Stereospecific Construction of Chiral Tertiary and Quaternary Carbon by Nucleophilic Cyclopropanation with Bis(iodozincio)methane
作者:Kenichi Nomura、Seijiro Matsubara
DOI:10.1002/asia.200900289
日期:2010.1.4
The reaction of a ketone having a leaving group at the α‐position, such as α,β‐epoxy ketone or α‐sulfonyloxy ketone, with bis(iodozincio)methane affords a zinc alkoxide of cyclopropanol. The reaction proceeds by nucleophilic addition of the dizinc to the carbonyl group and a sequential intramolecular nucleophilic substitution of the introduced iodozinciomethyl group to the adjacent electrophilic carbon
Palladium-catalyzed oxidative annulation of <i>N</i>-(8-quinolinyl) aryl carboxamides with 1-aryl-2-tosyloxy ethanones
作者:Qinghuang Long、Keran Zou、Wanrong Dong、Dexun Xie、Delie An
DOI:10.1080/00397911.2021.1952433
日期:2021.9.17
Abstract A novel and facile palladium-catalyzedannulation reaction between N-(8-quinolinyl) aryl carboxamides and 1-aryl-2-tosyloxy ethanones was herein demonstrated. The practical transformation took place readily in the presence of Pd(OAc)2 without any ligands, offering the desired 3-aryl-2-(8-quinolinyl) isoquinolin-1(2H)-ones with good functional groups tolerance (29 examples) and high efficiencies
Catalytic, Asymmetric, Interrupted Feist–Bénary Reactions of α-Tosyloxyacetophenones
作者:Michael A. Calter、Alexander Korotkov
DOI:10.1021/ol2026697
日期:2011.12.2
A new variant of the Interrupted Feist-Benary (IFB) reaction uses alpha-tosyloxyacetophenones as electrophiles and proceeds in good yields and excellent enantioselectivities.