Hydrochloric Acid → 958852-64-7

Participants

Reaction Conditions

Reaction Steps

1.57 ml of phosgene (20% solution in toluene, 2.96 mmol) were initially charged in 5 ml of dichloroethane and cooled to −20° C., then a mixture of 8-azaspiro-[4,5]decane (750 mg, 2.96 mmol) and triethylamine (1.28 ml, 9.2 mmol, 3.1 eq.) was added slowly. After 30 min, the mixture was allowed to come to RT; after 1 h, according to LC-MS, a little starting material was still present but also three new peaks. Subsequently, the mixture was added to 2 N aqueous HCl, the aqueous phase was extracted with dichloromethane, and the organic phase was washed with saturated NaHCO3 solution and dried over sodium sulfate; subsequently, the mixture was concentrated by rotary evaporation under reduced pressure. Crude yield: 592 mg

Provenance & Evidence