反应详情

To 30 parts of methanol saturated with hydrogen chloride gas (concentration of hydrogen chloride: about 50%) was added 41.8 parts of 3,3-dimethyl-4-(2',2'-dichlorovinyl)-4-butanolide, followed by heating in a closed tubular reactor at 70°-80° C. for 3 hours. The reaction mixture was then treated in the same manner as Example 1. By the above procedure was obtained 49.8 parts of methyl 3,3-dimethyl-4,6,6-trichloro-5-hexenoate (yield 96%). This product was found to have properties identical with those of the product according to Example 1.

1. temperatureby heating in a closed tubular reactor at 70°-80° C. for 3 hours
2. additionThe reaction mixture was then treated in the same manner as Example 1