7,7'-dibromo-3,3,3',3'-tetramethyl-2,3,3',4'-tetrahydro-1H,1'H-[4,9'-bixanthene]-1,1'(2'H,9'H)-dione | 1246090-76-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 7,7'-dibromo-3,3,3',3'-tetramethyl-2,3,3',4'-tetrahydro-1H,1'H-[4,9'-bixanthene]-1,1'(2'H,9'H)-dione
• CAS: 1246090-76-5
• 化学式: C₃₀H₂₆Br₂O₄
• 分子量: 610.342
• InChiKey: JMXSZKQQEDAMOR-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  7-bromo-9-(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-enyl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-1-one 在 manganese(II) chloride tetrahydrate 作用下， 以 乙醇 为溶剂， 反应 96.0h， 以60%的产率得到7,7'-dibromo-3,3,3',3'-tetramethyl-2,3,3',4'-tetrahydro-1H,1'H-[4,9'-bixanthene]-1,1'(2'H,9'H)-dione
  参考文献：
  名称：

  A simple route for the synthesis of 3,3,3′,3′-tetramethyl-2,3,3′,4′-tetrahydro-1H,1′H-[4,9′-bixanthene]-1,1′(2′H,9′H)-dione and its derivatives catalyzed by Mn2+ and other transition metal cations

  摘要：

  A simple and efficient unusual coupling reaction of 9-(2-hydroxy-4,4-dimethy1-6-oxocyclohex-1-en-1yl)-3,3-dimethyl-2,3,4,9-tetrahydro-1H-xanthen-l-one and its derivatives was accomplished in the presence of Mn2+, Cu2+, Cd2+, Hg2+, Fe-3, or La3+. The structure elucidation was accomplished by IR, H-1 NMR, C-13 NMR, X-ray crystallography, UV-Visible and elemental analysis. A reaction mechanism is proposed. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2012.05.116