Synthetic, Structural and Vibrational Spectroscopic Studies in Bismuth(III) Halide/N,N′-Aromatic Bidentate Base Systems. IV. Bismuth(III) Halide/N,N′-Bidentate Ligand (1 : 1) Systems
Copper-Catalyzed Arylative Meyer-Schuster Rearrangement of Propargylic Alcohols to Complex Enones Using Diaryliodonium Salts
作者:Beatrice S. L. Collins、Marcos G. Suero、Matthew J. Gaunt
DOI:10.1002/anie.201301529
日期:2013.5.27
Free choice: A copper‐catalyzed arylativeMeyer–Schusterrearrangement is described. The reaction is compatible with a range of substituted propargylicalcohols and diaryliodoniumsalts and delivers complex trisubstituted enone products selectively as the E isomers.
Cross-Coupling of Meyer–Schuster Intermediates under Dual Gold–Photoredox Catalysis
作者:Jiwon Um、Hokeun Yun、Seunghoon Shin
DOI:10.1021/acs.orglett.5b03531
日期:2016.2.5
Under dual gold/photoredoxcatalyticconditions, intermediates from the Meyer–Schuster rearrangement underwent an efficient cross-coupling with arene diazoniumsalts, leading to α-arylated enones. Diazoniumsalts assisted the dissociation of the propargyl hydroxyl group by forming alkoxydiazenes in the Meyer–Schuster rearrangement, and the coupling was proposed to proceed through an allenyl methyl
Copper-Catalyzed Chemo-, Regio-, and Stereoselective Multicomponent 1,2,3-Trifunctionalization of Internal Alkynes
作者:Weilin Wang、Youliang Wang
DOI:10.1021/acs.orglett.2c00499
日期:2022.3.11
diaryliodonium salts promoted multicomponent 1,2,3-trifunctionalization of alkynes, where both the acetylenic bond and the adjacent nonactivated propargylic C(sp3)–H bond were functionalized synergistically to generate α-arylated enones with high chemo-, regio-, and stereoselectivity. A broad spectrum of diaryliodonium salts and internal alkynes could be utilized in this protocol, and a diverse collection of
Catalyst‐Controlled Divergent Generations and Transformations of <i>α</i>‐Carbonyl Cations from Alkynes**
作者:Junrui Zhou、Weilin Wang、Fenfang Zuo、Shupeng Liu、Pathan Mosim Amin、Kangbao Zhong、Ruopeng Bai、Youliang Wang
DOI:10.1002/anie.202302545
日期:2023.12.4
Catalyst-controlled divergent generations of α-carbonyl cations from single alkyne functionalities and their divergent further transformations have been established. Broad spectrum of alkynes including aryl alkyne, ynamide, alkynyl ether, and alkynyl sulfide could be utilized. The intermediacy of α-carbonyl cations via the N−O bond cleavage was supported by DFT calculations in both catalytic systems