3-Hydroxypiperidine → HCID 178501991、化合物
反応式
Cl[C:2]1[N:7]=[C:6]([NH:8][C:9]([O:11][CH3:12])=[O:10])[N+:5]([O-:13])=[C:4]([NH:14][C:15]([O:17][CH3:18])=[O:16])[CH:3]=1.[OH:19][CH:20]1[CH2:25][CH2:24][CH2:23][NH:22][CH2:21]1>C(Cl)Cl>[OH:19][CH:20]1[CH2:25][CH2:24][CH2:23][N:22]([C:2]2[N:7]=[C:6]([NH:8][C:9]([O:11][CH3:12])=[O:10])[N+:5]([O-:13])=[C:4]([NH:14][C:15]([O:17][CH3:18])=[O:16])[CH:3]=2)[CH2:21]1参加物
4
実験手順
A suspension of 5.2 g. of dimethyl 6-chloro-2,4-pyrimidine-dicarbamate-3-oxide in 300 ml. of methylene chloride is treated with 12.4 g. of 3-hydroxy-piperidine and stirred for 60 hours under an argon atmosphere. The residue is then filtered off and the filtrate is concentrated, a white precipitate separating out. This precipitate is filtered off and recrystallized from a mixture of methylene chloride and methanol, there being obtained pure dimethyl racemic-6-(3-hydroxy-1-piperidinyl)-2,4-pyrimidine-dicarbamate-3-oxide, having a melting point of 255° C. (decomposition).