Photochemistry of some deoxybenzoins in micellar solutions. Cage effects, isotope effects, and magnetic field effects
作者:Nicholas J. Turro、Jochen Mattay
DOI:10.1021/ja00404a037
日期:1981.7
investigated. It was found that the extent of cage disproprotionation to yield benzaldehydes 6 and ..cap alpha..-methylstyrenes 7 is enhanced by a factor of about 10 compared to the photolyses in homogeneous organic solvents. The advantage of using micelles rather than homogeneous solutions to enhance the magnitude of magnetic isotope and magnetic field effects on cage disproportionation is demonstrated. The
Asymmetric C–H Dehydrogenative Allylic Alkylation by Ternary Photoredox-Cobalt-Chiral Primary Amine Catalysis under Visible Light
作者:Zongbin Jia、Long Zhang、Sanzhong Luo
DOI:10.1021/jacs.2c03299
日期:2022.6.22
We report herein an asymmetric C–H dehydrogenative allylic alkylation by a synergistic catalytic system involving a chiral primary amine, a photoredox catalyst, and a cobaloxime cocatalyst. The ternary catalytic system enables the coupling of β-ketocarbonyls and olefins with good yields and high enantioselectivities. Mechanism studies disclosed a cooperative radical addition process with a chiral α-imino
A Palladium-Catalyzed Dehydrogenative Diamination of Terminal Olefins
作者:Bin Wang、Haifeng Du、Yian Shi
DOI:10.1002/anie.200803184
日期:2008.10.13
HORNBACK J. M.; PROEHL G. S., J. AMER. CHEM. SOC., 1979, 101, NO 24, 7367-7373
作者:HORNBACK J. M.、 PROEHL G. S.
DOI:——
日期:——
Iodine(III)-Mediated Intermolecular Allylic Amination under Metal-Free Conditions
作者:José A. Souto、Debora Zian、Kilian Muñiz
DOI:10.1021/ja3013193
日期:2012.5.2
A new approach to direct intermolecular allylic amination has been developed using metal-free conditions at roomtemperature. The reaction employs a hypervalent iodine(III) reagent as an oxidant and bistosylimide as a nitrogen source. A series of different allylic aminations are presented with up to a 99% yield. Mechanistic studies including isotope labeling and Hammett correlation suggest that depending