Oxalyl chloride → 2-Methylcyclohexanecarbonyl chloride

Participants

Reaction Steps

To a solution of 2-methylcyclohexanecarboxylic acid (6.00 mL, 42.6 mmol, mixture of cis and trans) in DCM (60 mL) was added oxalyl chloride (4.80 mL, 55.3 mmol) followed by DMF (0.03 mL, 0.4 mmol). The reaction was stirred at ambient temperature for about 4 h before it was concentrated under reduced pressure to a constant weight to afford 2-methylcyclohexanecarbonyl chloride (mixture of diastereomers) as a yellow oil (7.0 g, 97%): 1H NMR (400 MHz, CDCl3) δ 2.98-2.94 (m, 1H), 2.39-2.35 (m, 1H), 1.91-1.82 (m, 1H), 1.79-1.72 (m, 1H), 1.69-1.60 (m, 2H), 1.57-1.47 (m, 2H), 1.42-1.36 (m, 1H), 1.34-1.26 (m, 1H), 1.04-0.96 (m, 3H).

Provenance & Evidence