反应详情

温度

12.5 °C

A solution of 1-[(trimethylsilyl)oxy]cycloheptanecarbonitrile (737.5 g) in tetrahydrofuran (738 ml) was charged to a vessel containing 1 molar lithium aluminium hydride solution in tetrahydrofuran (4980 ml) and tetrahydrofuran (369 ml) whilst maintaining the temperature at 55° C. to 60° C. Tetrahydrofuran (738 ml) was charged and the reaction stirred for 3 hours at 60° C. to 65° C. The reaction was cooled to 10 to 15° C. and charged with water (193 ml), premixed sodium hydroxide solution [water (389 ml), sodium hydroxide (69 g)], tetrahydrofuran (738 ml) and water (193 ml) maintaining the temperature at 15° C. to 25° C. The mixture was stirred for 70 minutes and filtered. The filter cake was washed with tetrahydrofuran (1476 ml) twice. The filtrates and washes were combined and charged to a reaction vessel and concentrated to ca. 1480 mL at 65° C. to 70° C. The mixture was cooled to 15° C. to 25° C. and transferred to a container with tetrahydrofuran (369 ml), to provide the title compound (381 g) as a colourless solution in tetrahydrofuran (1613 ml).

1. temperaturewhilst maintaining the temperature at 55° C. to 60° C
2. temperaturemaintaining the temperature at 15° C. to 25° C
3. stirringThe mixture was stirred for 70 minutes
4. filtrationfiltered
5. washThe filter cake was washed with tetrahydrofuran (1476 ml) twice
6. additioncharged to a reaction vessel
7. concentrationconcentrated to ca. 1480 mL at 65° C. to 70° C
8. temperatureThe mixture was cooled to 15° C. to 25° C.