Benzoic acid (2S,3S)-2-benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-butyl ester | 194283-77-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Benzoic acid (2S,3S)-2-benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-butyl ester
• 英文别名: [(2S,3S)-4-[tert-butyl(dimethyl)silyl]oxy-3-hydroxy-2-phenylmethoxybutyl] benzoate
• CAS: 194283-77-7
• 化学式: C₂₄H₃₄O₅Si
• 分子量: 430.616
• InChiKey: ZCRPXKDDCARYKS-VXKWHMMOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.81
• 重原子数：
  30
• 可旋转键数：
  12
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  65
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Benzoic acid (2S,3S)-2-benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-butyl ester 在 N-甲基吗啉 、 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 52.0h， 生成 (E)-3-[(1S,2R)-2-Benzyloxy-1-(tert-butyl-dimethyl-silanyloxymethyl)-3-oxo-propoxy]-acrylic acid methyl ester
  参考文献：
  名称：

  Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure C-Furanosides

  摘要：

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.

  DOI：

  10.1021/jo9702812
• 作为产物：
  描述：

  2-O-benzyl-3,4-O-isopropylidene-L-threitol 在 吡啶 、 咪唑 、 对甲苯磺酸 作用下， 以 甲醇 、 二氯甲烷 、 水 为溶剂， 反应 16.0h， 生成 Benzoic acid (2S,3S)-2-benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-butyl ester
  参考文献：
  名称：

  Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure C-Furanosides

  摘要：

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.

  DOI：

  10.1021/jo9702812

文献信息

• Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure <i>C</i>-Furanosides
  作者：Ganesh Pandey、Saumen Hajra、Manas K. Ghorai、K. Ravi Kumar

  DOI：10.1021/jo9702812

  日期：1997.8.1

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.