HCID 131720655, compound → HCID 15824693, compound

Participants

Reaction Steps

A solution is prepared of 20 g (0.0532 moles) of 1,4-bis-(1-indenyl)-but-2-ine in 200 ml of pyridine. The alkyne is then hydrogenated with hydrogen at 1 atm., in the presence of 1.0 g of Pd on BaSO4 (ALDRICH). After 3 hours the absorption of hydrogen stops. The reddish solution is filtered, diluted with water and extracted with diethyl ether. The extract, after evaporation of the solvent, is purified by chromatography on a silica gel column with petroleum ether as eluant. 17 g of 1,4-bis-(1-indenyl)-Z-but-2-ene are obtained with a yield of 85%.

Provenance & Evidence