Benzyl and allyl ethers have been cleaved readily on treatment with AlCl3 and N,N-dimethylaniline to give parent alcohols in high yields. Comparisons of N,N-dimethylaniline and anisole are also described.
An Efficient Radical Procedure for the Halogenation and Chalcogenation ofB-Alkylcatecholboranes
作者:Arnaud-Pierre Schaffner、Florian Montermini、Davide Pozzi、Vincent Darmency、Eoin Martin Scanlan、Philippe Renaud
DOI:10.1002/adsc.200700531
日期:2008.5.5
hydroboration of alkenes with catecholborane. The conversion of the intermediate B-alkylcatecholboranes to the corresponding halides, sulfides and selenides is based on a common process, i.e., generation of a radical from the alkylborane followed by abstraction of a heteroatom from an aromatic sulfonyl reagent. The efficiency of these radical reactions is remarkable. The mildness of the reaction conditions is well
Selective alkyl ether cleavage by cationic bis(phosphine)iridium complexes
作者:Caleb A. H. Jones、Nathan D. Schley
DOI:10.1039/c8ob02298d
日期:——
conversion of alkyl ethers to silylethers via C–O bond cleavage. The previously-reported cationic pincer-supported iridium complex for this transformation suffers from poor selectivity with regard to monodealkylation of substrate ethers. We demonstrate that a simple non-pincer iridium complex offers improved selectivity and is capable of benzylic ether cleavage in the presence of reductively-labile