Hydrochloric Acid → HCID 70872577, compound

Participants

Reaction Steps

Tert-butyl 8-but-2-ynyl-10-(fluoromethyl)-11-oxa-3,8-diazaspiro[5.5]undecane-3-carboxylate (23.0 mg, 0.0676 mmol) was dissolved in dichloromethane (2 mL) and treated with HCl in dioxane (1.69 mL of 4 M, 6.76 mmol). The reaction mixture was stirred for 2 h, then diluted with dichloromethane (10 mL) and 1:1 saturated sodium bicarbonate/1 M NaOH (10 mL). The organic layer was separated, dried over Na2SO4, and concentrated to yield 8-but-2-ynyl-10-(fluoromethyl)-11-oxa-3,8-diazaspiro[5.5]undecane hydrochloride (16.0 mg, 0.0666 mmol, 98%). ESI-MS m/z calc. 240.2. Found 241.5 (M+1)+; Retention time: 0.22 minutes (3 min run).

Provenance & Evidence