Title: Synthesis of Alpha-diazoate and multi-substituent cyclopropane carboxylate
Application Number: 95113948 Application Date: 1995.11.30
Publication Number: 1151985 Publication Date: 1997.06.18
Approval Pub. Date: Granted Pub. Date: 2001.08.01
International Classifi-cation: A01N53/02,C07C69/743,C07C245/20
Applicant(s) Name: Dalian Inst. of Chemical Physics, Chinese Academy Address: 116023
Inventor(s) Name: Li Zhengning, Chen Huilin
Attorney & Agent: WANG HUIMIN
Abstract:
     The present invention features that solvent for diazotizating reaction, 2,3-demthyl-2-butylene or its mixture with C6-C12 paraffin, C6-C16 arene or C4-C12 ether as assistant solvent is also the raw material for next cyclopropanizing reaction and multi-substituted cyclopropane carboxylate is produced through the cyclopropanizing reaction of diazotizating reaction product and solvent mixture in the presence of catalyst. The reaction product is separated through simple distillation and recovered mixture is reused as solvent for diazotizating reaction. The said method is simple and low in prodn cost.
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