反应详情

Into a solution of dibenzo[b,d]thiophene (4.80 g, 26.1 mmol) in ether (70 mL) was added n-butyllithium solution in hexane (2.5 M, 9.48 mL, 23.70 mmol) dropwise at −78° C., and the solution was allowed to warm to room temperature and then heated at 35° C. oil bath for 2 h to yield a red solution of dibenzo[b,d]thiophen-4-yl lithium.

1. temperatureheated at 35° C. oil bath for 2 h