Acetonitrile → 3-Amino-3-(4-fluorophenyl)acrylonitrile

A solution of 0.390 ml (2.78 mmol) diisopropylamine in dry THF (2 ml) was cooled to −70° C. under inert gas atmosphere, and 1.74 ml (2.78 mmol) n-butyllithium solution (1.6 M in hexanes) were added dropwise. Then, a solution of 129 μl (2.45 mmol) acetonitrile in dry THF (2 ml) was slowly added over 10 min. The resulting solution was stirred for further 30 min at −70° C. before a solution of 200 mg (1.635 mmol) 4-fluorobenzonitrile in dry THF (2 ml) was added. The mixture was allowed to warm to room temperature and stirred for 1 h before water (4 ml) was added slowly. The mixture was extracted several times with dichloromethane (50 ml). The combined organic layers were dried over sodium sulfate and concentrated under reduced pressure to yield 244 mg (92% of th.) of the crude title compound which was used in the next step without further purification.

1. additionwere added dropwise
2. additionwas added
3. additionwas added slowly
4. extractionThe mixture was extracted several times with dichloromethane (50 ml)
5. dry with materialThe combined organic layers were dried over sodium sulfate
6. concentrationconcentrated under reduced pressure

ORD record

ord-21ee736348914147b5fc0b5a80f63f80

Source dataset

uspto-grants-2013_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08604028B2