反应详情

A solution of 4-chlorophenylisocyanate (46 mg, 0.3 mmol) in dichloromethane (5 ml) was treated with a solution of Example 3 (103 mg, 0.3 mmol) in methanol (1 ml). After stirring at room temperature for 30 min the solution was concentrated under reduced pressure and the residue chromatographed on silica gel eluting with dichloromethane/methanol (10:1) to the give the title compound (72 mg, 48%) as a pale yellow solid; MS(ES+) m/e 496/498/500 [M+H]+.

1. concentrationwas concentrated under reduced pressure
2. customthe residue chromatographed on silica gel eluting with dichloromethane/methanol (10:1) to the