1-Chloroethyl chloroformate → 4-(4-Chlorophenyl)tetrahydropyridine
反応式
C([N:8]1[CH2:13][CH2:12][C:11]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)(C)[CH2:10][CH2:9]1)C1C=CC=CC=1.ClC(OC(Cl)=O)C>C(Cl)Cl>[Cl:21][C:18]1[CH:19]=[CH:20][C:15]([CH:11]2[CH:10]=[CH:9][NH:8][CH2:13][CH2:12]2)=[CH:16][CH:17]=1参加物
4
実験手順
To a cold (0° C.) solution of N-benzyl-4-(4-chlorophenyl)-4-methylpiperidine (3) (0.41 g, 1.4 mmol) in CH2Cl2 was 1.1 equivalent of 1-chloroethylchloroformate. The reaction was then heated to reflux for 2 hrs. Excess solvent was removed and the residue was brought up into methanol. The mixture was refluxed for 2 hrs and excess methanol was removed under reduced pressure. Precipitation of the hydrochloride salt 4 by the addition of CH2Cl2 followed by filtration resulted in the quantitative isolation of the desired crystalline product 4 (100%, 0.34 g). MS m/z: (M+210)