Water → cis-1,2-Cyclohexanedimethanol

63 g of anhydrous cis-1,2-cyclohexanedicarboxylic acid was dissolved in 200 ml of dried ether and the solution was added dropwise to an ice-cooled suspension of 29 g of lithium aluminum hydride in 1000 ml of dried ether. After completion of the dropwise addition, the solution was heated under reflux for 30 minutes, following return to room temperature, 50 ml of water was added thereto, followed by filtration. The filter cake was washed twice with tetrahydrofuran (200 ml each time). The ethereal filtrate and the tetrahydrofuran washings were combined, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resiude was distilled under reduced pressure and fractions boiling at 122° to 125° C. (0.7 mmHg) were collected to obtain 53 g of pure cis-1,2-cyclohexanedimethanol.

1. temperaturecooled
2. additionAfter completion of the dropwise addition
3. temperaturethe solution was heated
4. temperatureunder reflux for 30 minutes
5. customto room temperature
6. filtrationfollowed by filtration
7. washThe filter cake was washed twice with tetrahydrofuran (200 ml each time)
8. dry with materialdried over anhydrous sodium sulfate
9. concentrationconcentrated under reduced pressure
10. distillationThe resiude was distilled under reduced pressure and fractions boiling at 122° to 125° C. (0.7 mmHg)
11. customwere collected

ORD record

ord-3a48b67395704d82a813c3d81d2c5cfa

Source dataset

uspto-grants-1991_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05017213