Ammonium Chloride → HCID 10920779, compound

Temperature

0 °C

On a stirred solution of (R)-2,2-dimethyl-1,3-dioxolane-4-carbaldehyde (11.0 g, 0.063 mol, 75% assay, 94% ee) in THF (40 g) at 0° C. under nitrogen atmosphere, a vinyl magnesium bromide solution (1.0 M in THF, 88.7 ml, 0.0887 mol) was added over a period of 90 min. After 2 h stirring at 0° C., the temperature was raised to 10° C. and a saturated ammonium chloride solution (60 ml) was added dropwise in 30 min. The quenched reaction mixture at 20° C. was then diluted with ethyl acetate (100 ml) and demi water (50 ml) and the layers separated. The organic phase was further washed with demi water (50 ml). The organic phase was then dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to furnish 11.7 g of 1-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)prop-2-en-1-ol as a light yellow oil. Spectroscopic data are conform to literature.

1. temperaturethe temperature was raised to 10° C.
2. customThe quenched reaction mixture at 20° C.
3. customthe layers separated
4. washThe organic phase was further washed with demi water (50 ml)
5. dry with materialThe organic phase was then dried over anhydrous magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure

ORD record

ord-adb04ee9658a4f1b9cf8625a8b26891e

Source dataset

uspto-grants-2012_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08258323B2