7156-35-6Relevant academic research and scientific papers
Aerobic Copper-Catalyzed Intramolecular Cascade Oxidative Isomerization/[4+4] Cyclization of 2,2′-Disubstituted Stilbenes
Zhang, Zhi-Jun,Zhou, Xu,Li, Dashan,Chen, Yang,Xiao, Wen-Wen,Li, Rong-Tao,Shao, Li-Dong
, p. 7609 - 7624 (2021/05/29)
An aerobic copper-catalyzed cascade oxidative isomerization/[4+4] cyclization of 2,2′-disubstituted stilbenes is described. Under the mild CuCl/DBED/air catalytic system, various 5,10-heteroatom-containing tetrahydroindeno[2,1-a]indenes were efficiently p
Copper-catalyzed double intramolecular ullmann coupling for the synthesis of diastereomerically and enantiomerically pure 4b,9b-dihydrobenzofuro[3,2-b]benzofurans
Imrich, Hans-Georg,Conrad, Jürgen,Beifuss, Uwe
, p. 7718 - 7734 (2015/12/31)
The copper-catalyzed double intramolecular Ullmann coupling of syn-1,2-bis(2-bromoaryl)ethane-1,2-diols with catalytic amounts of CuII oxinate as the copper source, K3PO4 as a base, and KI as a reductant in aqueous acetoni
Reduction of o-Hydroxybenzaldehydes by Aqueous Titanium Trichloride. A New Route to 2-(Benzofuran-2-yl)phenols
Clerici, Angelo,Porta, Ombretta,Arnone, Alberto
, p. 1240 - 1248 (2007/10/02)
Reduction of o-hydroxybenzaldehydes 1a-k by aqueous titanium trichloride is a new simple way to the synthesis of the title compounds 2a-k.The temperature at which the reduction occurs (50 or 80 deg C) is related to the nature and position of the R group i
SYNTHESIS OF BENZOFUROBENZOFURAN AND BENZOFUROBENZOFURAN
Tolmach, E. L.,Kudryavtsev, A. B.,Zheltov, A. Ya.,Stepanov, B. I.
, p. 1594 - 1601 (2007/10/02)
A convenient method was developed for the synthesis of benzofurobenzofuran and benzofurobenzofuran by the structurally directed heterocyclization of hydrosalicyloin to 4b,9b-dihydrobenzofurobenzofuran or 5a,10b-dihydrobenzofurobenzofuran and their subsequent homolytic bromination and dehydrobromination in the presence of a base.The stuctures of the cyclization products are determined by the nature of the dehydrating agent.The possible mechanism of the cyclization of hydrosalicyloin in the presence of acids is disscused.
