Citation: Jun An MA, Run Qiu HUANG, Jun Ran CHENG, Rui Lian SHAO, Zai Guo LI. Efficient Isomerization for Preparing thans-2,2-Dimethyl-3-(2,2-dichloroethenyl) cyclopropanecarbonyl Chloride[J]. Chinese Chemical Letters, ;1999, 10(2): 101-102. shu

Efficient Isomerization for Preparing thans-2,2-Dimethyl-3-(2,2-dichloroethenyl) cyclopropanecarbonyl Chloride

Institute and State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071

Received Date: 4 September 1998

Fund Project: We would like to acknowledge the National Natural Science Foundation of' China for financial support. We would also like to thank Professor Guang Ren Li for many helpful discussions and Dr. Jia Zhou for encouragement and advice.

Traps-2,2-dimethyl-3一(2,2-dichloroethenyl) cyclopropanecarbonyl chloride, which is an important intermediate for insecticides, is obtained by isomerization of the cis/traps-mixture with 4- (N,N-dimethylamino) pyridine (DMAP) in the presence or absence of halogen compounds in good yield.
- Permethric acid chloride,
- dimethylaminopyridine,
- conversion
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