Formic Acid → 1-[(Benzyloxy-formyl-amino)-methyl]-4,4-dimethyl-cyclohexanecarboxylic acid

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Reaction Steps

To a cold solution of formic acid (12.8 mL, 0.33 mol) in dichloromethane (50 mL) at 0° C. under a nitrogen atmosphere was added acetic anhydride (4.8 mL, 51 mmol). After 1 h, a solution of 1-(benzyloxyamino-methyl)-4,4-dimethyl-cyclohexanecarboxylic acid from Preparation 30 (5.11 mmol theoretical) in dichloromethane (50 mL) was added. The reaction was stirred at room temperature for 18 h and was concentrated in vacuo. Water (100 mL) was added and the mixture was extracted with dichloromethane (50 mL×5). The combined organic extracts were dried (MgSO4) and were evaporated in vacuo to yield the title compound (1.55 g, 95%). MH+320.

Provenance & Evidence