CAS: 33390-41-9; 1,3,5-Trihydroxy-2,4-Bis(3-Methylbut-2-En-1-yl)-9H-Xanthen-9-One

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1,3,5-trihydroxy-9H-xanthen-9-one prenyl bromide 2,3-dimethoxybenzoic acid 1,3,5-trimethoxy-9H-xanthen-9-one

📜2-Hydroxy-2',3,4',6'-Tetramethoxybenzophenone置于吡啶,氢氧化钾,四甲基氢氧化铵,氢碘酸,苯酚体系中,化学反应 44.0H,反应生成1,3,5-三羟基-2,4-双(3-甲基-2-丁烯基)氧杂蒽酮
参考文献:Synthesis Of 2-Hydroxy-3-Methylbut-3-Enyl Substituted Coumarins And Xanthones As Natural Products. Application Of The Schenck Ene Reaction Of Singlet Oxygen With Ortho-Prenylphenol Precursors
标题:Synthesis Of 2-Hydroxy-3-Methylbut-3-Enyl Substituted Coumarins And Xanthones As Natural Products. Application Of The Schenck Ene Reaction Of Singlet Oxygen With Ortho-Prenylphenol Precursors
摘要:Application Of Our Original Photooxidation-Reduction Methodology To Prenylated Dihydroxycoumarin And Trihydroxyxanthone Compounds Led To The Corresponding Ortho-(2-Hydroxy-3-Methylbut-3-Enyl)Phenol Derivatives With Yields Ranging From 8 To 65%. In Most Of The Reported Experiments,The Oxidation Products Distribution,After The Photooxygenation Step,Was Controlled By The Competition Between The Large Group Effect And The Stabilising Phenolic Assistance Effect. We Also Showed That Ortho-(3-Hydroxy-3-Methylbut-1-Enyl)Phenol Derivatives Could Be Considered As Biogenetic Precursors Of 2,2-Dimethylbenzopyranic Structures. (C) 2004 Elsevier Ltd. All Rights Reserved.
Doi:10.1016/j.Tet.2004.01.033