(E)-ethyl 1-O-(1'-hexadecenyl) ether | 23313-54-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (E)-ethyl 1-O-(1'-hexadecenyl) ether
• 英文别名: 1t-ethoxy-hexadec-1-ene；Ethyl-1-trans-hexadecenylether；(E)-1-ethoxyhexadec-1-ene
• CAS: 23313-54-4
• 化学式: C₁₈H₃₆O
• 分子量: 268.483
• InChiKey: SQJKZCKKYWTGQK-ISLYRVAYSA-N

物化性质

• 沸点：
  340.9±11.0 °C(Predicted)
• 密度：
  0.824±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  8.4
• 重原子数：
  19
• 可旋转键数：
  15
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  棕榈酸乙酯 在 氨 、 lithium 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 六甲基磷酰三胺 、 叔丁醇 为溶剂， 反应 3.33h， 生成 (E)-ethyl 1-O-(1'-hexadecenyl) ether
  参考文献：
  名称：

  Stereocontrolled Synthesis of Plasmalogen-Type Lipids from Glyceryl Ester Precursors

  摘要：

  Two pathways for the synthesis of naturally occurring Z vinyl ether linkages in plasmalogen lipids (1-O-((Z)-1'-alkenyl)-2-acyl-sn-glycerophosphocholines and ethanolamines) have been investigated: (i) reduction of alpha-alkoxy enol phosphates and (ii) alkylidenation of diprotected glyceryl 1-formate esters utilizing 1,1-dibromoalkanes, zinc, TiCl4, and TMEDA. While both methods reported good chemical yields and high Z selectivity for model substrates, the titanium-mediated coupling sequence failed when the dibromoalkyl chain length exceeded Ca, Treatment of 1-decyl-2-O-benzyl-3-O-(tert-butyldiphenylsilyl) with LDA and diethyl chlorophosphate at -78 degrees C followed by reduction of the vinyl phosphate intermediate using Pd(PPh(3))4 and Et(3)Al in DCE at 0 degrees C, however, gave 1-O-(1'-decenyl)2-O-benzyl-3-O-(tert-butyldiphenylsilyl)-rac-glycerol in in 62-65% yield and 2:1 Z:E stereoselectivity; reduction in hexane at 0 OC with slow addition of :triethylaluminum improved the selectivity to > 95% Z. Extension of this method to the preparation of a plasmalogen precursor (1-O-((Z)-1'-hexadecenyl)-2-hexadecanoyl and the first synthesis of a choline derivative of diplasmalogen (1,2-di(O-(Z)-1'-hexadecenyl)-rac-glycerophosphocholine), a major component of rabbit epididymal spermatozoa phospholipid, in moderate chemical yields and excellent Z selectivity is reported.

  DOI：

  10.1021/jo00098a040

文献信息

• Stereocontrolled Synthesis of Plasmalogen-Type Lipids from Glyceryl Ester Precursors
  作者：Yuanjin Rui、David H. Thompson

  DOI：10.1021/jo00098a040

  日期：1994.9

  Two pathways for the synthesis of naturally occurring Z vinyl ether linkages in plasmalogen lipids (1-O-((Z)-1'-alkenyl)-2-acyl-sn-glycerophosphocholines and ethanolamines) have been investigated: (i) reduction of alpha-alkoxy enol phosphates and (ii) alkylidenation of diprotected glyceryl 1-formate esters utilizing 1,1-dibromoalkanes, zinc, TiCl4, and TMEDA. While both methods reported good chemical yields and high Z selectivity for model substrates, the titanium-mediated coupling sequence failed when the dibromoalkyl chain length exceeded Ca, Treatment of 1-decyl-2-O-benzyl-3-O-(tert-butyldiphenylsilyl) with LDA and diethyl chlorophosphate at -78 degrees C followed by reduction of the vinyl phosphate intermediate using Pd(PPh(3))4 and Et(3)Al in DCE at 0 degrees C, however, gave 1-O-(1'-decenyl)2-O-benzyl-3-O-(tert-butyldiphenylsilyl)-rac-glycerol in in 62-65% yield and 2:1 Z:E stereoselectivity; reduction in hexane at 0 OC with slow addition of :triethylaluminum improved the selectivity to > 95% Z. Extension of this method to the preparation of a plasmalogen precursor (1-O-((Z)-1'-hexadecenyl)-2-hexadecanoyl and the first synthesis of a choline derivative of diplasmalogen (1,2-di(O-(Z)-1'-hexadecenyl)-rac-glycerophosphocholine), a major component of rabbit epididymal spermatozoa phospholipid, in moderate chemical yields and excellent Z selectivity is reported.