i-PrI acceleration of Negishi cross-coupling reactions.
The Negishi cross-coupling of arylzinc reagents with various bromoanilines is accelerated by the presence of i-PrI (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.
Kienle
Marcel
M
Department Chemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 München, Germany.
Knochel
Paul
P