2,3-dihydro-1H-xanthene | 58282-24-9

• 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: 2,3-dihydro-1H-xanthene
• 英文别名: 1,2-Dihydro-3h-xanthene；2,3-dihydro-1H-xanthene
• CAS: 58282-24-9
• 化学式: C₁₃H₁₂O
• 分子量: 184.238
• InChiKey: LRROUNXVFBMMOT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,3-dihydro-1H-xanthene 以68%的产率得到
  参考文献：
  名称：

  KABBE H.-J; HEITZER H., J. LIEBIGS ANN. CHEM. , 1976, NO 3, 511-518

  摘要：

  DOI：
• 作为产物：
  描述：

  1-吡咯烷-1-环己烯 在 乙酸酐 作用下， 以 甲苯 、 乙腈 为溶剂， 生成 2,3-dihydro-1H-xanthene
  参考文献：
  名称：

  On the Formation and Reactivity of 2-Alkylidene-benzopyrans and their 2-amino-5,6-benzo-2H-pyran precursors

  摘要：

  A series of 2-amino-substituted 5,6-benzo-2H-pyrans 14, 2-alkylidene-5,6-benzo-2H-pyrans 15, and their dimers 17 are obtained, depending on the condition used, by the reaction of 2-hydroxy-benzaldehydes I with enamines 9 derived of (cyclo)aliphatic ketones. Compounds 14, 15, and 17 can be transformed into 2-alkyl-benzopyrylium salts 16 or 2-[1-(2-hydroxyphenyl)-alken-2-yl]-benzopyrylium salts 23 by treatment with mineral acids. With aromatic aldehydes or the Vilsmeier reagent the compounds 14, 15, or 17 are transformed into deeply colored 2-(aryl-alkenyl)-benzopyrylium perchlorates 25 or 2-(2-dialkylamino)-alkenyl-benzopyrylium salts 26, respectively.

  DOI：

  10.1002/prac.19983400106

文献信息

• On the Formation and Reactivity of 2-Alkylidene-benzopyrans and their 2-amino-5,6-benzo-2H-pyran precursors
  作者：Andreas Kanitz、Horst Hartmann、Peter Czerney

  DOI：10.1002/prac.19983400106

  日期：——

  A series of 2-amino-substituted 5,6-benzo-2H-pyrans 14, 2-alkylidene-5,6-benzo-2H-pyrans 15, and their dimers 17 are obtained, depending on the condition used, by the reaction of 2-hydroxy-benzaldehydes I with enamines 9 derived of (cyclo)aliphatic ketones. Compounds 14, 15, and 17 can be transformed into 2-alkyl-benzopyrylium salts 16 or 2-[1-(2-hydroxyphenyl)-alken-2-yl]-benzopyrylium salts 23 by treatment with mineral acids. With aromatic aldehydes or the Vilsmeier reagent the compounds 14, 15, or 17 are transformed into deeply colored 2-(aryl-alkenyl)-benzopyrylium perchlorates 25 or 2-(2-dialkylamino)-alkenyl-benzopyrylium salts 26, respectively.
• KABBE H.-J; HEITZER H., J. LIEBIGS ANN. CHEM. <JLAC-BF>, 1976, NO 3, 511-518
  作者：KABBE H.-J、 HEITZER H.

  DOI：——

  日期：——