Triethylamine → benzyl (1S,3R)-3-(4-chlorobutanamido)cyclohexylcarbamate

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Reaction Steps

To a stirred slurry of benzyl N-[(1S,3R)-3-aminocyclohexyl]carbamate, 18e, (0.97 g, 3.41 mmol) in CH2Cl2 (34 mL), was added Et3N (1.00 mL, 7.15 mmol), followed by 4-chlorobutanoyl chloride (0.40 mL, 3.58 mmol). After stirring at room temperature, the mixture was diluted with CH2Cl2, washed with 1N HCl (2×), 1N NaOH (2×), and brine. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo to give 1.07 g of the desired product.

Provenance & Evidence