反应详情

温度

-70 °C

A solution of lithium diisopropylamide 1.5M in tetrahydrofuran (6 ml, 9 mmol) was added dropwise to a stirred solution of 2,6-dicyanotoluene (0.85 g, 6 mmol) and tetramethyl ethylenediamine (1.04 g, 9 mmol) in dry tetrahydrofuran (50 ml), cooled to -70° C. under nitrogen. After one hour, 8-phenyloctyl iodide (2.15 g, 6.8 mmol) was added dropwise at -70° C. to the intense blue suspension, then allowed to warm to 0° C. over one hour. Water (100 ml) was added (cautiously at first) to the brown mixture and then extracted with diethyl ether (50 ml). The extracts were washed with 2M hydrochloric acid, dried, filtered and evaporated to a brown oil (2.67 g). Purified by chromatography on flash silica eluting with dichloromethane gave 2-(9-phenylnonyl)-1,3-benzenedicarbonitrile as an oil.

1. temperatureto warm to 0° C. over one hour
2. extractionextracted with diethyl ether (50 ml)
3. washThe extracts were washed with 2M hydrochloric acid
4. customdried
5. filtrationfiltered
6. customevaporated to a brown oil (2.67 g)
7. customPurified by chromatography on flash silica eluting with dichloromethane