反应详情

A solution of cis-4-hydroxycyclohexanecarboxylic acid (720 mg, 0.5 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.33 g, 6 mmol) and 1-hydroxy-7-azabenzotriazole (816 mg, 6 mmol) in dichloromethane (6 ml) was treated with morpholine 1.3 ml, 15 mmol). After stirring at room temperature for 18 hours, the crude reaction was applied to a SCX ion exchange cartridge (Varian bond-elute, 5 g) and washed with methanol and then a mixture of 0.880 ammonia:methanol (1:9). The combined basic fractions were concentrated in vacuo, and the resulting residue was purified by column chromatography eluting with a mixture of 0.880 ammonia:ethanol:dichloromethane (1:9:90) to afford the title compound (D55); MS (ES+) m/e 214 [M+H]+.

1. customthe crude reaction
2. washwashed with methanol
3. additiona mixture of 0.880 ammonia:methanol (1:9)
4. concentrationThe combined basic fractions were concentrated in vacuo
5. customthe resulting residue was purified by column chromatography
6. washeluting with a mixture of 0.880 ammonia:ethanol:dichloromethane (1:9:90)