[CH2:1]([C:4]1([C:10]([OH:12])=[O:11])[CH2:9][CH2:8][CH2:7][CH2:6][CH2:5]1)[CH2:2][CH3:3].S(Cl)([Cl:15])=O.[CH2:17]([NH2:21])[CH2:18][CH2:19][CH3:20]>CCOCC>[CH2:1]([C:4]1([C:10]([Cl:15])=[O:12])[CH2:9][CH2:8][CH2:7][CH2:6][CH2:5]1)[CH2:2][CH3:3].[CH2:17]([NH:21][C:10]([C:4]1([CH2:1][CH2:2][CH3:3])[CH2:5][CH2:6][CH2:7][CH2:8][CH2:9]1)=[O:11])[CH2:18][CH2:19][CH3:20]1-n-propylcyclohexanoyl chloride (bp. 118°-122°/16 mm) was prepared in the usual way from 1-n-propylcyclohexanoic acid and thionyl chloride. A solution of this acid chloride (2.0 g) in ether (20 ml) was added dropwise to a stirred solution of n-butylamine (3.0 g) in ether (100 ml). After 3 hours the ethereal solution was washed with dilute hydrochloric acid and water, dried (MgSO4), and concentrated to give a colourless syrup. Distillation gave N-n-butyl-1-n-propylcyclohexanamide, bp. 116°-8°/1 mm.
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