3,4,5-Trimethoxybenzoic Acid → HCID 68681847, compound

Participants

Reaction Steps

Experimental condition analogous to Example 2 were used with 2-(S)-{[3-(2,4-difluoro-phenyl)-2-methyl-allylaminmo]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester were used with 2-(S)-carboxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester and 3-(2,4-difluoro-phenyl)-2-methyl-propenal described in scheme 15) 0.4 g (1 mmol), 3,4,5-trimethoxy benzoic acid 0.27 g (1.3 mmol), triethylamine 0.1 ml, 1-(dimethylaminopropyl)-3-ethylcarbodiimide 0.31 g (1.63 mmol), and 1-hydroxybenzotriazole 0.014 g (0.1 mmol) in 10 ml DCM. The reaction yielded 0.49 g of 2-(S)-{[3-(2,4-difluoro-phenyl)-2-methyl-allylamino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester. The compound was transformed to the HCl salt, yielding 45 mg of a white solid. Yield: 14%.

Provenance & Evidence