Samarium diiodide / hexamethylphosphoramide promoted dimerization of benzaldehydes
作者:Jiann-Shyng Shiue、Chun-Cheng Lin、Jim-Min Fang
DOI:10.1016/s0040-4039(00)60581-6
日期:1993.1
Benzaldehyde, its ortho- and meta-substituted derivatives and acetophenone underwent dimerization reactions on treatment with samarium(II) iodide in the presence of HMPA. Intramolecular phenyl-carbonyl coupling reactions were similarly carried out.
Reductive Coupling of Aromatic Aldehydes and Ketones Under Electrochemical Conditions
作者:Toreshettahally R Swaroop、Zi-Qiang Wang、Qian-Yu Li、Heng Shan Wang
DOI:10.1149/1945-7111/ab72ed
日期:——
Reductive coupling of o-substituted carbonyl compounds and m-substituted carbonyl compounds by the direct transfer of electron to carbonyl group respectively gave 1-(4-(1-hydroxy-1-phenylethyl/methyl)phenyl)ethanones/methanones and 2,3-bis(3-substitutedphenyl)butane/ethane-2,3-diols. 4-Methoxyacetophenone surprisingly gave 4-methoxybenzoic acid as oxidation product. Even acetophenone conjugated with alkyne group afforded interesting reductive addition product. Finally, imine also furnished reductively coupled diamino compound. Probable mechanisms for the formation of products is proposed. (c) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.