Triethylamine → (3R)-3-[(2-chloro-benzoyl)amino]-2,3-dihydro-1H-indene-5-carboxylic acid methyl ester

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Reaction Steps

Method 1 (3R)-3-Amino-2,3-dihydro-1H-indene-5-carboxylic acid methyl ester hydrochloride (A-01) (8.784 mmol, 1 eq) was dissolved in dichloromethane, and triethylamine (3 eq) and 2-chlorobenzoic acid chloride (1.2 eq) were added at 0° C. under a protecting gas atmosphere. The reaction mixture was stirred for 1 h at RT. Then the reaction mixture was diluted with sat. NaHCO3 solution and the aqueous phase was extracted with dichloromethane (3×50 ml). The organic phase was dried over sodium sulfate and concentrated to yield (3R)-3-[(2-chloro-benzoyl)amino]-2,3-dihydro-1H-indene-5-carboxylic acid methyl ester (B-01). Yield: 98%

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