Oxalyl chloride → 2-Methylcyclohexanecarbonyl chloride

HRID 1854357Notes

Reaction equation

HRID 1854357 reaction equation
[CH3:1][CH:2]1[CH2:7][CH2:6][CH2:5][CH2:4][CH:3]1[C:8]([OH:10])=O.C(Cl)(=O)C([Cl:14])=O>C(Cl)Cl.CN(C=O)C>[CH3:1][CH:2]1[CH2:7][CH2:6][CH2:5][CH2:4][CH:3]1[C:8]([Cl:14])=[O:10]

Participants

5

Reactant 2

HCID 65578Oxalyl chlorideHCID 858112-Methylcyclohexanecarboxylic acid

Product 1

HCID 27598372-Methylcyclohexanecarbonyl chlorideYield 102.3%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideCatalystHCID 6344DichloromethaneSolvent

Procedure

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).

Workup

  1. concentrationwas concentrated under reduced pressure to a constant weight

Sources & evidence

ORD record
ord-362d8caeb597494c84eb11580d09d18c
Source dataset
uspto-grants-2015_02
Patent number
US08962629B2

Reaction notes

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