Water → HCID 67815172, compound

Participants

Reaction Steps

111 g (594 mmol) of 2-chloro-6,7-dihydro-1-benzothiophen-4(5H)-one together with 414 g (3.57 mol) of triethylsilane are initially charged in 1.25 ml of dichloromethane, and 506 g (3.57 mol) of boron trifluoride/ether complex are added at room temperature. The reaction mixture is stirred at room temperature for 84 h and then added to water. The organic phase is dried over sodium sulphate and concentrated under reduced pressure. This gives 90.0 g of 2-chloro-4,5,6,7-tetrahydro-1-benzothiophene.

Provenance & Evidence