Cyclopentylamine → 2-(Aminocyclopentyl)-6-chloronicotinic acid
反応式
Cl[C:2]1[N:10]=[C:9]([Cl:11])[CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=[O:5].[CH:12]1([NH2:17])[CH2:16][CH2:15][CH2:14][CH2:13]1>C(O)(C)(C)C>[NH2:17][C:12]1([C:2]2[N:10]=[C:9]([Cl:11])[CH:8]=[CH:7][C:3]=2[C:4]([OH:6])=[O:5])[CH2:16][CH2:15][CH2:14][CH2:13]1参加物
4
反応条件
- 温度
- 100 °C
実験手順
15 g of 2,6-dichloronicotinic acid (70.31 mmol, Aldrich) and 34.7 ml of cyclopentylamine (351.56 mmol) are placed in a sealed tube containing 40 ml of tert-butanol. The mixture is heated at 100° C. overnight and evaporated to dryness. The residue is taken up in water and the product is acidified by pouring in an aqueous solution of acetic acid at 10%, and the mixture is then extracted with choloroform. The organic phases are combined, dried over sodium sulphate, filtered, and concentrated under vacuum. The solid residue is triturated in an ether/pentane mixture so as to give 5 g of expected product in the form of an off-white solid (yield=29.5%).