Double Couplings of Dibromothiophenes Using Boronic Acids and Boronates
作者:Scott Handy、Samantha Varello
DOI:10.1055/s-0028-1083262
日期:2009.1
couplings work well for 2,4-dibromothiophene, but are much more sensitive to steric effects in the case of 2,3-dibromothiophene. By using the recently reported potassium borates, though, good yields for both dibromothiophene isomers can be achieved. Suzuki couplings - regioselectivity - heteroaromatics - thiophenes - cross-coupling reactions - palladium catalysis