反应详情

To a stirred solution of tert-butyl 2-oxo-1-((1-tosyl-1H-indol-4-yl)methyl)-1,9-diazaspiro[5.5]undecane-9-carboxylate (0.12 g, 0.21 mmol) in DCM (5.0 mL), TFA (0.5 mL) was added at 0° C. and the reaction mixture was stirred for 16 h at rt under a nitrogen atmosphere. The reaction mixture was concentrated to yield the title compound as colourless oil (0.11 g, 95%) which was used in the next step.

1. concentrationThe reaction mixture was concentrated