Highly Enantioselective Intermolecular Stetter Reaction of Simple Acrylates: Synthesis of α-Chiral γ-Ketoesters
作者:Nathalie E. Wurz、Constantin G. Daniliuc、Frank Glorius
DOI:10.1002/chem.201202432
日期:2012.12.14
Simple Stetter: A novel N‐heterocyclic carbene (NHC) was designed by combining an electron‐rich 2,6‐dimethoxy substituent and an underestimated yet promising chiral motif. With this NHC in hand, a highlyenantioselectiveintermolecularStetterreaction of simple acrylates was developed, yielding versatile α‐chiral γ‐ketoesters. This represents the first catalytic asymmetric route towards these valuable
Magnesium-Promoted Reductive Carboxylation of Aryl Vinyl Ketones: Synthesis of γ-Keto Carboxylic Acids
作者:Suhua Zheng、Tianyuan Zhang、Hirofumi Maekawa
DOI:10.1021/acs.joc.2c00557
日期:2022.6.3
Direct reductive carboxylation of easily prepared aryl vinylketones under the atmosphere of carbon dioxide led to the selective formation of γ-keto carboxylic acids in 38–86% yields. The reaction is characterized by the carbon–carbon bond formation of carbon dioxide at the β-position of enone, with the use of magnesium turnings that can be easily handled as the reducing agent and the eco-friendly
ARYL γ-KETOESTERS AS PRECURSORS FOR γ-BUTYROLACTONES IN SAMARIUM(II) IODIDE-MEDIATED REACTIONS
作者:D. Bradley G. Williams、Kevin Blann、Cedric W. Holzapfel
DOI:10.1081/scc-100000200
日期:2001.1
Various aryl gamma -ketoesters were transformed into the corresponding substituted gamma -lactones in good yield upon reaction with SmI2.
ARYL γ-KETOESTERS AS PRECURSORS FOR γ-BUTYROLACTONE DIMERS IN SAMARIUM(II) IODIDE-MEDIATED REACTIONS
作者:D. Bradley G. Williams、Kevin Blann、Judy Caddy、Cedric W. Holzapfel
DOI:10.1081/scc-120015393
日期:2002.1.1
Various aryl gamma-ketoesters were transformed into corresponding substituted gamma-lactone dimers in good yield upon reaction with SmI2.
Cu(II)-Catalyzed Enantioselective β-Boration of β-Trifluoromethyl, β,β-Disubstituted Enones and Esters: Construction of a CF<sub>3</sub>- and Boron-Containing Quaternary Stereocenter
作者:Bing Liu、Hai-Hong Wu、Junliang Zhang
DOI:10.1021/acscatal.8b02543
日期:2018.9.7
A highly enantioselective Cu(II)-catalyzed borylative reaction of β-trifluoromethyl β,β-disubstituted enones was developed, which provide a facile access to a variety of chiral alkylboronic esters with a quaternary stereocenter including both a trifluoromethyl group and a boron group. Meanwhile, CF3-contained tertiary alcohol derivatives were obtained in high yield with the maintained ee value via