A novel enantioselective protonation protocol that is triggered by reductive cross coupling of olefins is reported. When under cooperative photoredox and chiral hydrogen-bonding catalytic conditions and using a terminal reductant, various α-branched vinylketones with diverse vinylazaarenes could provide important enantioenriched azaarene derivatives containing tertiary stereocenters at their remote
Formal Enone α-Arylation via I(III)-Mediated Aryl Migration/Elimination
作者:Bruna S. Martins、Daniel Kaiser、Adriano Bauer、Irmgard Tiefenbrunner、Nuno Maulide
DOI:10.1021/acs.orglett.1c00251
日期:2021.3.19
A formal enone α-arylation is described. This metal-free transformation relies on the I(III)-mediated skeletal reorganization of silyl enol ethers and features mild conditions, good yields, and high stereoselectivities for β-substituted enones.
hydroacylation of α-substituted α,β-unsaturated carbonyl compoundsthrough direct hydrogen atom transfer in the presence of the photocatalyst anthraquinone and chiral N,N′-dioxide/metal complexes. This mild, robust method provided a facile access to a wide array of chiral ketones with α-tertiary stereocenters by using the readily available aldehyde as a hydroacylation reagent. Based on the spectroscopy experiments
Synthesis of 2-alkyl (and aryl)-1-aryl-2-propen-1-ones via m-CPBA mediated oxidation of γ-(benzotriazol-1-yl)allylic selenides
作者:Taehoon Kim、Kyongtae Kim
DOI:10.1016/s0040-4039(02)00388-x
日期:2002.4
Treatment of 2-alkyl (and aryl)-3-aryl-3-(benotriazol-1-yl)allylic selenides with m-CPBA (1 equiv.) for 10 min in Ch(2)Cl(2) at rt gave 2-alkyl (and aryl)-1-aryl-2-propen-1-ones in excellent yields. (C) 2002 Published by Elsevier Science Ltd.
AURICH, HANS GUNTER;BUBENHEIM, OTTO;KESSLER, WILFRIED;MOGENDORF, KLAUS-DI+, J. ORG. CHEM., 53,(1988) N 21, C. 4997-5004
作者:AURICH, HANS GUNTER、BUBENHEIM, OTTO、KESSLER, WILFRIED、MOGENDORF, KLAUS-DI+