Through the use of Pd(OAc)(2) and the sterically hindered imidazolium salt
5 (IPr . HCl) as the pre-catalyst mixture, aryl chlorides undergo efficient
cross coupling reactions with 9-R-9-BBN derivatives (R = alkyl, allyl. alk
ynyl, cyclopropyl) in the presence of KOMe as the base. This procedure is e
asily scaleable and applies to electron poor and electron rich substrates w
ith similar ease.