Browning; Woodrow; Adams, Journal of the American Chemical Society, 1930, vol. 52, p. 1282
作者:Browning、Woodrow、Adams
DOI:——
日期:——
Electrophilic Rearrangements of Chiral Amides: A Traceless Asymmetric α-Allylation
作者:Bo Peng、Danny Geerdink、Nuno Maulide
DOI:10.1021/ja408856p
日期:2013.10.9
A one-pot protocol for the asymmetric alpha-allylation reaction is reported relying on a key efficient asymmetric Claisen rearrangement, triggered by electrophilic activation of chiral pseudoephedrine amides. Subsequent reduction or hydrolysis of the resulting iminium ions provides highly enantioenriched alpha-allylic aldehydes or carboxylic acids in a traceless manner. Compared to traditional alternatives which make use of strongly basic conditions, the work presented herein displays unprecedented functional group tolerance.
Visible Light-Promoted Decarboxylative Di- and Trifluoromethylthiolation of Alkyl Carboxylic Acids
decarboxylative di‐ and trifluoromethylthiolation of alkyl carboxylic acids promoted by visible light. This approach enables the synthesis of biologically relevant alkyl SCF2H and SCF3 compounds from cheap and abundant carboxylic acids. The method is operationallysimple, using irradiation from household light sources, and its mild reaction conditions make it tolerant of a range of functional groups