i-PrI Acceleration of Negishi Cross-Coupling Reactions
摘要:
The Negishi cross-coupling of arylzinc reagents with various bromoanilines is accelerated by the presence of i-Prl (1 equiv) and furnished the expected biaryls within 5-12 min reaction time at 25 degrees C. Arylzinc reagents can also be cross-coupled under these conditions with a range of aryl bromides bearing an enolizable ester or acidic benzylic protons.