Dabco as an inexpensive and highly efficient ligand for palladium-catalyzed Suzuki-Miyaura cross-coupling reaction.
An inexpensive and highly efficient Pd(OAc)(2)/Dabco catalytic system has been developed for the cross-coupling of aryl halides with arylboronic acids. A combination of Pd(OAc)(2) and Dabco (triethylenediamine) was observed to form an excellent catalyst, which affords high TONs (turnover numbers; TONs up to 950 000 for the reaction of PhI and p-chlorophenylboronic acid) for Suzuki-Miyaura cross-coupling of various aryl iodides and bromides with arylboronic acids. [reaction: see text]
Li
Jin-Heng
JH
Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China. jhli@mail.hunnu.edu.cn
Liu
Wen-Jie
WJ