| 摘要 |
PROBLEM TO BE SOLVED: To provide a most important intermediate for producing cyclopropane carboxylate esters which are insecticidal compounds known as pyrethroids, and equipped with a very good insecticidal characteristic and an extremely low toxicity to mammalian animals. SOLUTION: This (1R,5S)-4-(1,1-dichloro-2,2,2-trifluoroethyl)-6,6-dimethyl-3- oxabicyclo[3.1.0]hexane-2-one is produced as the intermediate in producing the insecticidally active cyclopropane carboxylate esters.
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