反应详情

To a solution of 14.5 g (55.4 mmol) of 5-tert-butyl-2-methyl-7-phenyl-1H-indene in 400 ml of ether cooled to −78° C., 22.2 ml (55.5 mmol) of 2.5 M nBuLi in hexanes was added. This mixture was stirred overnight at room temperature, then cooled to −78° C., and 200 mg (2.23 mmol) of CuCN was added. The resulting mixture was stirred for 30 min at −20° C., then cooled to −78° C., and a solution of 21.2 g (55.4 mmol) of (6-tert-butyl-5-methoxy-2-methyl-4-phenyl-1H-inden-1-yl)(chloro)dimethylsilane in 200 ml of ether was added. This mixture was stirred overnight at room temperature, then 1 ml of water was added. The obtained mixture was passed through a short layer of silica gel 60 (40-63 um), the elute was evaporated to dryness. The product was isolated by flash-chromatography on silica gel 60 (40-63 um; eluent: hexanes-dichloromethane=10:1, vol., then 3:1, vol.). This procedure gave 24.5 g (72%) of yellowish glassy solid.

1. temperaturecooled to −78° C.
2. stirringThe resulting mixture was stirred for 30 min at −20° C.
3. temperaturecooled to −78° C.
4. stirringThis mixture was stirred overnight at room temperature
5. customthe elute was evaporated to dryness
6. customThe product was isolated by flash-chromatography on silica gel 60 (40-63 um