Hydrochloric Acid → HCID 86736579, compound

Reaction equation

[O:1]1[CH:7]2[CH:2]1[CH2:3][N:4]([C:8]([O:10][CH2:11][C:12]([Cl:15])([Cl:14])[Cl:13])=[O:9])[CH2:5][CH2:6]2.[ClH:16]>O1CCOCC1.O>[OH:1][C@H:2]1[C@H:7]([Cl:16])[CH2:6][CH2:5][N:4]([C:8]([O:10][CH2:11][C:12]([Cl:15])([Cl:14])[Cl:13])=[O:9])[CH2:3]1

Participants

Procedure

5.0 g (0.018 mol) of 3,4-epoxy-1-(β,β,β-trichloroethoxycarbonyl)-piperidine are dissolved in 50 ml of dioxane and the solution is treated with 60 ml of 6 N hydrochloric acid. The slightly exothermic reaction is kept at room temperature by means of a water bath, and the reaction mixture is stirred for 15 hours, then diluted with water and extracted with 3 times 100 ml of methylene chloride. The organic phase is washed with 0.1 N sodium hydroxide solution and then with a saturated aqueous solution of sodium chloride, dried over sodium sulphate and then evaporated to dryness, first under a water pump vacuum and then under a high vacuum, whereupon trans-3-hydroxy-4-chloro-1-(β,β,β-trichloroethoxycarbonyl)-piperidine is obtained in the form of a slightly yellow oil.