Diothane Hydrochloride,HMR
ChEBI: N-phenylcarbamic acid [2-[anilino(oxo)methoxy]-3-(1-piperidinyl)propyl] ester is a carbamate ester.
15.0 g phenylisocyanate in 100 ml of anhydrous ether are added to 10 g of N-
(1,2-dihydroxypropyl)-piperidine (prepared from glycide and piperidine) and
the solution boiled for two hours, after which it is cooled and saturated with
dry hydrogen chloride gas. The ether layer is then decanted off and the
remaining insoluble product is dissolved in a hot mixture of acetone and ethyl
acetate which on cooling precipitates white crystals of the hydrochloride of the
ester of 1,2-propanediol, 3-(1-piperidinyl)-, bis(phenylcarbamate); MP 197°-
198°C. A base form may be prepared by adding an equivalent of triethyl
amine.
1,2-Propanediol, 3-(1-piperidinyl)-, bis(phenylcarbamate)
(ester), hydrochloride
