Pyridine → 4-[4-(4,4'-Dipentylbicyclohexyl-4-yl)buta-1,3-diynyl]-4,4'-dipentylbicyclohexyl

Participants

Reaction Steps

A mixture of 5.00 g of 4-ethynyl-4,4′-dipentylbicyclohexyl, 12.5 ml of pyridine, 12.5 ml of methanol and 3.635 g of copper(II) acetate monohydrate is stirred at RT for 1.5 hours and subsequently heated at the boil. The mixture is stirred for 10 hours and subjected to conventional work-up, giving 4-[4-(4,4′-dipentylbicyclohexyl-4-yl)buta-1,3-diynyl]-4,4′-dipentylbicyclohexyl (C 77 SmB 198 I, Δn=0.013, Δε=−0.27).

Provenance & Evidence