Triaethyl-triphosphat | 91773-42-1

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机磷酸及其衍生物
• 英文名称: Triaethyl-triphosphat
• 英文别名: Bis[ethoxy(hydroxy)phosphoryl] ethyl phosphate
• CAS: 91773-42-1
• 化学式: C₆H₁₇O₁₀P₃
• 分子量: 342.116
• InChiKey: WLNSAUKPPJSXAA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.6
• 重原子数：
  19
• 可旋转键数：
  10
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  138
• 氢给体数：
  2
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  O-ethyl N,N-diethylphosphoramidic acid 以 甲苯 为溶剂， 生成 Triaethyl-triphosphat 、
  参考文献：
  名称：

  O-Ethyl Phosphoramidic Acids with Sterically Demanding N-Substituents: Useful Precursors of Ethyl Metaphosphate on Thermolysis

  摘要：

  Kinetics of the thermal fragmentation of four N-substituted derivatives of O-ethyl phosphoramidic acids, (EtO-P(O)(NRR')(OH), were examined. When N contained either of the sterically demanding mesityl or 1-adamantyl groups, the reaction followed first-order kinetics, both in the absence and presence of an alcohol trapping reagent. In the former case, the product was a pyrophosphate (RR'N(EtO)(O)P-O-P(O)(OEt)OH). In the latter case, phosphorus was trapped as a dialkyl phosphate. Both reactions are therefore indicated to follow an elimination-addition mechanism, with ethyl metaphosphate as transient intermediate. The pyrophosphate is derived from reaction of the metaphosphate with unreacted phosphoramidic acid. With less bulky substituents (N-phenyl or N,N-diethyl), mixed first- and second-order kinetics were followed in the absence of a trapping agent; some bimolecular interaction of the substrate to form the pyrophosphate product is indicated by the second-order kinetics. Product analyses and quantitative measurements were made with P-31 NMR spectroscopy. From all phosphoramidic acids, the intermediate metaphosphate was effectively trapped by reaction with the OH group on the surface of solid silica gel. The presence of covalently bonded phosphate on the surface was shown by P-31 and Si-29 CP/MAS NMR spectroscopy.

  DOI：

  10.1021/jo00095a013

文献信息

• O-Ethyl Phosphoramidic Acids with Sterically Demanding N-Substituents: Useful Precursors of Ethyl Metaphosphate on Thermolysis
  作者：Louis D. Quin、Stefan Jankowski

  DOI：10.1021/jo00095a013

  日期：1994.8

  Kinetics of the thermal fragmentation of four N-substituted derivatives of O-ethyl phosphoramidic acids, (EtO-P(O)(NRR')(OH), were examined. When N contained either of the sterically demanding mesityl or 1-adamantyl groups, the reaction followed first-order kinetics, both in the absence and presence of an alcohol trapping reagent. In the former case, the product was a pyrophosphate (RR'N(EtO)(O)P-O-P(O)(OEt)OH). In the latter case, phosphorus was trapped as a dialkyl phosphate. Both reactions are therefore indicated to follow an elimination-addition mechanism, with ethyl metaphosphate as transient intermediate. The pyrophosphate is derived from reaction of the metaphosphate with unreacted phosphoramidic acid. With less bulky substituents (N-phenyl or N,N-diethyl), mixed first- and second-order kinetics were followed in the absence of a trapping agent; some bimolecular interaction of the substrate to form the pyrophosphate product is indicated by the second-order kinetics. Product analyses and quantitative measurements were made with P-31 NMR spectroscopy. From all phosphoramidic acids, the intermediate metaphosphate was effectively trapped by reaction with the OH group on the surface of solid silica gel. The presence of covalently bonded phosphate on the surface was shown by P-31 and Si-29 CP/MAS NMR spectroscopy.