AN IMPROVED METHOD FOR PREPARING DIMETHYL CYCLOHEPTA-1,3,5-TRIENE-3,4-DICARBOXYLATE

Mitsunori Oda Department of Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama, 930-8555, JapanCorrespondence[email protected]

Shuichi Hayashi Department of Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama, 930-8555, Japan

Shengli Zuo Department of Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama, 930-8555, Japan

Ryuta Miyatake Department of Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama, 930-8555, Japan

Shigeyasu Kuroda Department of Applied Chemistry, Faculty of Engineering, Toyama University, Gofuku 3190, Toyama, 930-8555, Japan

Noboru Morita Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan

Toyonobu Asao Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan

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Abstract

A sequence involving bromination of dimethyl 1,3-cyclo-heptadiene-2,3-dicarboxylate (2) and subsequent double dehydrobromination provided an improved synthetic method for preparing dimethyl cyclohepta-1,3,5-triene-3,4-dicarboxylate (1). The mechanism for the dehydrobromination step is also discussed.

ACKNOWLEDGMENT

This work was supported by a Grant-in-Aid for Scientific Research (No. 10640513) from the Ministry of Education, Science, Sports, and Culture, Japan.

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AN IMPROVED METHOD FOR PREPARING DIMETHYL CYCLOHEPTA-1,3,5-TRIENE-3,4-DICARBOXYLATE

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AN IMPROVED METHOD FOR PREPARING DIMETHYL CYCLOHEPTA-1,3,5-TRIENE-3,4-DICARBOXYLATE

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