反应详情

To a solution of 1-iodo-3-bromobenzene (6.0 g, 21.2 mmol) in 100 mL of benzene at room temperature under argon, 1.2 g (1.06 mmol) of tetrakis(triphenylphosphine)palladium(0) was added and to this mixture a 2M solution in tetrahydrofuran of isobutyl magnesium bromide (10.6 mL) was added dropwise over 15 minutes. The mixture was stirred 2 hours, diluted with 100 mL of water, the organic layer was separated and the aqueous layer was extracted with 2×100 mL of ether. The combined organic extracts were dried and evaporated to provide 4.3 g of a colorless liquid, which upon distillation in vacuo provided 1.95 g (43%) of compound A as a colorless liquid; b.p. 124°-125° C. (15-20 mm).

1. additionwas added dropwise over 15 minutes
2. customthe organic layer was separated
3. extractionthe aqueous layer was extracted with 2×100 mL of ether
4. customThe combined organic extracts were dried
5. customevaporated