Benzyl Alcohol → HCID 178418417、化合物
反応式
[OH:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][N:3]=1.S(=O)(=O)(O)O.[CH2:16](O)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>>[OH:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([O:8][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[O:7])=[CH:4][N:3]=1参加物
4
実験手順
30 g of 6-hydroxynicotinic acid were treated with 500 ml of benzyl alcohol and 1 ml of concentrated sulfuric acid. After boiling at reflux for 3 days, the reaction mixture was poured on to ice-water, extracted several times with ethyl acetate, washed with water, dried over sodium sulfate and evaporated, firstly in a water-jet vacuum and then in a high vacuum. The semi-crystalline residue was filtered over silica gel (eluent hexane/ethyl acetate=2:1, then ethyl acetate) and recrystallized from ethyl acetate/hexane. There were obtained 19 g of benzyl 6-hydroxy-nicotinate in colourless crystals, m.p. 178°-179° C.
後処理
- temperatureat reflux for 3 days