| 摘要 |
The isomers of synthetic insect sex pheromones or their precursors are separated by selectively forming an inclusion complex with the E-isomer and urea or thiourea. In order for the E-isomer complex to form selectively it is necessry that the mono-olefin which forms the complex have a primary, linear chain of at least 7 atoms, a molecular diameter of 2.8-6A, and a polar functional group having transverse dimensions of less than 6A. Branching between the olefinic bond and the polar functional group is limited to methyl groups.
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