| 1373521-90-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• CAS: 1373521-90-4
• 化学式: C₁₅H₁₈O₅
• 分子量: 278.305
• InChiKey: GHRIPZTYXHJQKH-PGUXBMHVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  20.0
• 可旋转键数：
  1.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  61.83
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为产物：
  描述：

  (2R,4R)-pentanediol 在 吡啶 、 tetrakis(trifluoroacetato)rhodium(II) 、 偶氮二甲酸二异丙酯 、 4-乙酰氨基苯磺酰叠氮 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 三苯基膦 、 苯甲酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 为溶剂， 反应 144.0h， 生成 methyl (2S,4S)-2,4-dimethyl-6-oxo-2,3,4,7-tetrahydro-1,5-benzodioxonine-7-carboxylate 、
  参考文献：
  名称：

  Remote stereocontrol of intramolecular rhodium carbene addition driven by a small and flexible chiral 2,4-pentanediol tether

  摘要：

  Intramolecular rhodium carbenoid additions were studied using 2,4-pentanidiol as a chiral tether between a diazo group, a precursor of the carbene, and an aromatic group to be reacted with the carbene. The reaction was designed to perform the addition at a remote position, conserving the original high stereoselectivity appeared at additions near the tether, in addition to high regioselectivity and sufficient reaction efficiency. Substitution on the near reaction sites, the carbene carbon and aromatic group, in the reactant was effective to relegate the reaction site to a remote position. In the present study, two remote reactions, one dealing with C-H insertion and the other classified in Buchner reaction, were found to give sole products in high yields. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.03.009