mixture was further stirred under reflux for 2 hours. The reaction mixture was then treated in the same manner as Reference Example 1 to obtain 19.5 parts of 3,3-dimethyl-4-(2',2'-dichlorovinyl)-4-butanolide (yield 93%).

Provenance & Evidence