反应详情

温度

-78 °C

25.9 ml (44 mmol) of a 1.7 M solution of tert-butyllithium in n-hexane was added dropwise to a well-stirred solution of 2.36 g (10 mmol) of 1,4-dibromobenzene in 200 ml of absolute THF which had been cooled to −78° C. over a period of 20 minutes at such a rate that the temperature of the reaction mixture did not exceed −65° C. The solution was stirred for another 1 hour at −78° C. and a solution of 6.44 g (24 mmol) of fluorodimesitylborane in 50 ml of absolute THF was then added dropwise over a period of 20 minutes at such a rate that the temperature of the reaction mixture did not exceed −65° C.

1. customdid not exceed −65° C
2. customdid not exceed −65° C.