One-Pot Synthesis of 1,4-Diarylnaphthalenes via a Wittig-Horner Reaction/[4+2] Cycloaddition/Dehydrogenation Sequence
作者:Yanguang Wang、Zhengbo Chen、Wangge Shou
DOI:10.1055/s-0028-1083356
日期:2009.4
A one-pot synthesis of 1,4-diarylnaphthalenes from cinnamaldehydes, dimethyl benzylphosphonates, and benzenediazonium-2-carboxylate is described. The tandem process involves the Wittig-Hornerreaction of the cinnamaldehyde with the benzylphosphonate, [4+2] cycloaddition of the thus-formed diene with benzyne, and subsequent dehydrogenation. The procedure is general and efficient and the substrates are
Palladium-catalyzed oxidative homocoupling of potassium alkenyltrifluoroborates: synthesis of symmetrical 1,3-dienes
作者:Minéia Weber、Fateh V. Singh、Adriano S. Vieira、Hélio A. Stefani、Marcio W. Paixão
DOI:10.1016/j.tetlet.2009.04.127
日期:2009.7
Herein, we describe a convenient method for the synthesis of symmetrical 1,3-dienes employing an oxidative palladium-catalyzed homocoupling of potassium alkenyltrifluoroborates providing products in good yields relative to existing methodologies. This is the first report of a cross-dimerization of potassium alkenyltrifluoroborates. (C) 2009 Elsevier Ltd. All rights reserved.
CN115677446
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Transition-Metal-Free Continuous-Flow Synthesis of 2,5-Diaryl Furans: Access to Medicinal Building Blocks and Optoelectronic Materials
作者:Helena F. Grantham、Robert J. Lee、Grzegorz M. Wardas、Jai-Ram Mistry、Mark R. J. Elsegood、Iain A. Wright、Gareth J. Pritchard、Marc C. Kimber
DOI:10.1021/acs.joc.3c02237
日期:2024.1.5
synthetic approach to 2,5-diarylfurans delivers several important furanbuildingblocks used commonly in medicinal chemistry and as optoelectronic materials, including short-chain linearly conjugated furan oligomers. Consequently, we also complete a short study of the optical and electrochemical properties of a selection of these novel materials.