Abstract
Abstract A convenient new approach to the synthesis of the acetate and the propionate of (2 S ,3 R ,7 R / S )-3,7-dimethyltridecan-2-ol, sex attractants of Diprion pini L., using the cyclopropanation of the ethoxycarbonyl group in O -THP protected ethyl ( S )-lactate with ethylmagnesium bromide in the presence of titanium(IV) isopropoxide followed by C-2–C-3 cyclopropane ring opening as the key steps has been performed.
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