The selective reduction of α,β-unsaturatedcarbonyl compounds was achieved to produce saturatedcarbonyl compounds with aqueous HI solution. The introduction of aryl group at α or β position was ef...
用 HI 水溶液选择性还原 α,β-不饱和羰基化合物以制备饱和羰基化合物。在α或β位引入芳基是有效的...
Domino Meyer-Schuster/Arylation Reaction of Alkynols or Alkynyl Hydroperoxides with Diazonium Salts Promoted by Visible Light under Dual Gold and Ruthenium Catalysis
作者:Benito Alcaide、Pedro Almendros、Eduardo Busto、Amparo Luna
DOI:10.1002/adsc.201600158
日期:2016.4.28
alkynyl hydroperoxides using equimolar amounts of diazoniumsalts at room temperature has been achieved through application of a gold/photoredox dual catalytic system. The excess of external reagents (oxidant or base) and high temperatures required by previous arylative Meyer–Schuster rearrangement protocols are avoided by exploitation of a visiblelight‐mediated process.
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.
Heterogeneous gold-catalyzed oxidative cross-coupling of propargylic acetates with arylboronic acids leading to (E)-α-arylenones
作者:Dayi Liu、Quan Nie、Rongli Zhang、Mingzhong Cai
DOI:10.1016/j.tetlet.2018.11.053
日期:2019.1
efficient heterogeneous gold-catalyzed oxidative cross-coupling of propargylic acetates with arylboronic acids has been developed that proceeds smoothly in the presence of Selectfluor and provides a general and powerful tool for the preparation of various valuable α-arylenones with moderate to good yields, excellent E-selectivity, and recyclability of the gold catalyst. The reaction is the first example
Nitrone Cycloadditions to 1,2-Diphenylcyclopropenes and Subsequent Transformations of the Isoxazolidine Cycloadducts
作者:Vyacheslav V. Diev、Oksana N. Stetsenko、Tran Q. Tung、Jürgen Kopf、Rafael R. Kostikov、Alexander P. Molchanov
DOI:10.1021/jo702379d
日期:2008.3.1
occurs with the formation of expected “normal” cycloadducts (with N-methylnitrones) and products of their subsequent transformations. Among them are corresponding α-acetophenyl aziridines and tetra (or penta) -arylpyrroles. Aziridines and the normal cycloadducts can be also thermally converted to such arylpyrroles with moderate to good yields. Substitution at the C3 position of cyclopropenes by an electron