反应详情

To a solution of tert-butyl 4-oxo-2-phenyl-1,3,8-triazaspiro[4.5]dec-1-ene-8-carboxylate (45 mg, 0.137 mmol) in dichloromethane (5 mL) was added trifluoroacetic acid (2 mL). After 2 h the reaction was concentrated to give the title compound. MS: m/z=230.1 (M+1).

1. concentrationAfter 2 h the reaction was concentrated