| 摘要 |
A novel process for the preparation of 3,3-dimethyl-2-(2'-methoxycarbonyl-trans 1'-propenyl)-1-cyclopropane carboxylic (1R,2R) acid or d-trans pyrethric (1R,2R) acid of the formula BY REACTING 3,3-DIMETHYL-2-FORMYL-1-CYCLOPROPANECARBOXYLIC (1R,2R) acid or a salt thereof with methyl propionate under anhydrous basic conditions.
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