Isopropanol → 1-(3-Chlorophenyl)cyclobutane-1-carbonitrile

A solution of 3.37 g (22.2 mmol) of 3-Chlorobenzyl cyanide and 4.93 g (24.4 mmol) of 1,3-dibromopropane in 15 mL of ether was added dropwise into 1.17 g (48.8 mmol) of NaH in 60 mL of DMSO. The temperature was held between 25° and 35° by water bath cooling. The mixture was stirred at room temperature for 18 hours. The mixture was cooled in ice water and 3 mL of 2-propanol was added dropwise, followed by the addition of 50 mL of water. The mixture was extracted with hexane (3×100 mL), and the combined extracts were washed with water (3×75 mL), dried over anhydrous magnesium sulfate, filtered, and concentrated to yield 3.0 g (71%) product as colorless oil. 1H NMR (CDCl3) δ 2.04–2.16 (m, 1H), 2.38–2.50 (m, 1H), 2.56–2.67 (m, 2H), 2.79–2.89 (m, 2H), 7.29–7.36 (m, 3H), 7.41–7.43 (m, 1H). 13C NMR (CDCl3) 17.3, 34.8, 40.1, 124.2, 126.2, 128.4, 130.5, 135.2, 142.0.

1. customThe temperature was held between 25° and 35° by water bath
2. temperaturecooling
3. extractionThe mixture was extracted with hexane (3×100 mL)
4. washthe combined extracts were washed with water (3×75 mL)
5. dry with materialdried over anhydrous magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated

ORD record

ord-b3da49642a4b42d7a4485fadcd6467ef

Source dataset

uspto-grants-2006_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07132551B2