(1R,3E,5R)-1,7-diphenylhept-3-ene-1,5-diol | 1274953-72-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二芳基庚烷
• 英文名称: (1R,3E,5R)-1,7-diphenylhept-3-ene-1,5-diol
• 英文别名: (E,1R,5R)-1,7-diphenylhept-3-ene-1,5-diol
• CAS: 1274953-72-8
• 化学式: C₁₉H₂₂O₂
• 分子量: 282.382
• InChiKey: KVQGLBHHNYZHJM-APAVCVACSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  21
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  在 potassium dihydrogenphosphate 、 sodium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 甲苯 为溶剂， 生成 (1R,3E,5R)-1,7-diphenylhept-3-ene-1,5-diol
  参考文献：
  名称：

  Enantio- and Diastereoselective Synthesis of (E)-1,5-syn-Diols: Application to the Synthesis of the C(23)−C(40) Fragment of Tetrafibricin

  摘要：

  A highly stereoselective synthesis of (E)-1,5-syn-diols 6 Is described. The kinetically controlled hydroboration of allenyltrifluoroborate 8 with Soderquist borane 2 provides the (Z)-allylic trifluoroborate 9, which undergoes sequential allylboration with two different aldehydes to provide (E)-1,5-syn-diols 6 In 72-98% yields with > 95% ee and > 20:1 dr. Application of this method to the synthesis of the tetraflbricin C(23)-C(40) fragment 19 is described.

  DOI：

  10.1021/ol2003836

文献信息

• Development of a double allylboration reagent targeting 1,5-syn-(E)-diols: application to the synthesis of the C(23)–C(40) fragment of tetrafibricin
  作者：Philippe Nuhant、Jeremy Kister、Ricardo Lira、Achim Sorg、William R. Roush

  DOI：10.1016/j.tet.2011.06.008

  日期：2011.9

  Interest in the synthesis of the C(23) C(40) fragment 2 of tetrafibricin prompted us to develop a new method for the synthesis of 1,5-syn-(E)-diols. Toward this end, the kinetically controlled hydroboration of allenes 6, 33, ent-39, 42, and 45 with the Soderquist borane 25R were studied. Tetrabutylammonium allenyltrifluoroborate 45 gave superior results and was utilized in a double allylboration sequence with two different aldehydes to provide the targeted 1,5-syn-(E)-diols in generally high yields (72-98%), and with high enantioselectivity (>95% ee), diastereoselectivity (dr >20:1), and (E)/(Z) selectivity (>20:1). This new method was applied to the synthesis of the C(23) C(40) fragment 2 of tetrafibricin. (C) 2011 Elsevier Ltd. All rights reserved.