neopentyl (2R*,3R*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate | 138964-18-8

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羟基酸及其衍生物
• 英文名称: neopentyl (2R*,3R*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate
• 英文别名: neopentyl (2R*,3S*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate
• CAS: 138964-18-8；138964-19-9
• 化学式: C₂₀H₃₄O₃Si
• 分子量: 350.574
• InChiKey: IBLLTKZMBRRHEB-SJORKVTESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.19
• 重原子数：
  24.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  46.53
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  neopentyl (2R*,3R*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate 在 sodium hydride 作用下， 以 四氢呋喃 为溶剂， 以87%的产率得到2,2-dimethylpropyl cinnamate
  参考文献：
  名称：

  Chemistry of silylketenes: a simple preparation of α-silyl-α-stannylacetic esters and their stereoselective Reformatsky-type reaction with aldehydes or aldimines

  摘要：

  Silylketenes 1a, b reacted smoothly with alkoxystannanes 3 to give the corresponding alpha-silyl-alpha-stannylacetates 4 almost quantitatively. Treatment of 4 with TiCl4 caused selective cleavage of the C-Sn bond to bring about Reformatsky-type reaction with aldehydes 6 giving beta-hydroxy-alpha-silyl esters 7. These two steps were carried out by one-pot operation, and variously substituted compounds 7 were obtained with high syn-selectivity (52-> 96% d.e.) in 41-89% yields. A similar one-pot procedure starting from la-c, 3, and aldimines 11 also provided the corresponding beta-amino-alpha-silyl esters 12 with excellent syn-selectivity (greater-than-or-equal-to 96% d.e.) in 64-94% yields. Stereocontrolled preparation of both (E)- and (Z)-alpha,beta-unsaturated esters 8 and a syn-amino diol derivative 17 from syn-7 and syn-12, respectively, is also described.

  DOI：

  10.1039/p19920002813
• 作为产物：
  描述：

  tert-butyldimethylsilylketene 、 Tributyl-neopentyloxy-stannan 、 苯甲醛 在 四氯化钛 、 zinc(II) iodide 作用下， 生成 neopentyl (2R*,3R*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate 、 neopentyl (2R*,3R*)-2-(tert-butyldimethylsilyl)-3-hydroxy-3-phenylpropionate
  参考文献：
  名称：

  Chemistry of silylketenes: a simple preparation of α-silyl-α-stannylacetic esters and their stereoselective Reformatsky-type reaction with aldehydes or aldimines

  摘要：

  Silylketenes 1a, b reacted smoothly with alkoxystannanes 3 to give the corresponding alpha-silyl-alpha-stannylacetates 4 almost quantitatively. Treatment of 4 with TiCl4 caused selective cleavage of the C-Sn bond to bring about Reformatsky-type reaction with aldehydes 6 giving beta-hydroxy-alpha-silyl esters 7. These two steps were carried out by one-pot operation, and variously substituted compounds 7 were obtained with high syn-selectivity (52-> 96% d.e.) in 41-89% yields. A similar one-pot procedure starting from la-c, 3, and aldimines 11 also provided the corresponding beta-amino-alpha-silyl esters 12 with excellent syn-selectivity (greater-than-or-equal-to 96% d.e.) in 64-94% yields. Stereocontrolled preparation of both (E)- and (Z)-alpha,beta-unsaturated esters 8 and a syn-amino diol derivative 17 from syn-7 and syn-12, respectively, is also described.

  DOI：

  10.1039/p19920002813