[reaction: see text] Electrochemical arylation of arenecarboxaldehydes using an iron sacrificial anode in the presence of chromium and nickel catalysts afforded the corresponding arylated secondary alcohols in moderate to good yields. The chromium and nickel salts as catalysts are obtained by oxidation of a stainless steel rod during a preelectrolysis in 7% and 3%, respectively. The process was also
Electrochemical arylation of arenecarboxaldehydes using a stainless steel sacrificial anode in the presence of Ni catalysts afforded the corresponding arylated secondary alcohols in good yields. (C) 1999 Elsevier Science Ltd. All rights reserved.
Hypophosphorous acid–iodine: a novel reducing system. Part 2: Reduction of benzhydrols to diarylmethylene derivatives
作者:Paul E Gordon、Albert J Fry
DOI:10.1016/s0040-4039(00)02159-6
日期:2001.1
A mixture of hypophosphorousacid (H3PO2) and iodine in acetic acid reduces a variety of substituted benzhydrols to the corresponding methylene derivatives in very high yields. The active reducing agent is hydrogen iodide generated by reactionbetweeniodine and hypophosphorousacid.
次磷酸(H 3 PO 2)和碘在乙酸中的混合物可以以很高的产率将各种取代的苯氢酚还原为相应的亚甲基衍生物。活性还原剂是碘与次磷酸反应生成的碘化氢。
Traceless Directing Group for Stereospecific Nickel-Catalyzed Alkyl−Alkyl Cross-Coupling Reactions
作者:Margaret A. Greene、Ivelina M. Yonova、Florence J. Williams、Elizabeth R. Jarvo
DOI:10.1021/ol300891k
日期:2012.8.17
Stereospecific nickel-catalyzed cross-couplingreactions of benzylic 2-methoxyethyl ethers are reported for the preparation of enantioenriched 1,1-diarylethanes. The 2-methoxyethyl ether serves as a traceless directing group that accelerates cross-coupling. Chelation of magnesium ions is proposed to activate the benzylic C–O bond for oxidative addition.