Acetone → Cyclopentanpropionyl carnitine chloride

Reaction equation

[CH3:1][N+:2]([CH2:5][CH:6]([OH:11])[CH2:7][C:8]([O-:10])=[O:9])([CH3:4])[CH3:3].[CH2:12]1[CH2:16][CH2:15][CH:14]([CH2:17][CH2:18][C:19]([Cl:21])=[O:20])[CH2:13]1.CC(C)=O>FC(F)(F)C(O)=O>[CH:14]1([CH2:17][CH2:18][C:19]([C:6]([CH2:7][C:8](=[O:10])[O-:9])([CH2:5][N+:2]([CH3:3])([CH3:4])[CH3:1])[OH:11])=[O:20])[CH2:15][CH2:16][CH2:12][CH2:13]1.[Cl-:21]

Participants

Procedure

Carnitine chloride (1.97 g; 0.01 moles) was dissolved in trifluoroacetic acid (10 cc). To the resulting solution 3-cyclopentanpropionyl chloride (1.60 g; 0.01 moles) was slowly added under stirring. The resulting mixture was kept under stirring at 45° C. overnight. The mixture was then cooled, acetone (40 ml) was added and the mixture was kept under stirring for 2 hours in ice. The precipitate thus formed was filtered off and to the filtrate ethyl ether was added. The white solid which precipitated was dissolved in ethanol-acetone (5:1) and once again precipitated with ether. M.P. 170°-172° C., yield 90%.