Dibenzofuran → HCID 178506663, compound

Into a solution of dibenzo[b,d]furan (4.98 g, 29.6 mmol) in ether (50 mL) at −78° C. was added n-butyllithium solution in hexane (2.5 M, 9.48 mL, 23.70 mmol) dropwise and the solution was allowed to warm to room temperature and stirred for 20 h to yield a dibenzo[b,d]furan-4-yl lithium solution. Into a solution of 1,3-dibromobenzene (2.56 mL, 21.20 mmol) in ether (50 mL) was added n-butyllithium solution in hexane (2.5 M, 9.48 mL, 23.70 mmol) dropwise at −78° C. The reaction solution was stirred at this temperature for 3.5 h before adding into a solution of dichlorodiphenylsilane (4.88 mL, 23.70 mmol) in ether (50.0 mL) at −78° C. The resultant reaction solution was stirred at this temperature for 2 h before the dibenzo[b,d]furan-4-yl lithium solution prepared above was introduced dropwise. The reaction mixture was allowed to slowly warm to room temperature overnight at which time it was quenched with water, extracted with ether, and dried over Na2SO4. Upon filtration and evaporation of the solvent, the residue was purified by column chromatography on silica gel with hexane/DCM (9/1, v/v) as eluent to yield (3-bromophenyl)(dibenzo[b,d]furan-4-yl)diphenylsilane (6.2 g, 52%) as a white powder.

ORD record

ord-9affebd0850d428792fe60aa9fb476be

Source dataset

uspto-grants-2013_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08409729B2