Methylamine → HCID 67238793, compound

Participants

Reaction Steps

A stirred solution of (2S,4S)-1-(tert-butoxycarbonyl)-4-({-4-[(3-chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}oxy)piperidine-2-carboxylic acid (4 g, 7.31 mmol, prepared as described in Example 1) in THF (50 ml) was cooled to −15° C. (acetone/ice). NMM (1.21 ml, 11.0 mmol) was added to the solution followed by IBCF (1.24 ml, 9.51 mmol). The reaction mixture was held at −15° C. (the formation of the mixed anhydride was monitored by TLC (THF)). After 5-10 minutes, the reaction mixture was treated with a 2.0M solution of methylamine in THF (10 ml) at −15° C. and allowed to warm to room temperature. The reaction mixture was diluted with DCM (250 ml), washed with water (2×20 ml) and concentrated to give tert-butyl (2S,4S)-4-({4-[(3-chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}oxy)-2-[(methylamino)carbonyl]piperidine-1-carboxylate (4.1 g, 100%) as pale yellow foam which was used without further purification; Mass Spectrum: (M+H)+ 560.1.

Provenance & Evidence