Triethylamine → HCID 66798963, compound

Participants

Reaction Steps

2-Bromomethyl-6-chlorobenzoic acid methyl ester (1.689 mmol, 1.0 eq) was dissolved in toluene (5.2 ml) and triethylamine (2.534 mmol, 1.5 eq), and (R)-methyl 4-aminochromane-7-carboxylate (A-04) (1.689 mmol, 1 eq) was added. The reaction mixture was refluxed for 16 h and then diluted with water and dichloromethane. The phases were separated and the aqueous phase was extracted with dichloromethane (2×). The organic phases were washed with sat. NaCl solution, dried over magnesium sulfate and concentrated. The crude product was purified by column chromatography (silica gel, cyclohexane:EA 3:1), and the desired product (R)-methyl 4-(7-chloro-1-oxoisoindolin-2-yl)chromane-7-carboxylate (D-03) was thus obtained. Yield: 60%

Provenance & Evidence