6-(2-(4-Chlorobenzenesulphonylamino)indan-5-yl)-6-(3-pyridyl)hex-5-enoic acid → 3-Pyridinehexanoic acid, epsilon-(2-(((4-chlorophenyl)sulfonyl)amino)-2,3-dihydro-1H-inden-5-yl)-

Participants

Reaction Steps

3.0 g of 6-(2-(4-chlorobenzenesulphonylamino)indan-5-yl)-6-(3-pyridyl)hex-5-enoic acid are dissolved in 50 ml of 0.3N sodium hydroxide solution and hydrogenated with 1 g of palladium/charcoal at 40° C. and 3.5 bar for 12 hours. The catalyst is then removed by suction filtering and the filtrate is adjusted to pH 4 to 5. The product precipitated is separated off and taken up in chloroform. The organic extract is washed with water, dried and evaporated down. Then the mixture is chromatographed over a silica gel column using the eluant ethylene chloride/ethyl acetate/glacial acetic acid (70:30:2). The third fraction contains the desired product.

Provenance & Evidence