反应详情

To a solution of 0.65 mmol 3-(2-benzyl-2,3-dihydro-1H-isoindol-5-yl)-2-methyl-tetrahydro-furan-3-ol (Example A64(a)) and 1.81 mmol triethylamine in 2 ml dichloromethane at 0° C. was added dropwise a solution of 0.84 methanesulfonyl chloride in 0.3 ml dichloromethane. The mixture was stirred at room temperature for 2 h and then re-cooled to 0° C. 1.94 mmol DBU was added and the mixture stirred at room temperature overnight. The reaction mixture was then concentrated in vacuo and the residue was purified by chromatography (SiO2, heptane/ethyl acetate) to yield the title compound as a colourless oil (33% yield). MS (m/e): 292.1 ([M+H]+, 100%).

1. customat 0° C.
2. temperaturere-cooled to 0° C
3. stirringthe mixture stirred at room temperature overnight
4. concentrationThe reaction mixture was then concentrated in vacuo
5. customthe residue was purified by chromatography (SiO2, heptane/ethyl acetate)