Dichloromethane → HCID 21069784, compound

Dichloromethane (42 mL) and tin tetrachloride (64.9 g, 249 mmol) were added to a 250 mL round bottom flask equipped with a magnetic stirrer, temperature probe, condenser and Argon inlet-outlet. The mixture was cooled to 0–5° C. Acetone cyanohydrin (21.2 g, 249 mmol) was added over 15 min, followed by slow addition of 2-bromoethanol (46.69 g, 373.6 mmol). The reaction mixture was stirred at 20–25° C. for 22 h. The mixture was cooled to 0–5° C., diluted with water (148 mL), and extracted with dichloromethane (3×64 mL). The combined CH2Cl2 extracts were dried (MgSO4), filtered and concentrated under vacuum to afford the crude product as a yellow liquid. The material was purified by vacuum distillation (10 mm Hg) using a Vigreux column. The fraction boiling between 75–85° C. was collected to afford 2-(2-Bromoethoxy)-2-methylpropanenitrile as a colorless oil (15.09 g).

1. customequipped with a magnetic stirrer
2. temperatureThe mixture was cooled to 0–5° C
3. temperatureThe mixture was cooled to 0–5° C.
4. extractionextracted with dichloromethane (3×64 mL)
5. dry with materialThe combined CH2Cl2 extracts were dried (MgSO4)
6. filtrationfiltered
7. concentrationconcentrated under vacuum
8. customto afford the crude product as a yellow liquid
9. distillationThe material was purified by vacuum distillation (10 mm Hg)
10. customboiling between 75–85° C.
11. customwas collected

ORD record

ord-f21bc33dc0b54b0883423f6f453fcfcf

Source dataset

uspto-grants-2007_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07157447B2