Ammonia → HCID 59456350, compound

Participants

Reaction Conditions

Reaction Steps

2.0 g (5.9 mmol) of 2-(4′-propylbicyclohexyl-4-yl)selenophene are initially introduced in 20 ml of diethyl ether, and 5.0 ml (8.0 mmol, 15% soln. in hexane) of n-BuLi are metered in rapidly. The mixture is heated under reflux for 25 min and subsequently cooled to −60° C. 1.5 ml (24.1 mmol) of methyl iodide are added, and the batch is stirred for 8.5 h with slow thawing to RT. Sat. ammonium chloride soln. and conc. ammonia soln. are added successively, and the mixture is stirred vigorously for a few minutes. The organic phase is separated off, and the aqueous phase is extracted with MTBE. The combined organic phases are washed with water, 2 N hydrochloric acid and sat. sodium chloride soln. The solution is dried using sodium sulfate and concentrated to dryness. The crude product is purified by column chromatography (SiO2, n-heptane n-heptane:EtOAc=95:5). The further purification is carried out by recrystallisation from IPA/n-heptane (10:1) and from acetone. 2-Methyl-5-(4′-propylbicyclohexyl-4-yl)selenophene is obtained as a colourless solid (m.p. 26° C.).

Provenance & Evidence