1,4-Dibromobenzene → HCID 131714345, compound

Participants

Reaction Steps

21.0 g of methylphenyldiethoxysilane, 2.43 g of magnesium and 100 ml of tetrahydrofuran were charged into a 500-ml, three-necked flask provided with a stirrer, a cooler, and a dropping furnel and stirred in a nitrogen gas stream, while 100 ml of a tetrahydrofuran solution containing 11.8 g of p-dibromobenzene was dropwise added thereto from the dropping furnnal over about 3 hours. After the dropwise addition, the mixture was further stirred and refluxed for about 5 hours. After the refluxing, the resulting polymer was separated by filtration, and the solvent was removed therefrom by distillation. The residues were subjected to distillation under reduced pressure, whereby 15 g of p-bis(methylphenylethoxysilyl)benzene was obtained (yield: 78%, boiling point: 213°-215° C./3 mmHg).

Provenance & Evidence