反应详情

11.5 g of 8-cyclopentyl-2-methyleneoctanoic acid ethyl ester, in the form of a nearly colourless oil, which is purified by chromatography on silica gel (migrating agent: 95:5 petroleum ether/ethyl acetate), are obtained by the procedure described in Example (1b) from 22.1 g of (6-cyclopentylhexyl)-malonic acid ethyl ester, 2.8 g of paraformaldehyde, 22 ml of pyridine and 1 ml of piperidine.

1. custom11.5 g of 8-cyclopentyl-2-methyleneoctanoic acid ethyl ester, in the form of a nearly colourless oil, which is purified by chromatography on silica gel (migrating agent: 95:5 petroleum ether/ethyl acetate)
2. customare obtained by the procedure