Nickel-Catalyzed Reductive Benzylation of Aldehydes with Benzyl Halides and Pseudohalides
作者:Farhad Panahi、Marzieh Bahmani、Nasser Iranpoor
DOI:10.1002/adsc.201400970
日期:2015.4.13
benzylation of aromatic and aliphatic aldehydes with benzylic halides is reported using a nickel/zinc catalyst system. In addition to benzylic halides, the first report on the addition of benzylic triflates, acetates, tosylates and tritylates to aldehydes is also presented. By this new method a range of alcohols was synthesized efficiently from aldehydes and benzylic substrates at room temperature in moderate
zincs are formed in acetonitrile upon reaction of the bromide derivatives, in good yields, using a catalytic electrogenerated zinc species associated with massive zinc. In the presence of chlorotrimethylsilane, these organozincs react instantaneously with functionalized aromatic aldehydes.