Brønsted Acid Catalyzed α-Alkylation of Aldehydes with Diaryl Methyl Alcohols
作者:Chong Xing、Hui Sun、Junmin Zhang、Guohui Li、Yonggui Robin Chi
DOI:10.1002/chem.201102623
日期:2011.10.24
A proton does the two jobs: Brønsted acids alone catalyze the α‐alkylation of aldehydes with diaryl alcohols. In this type of transformation, the acid‐catalysis approach offers a broader substrate scope compared to the previously used enamine catalysis methods. The acid plays two important roles: one is to mediate the alcohol dehydration for carbocation formation; the other is to accelerate the rate‐determining