2,2'-bis(2-nitrophenyl)ethyl chloroformate | 189216-43-1

• 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: 2,2'-bis(2-nitrophenyl)ethyl chloroformate
• 英文别名: 2,2-Bis(2-nitrophenyl)ethyl carbonochloridate
• CAS: 189216-43-1
• 化学式: C₁₅H₁₁ClN₂O₆
• 分子量: 350.715
• InChiKey: IBHYQSODMYCSKW-UHFFFAOYSA-N

物化性质

• 沸点：
  532.4±50.0 °C(Predicted)
• 密度：
  1.454±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  118
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,2'-bis(2-nitrophenyl)ethyl chloroformate 在 三乙胺 作用下， 以 四氢呋喃 为溶剂， 生成 5',3'-bis(O-tert-butyldimethylsilyl)-6-N-(2,2'-bis(2-nitrophenyl)ethyloxycarbonyl)-2'-deoxyadenosine
  参考文献：
  名称：

  Photocleavable Protecting Groups as Nucleobase Protections Allowed the Solid-Phase Synthesis of Base-Sensitive SATE-Prooligonucleotides

  摘要：

  The first synthesis of oligodeoxynucleotide heteropolymers carrying base-sensitive S-pivaloylthioethyl (t-Bu-SATE) phosphotriester linkages has been performed. It is based on the use of 6-nitroveratryloxycarbonyl (NVOC) and 2,2'-bis(2-nitrophenyl)ethoxycarbonyl (diNPEOC) groups as nucleobase protections in combination with photolysis deprotection. The synthesis was realized using the phosphoramidite approach on solid support bearing a 1-(o-nitrophenyl)-1,3-propanediol linker. The removal of the protecting groups and the cleavage of the oligonucleotides from the solid support were accomplished in a single photolysis procedure upon UV irradiation at wavelengths >300 nn. Faster deprotection rates were observed for diNPEOC-protected nucleosides and oligomers than with NVOC-protected ones. The synthesis of pentanucleoside t-Bu-SATE-phosphotriesters d((5')TpCpCpCpTp(3')), d((5')TpApApApAp(3')), and d((5')TpGpGpGpTp(3')) and of dodecanucleoside t-Bu-SATE-phosphotriesters and -phosphorothioate d((5')ApCpApCpCpCpApApTpTpCpTp(3')) and d((5')ApGpApApTpTpGpGpGpTpGpTp(3')) demonstrated the efficiency of the method.

  DOI：

  10.1021/jo990479h
• 作为产物：
  描述：

  1-硝基-2-[(2-硝基苯基)甲基]苯 在 苄基三甲基氢氧化铵 作用下， 以 四氢呋喃 、 甲醇 、 二甲基亚砜 、 甲苯 为溶剂， 反应 19.0h， 生成 2,2'-bis(2-nitrophenyl)ethyl chloroformate
  参考文献：
  名称：

  Photolabile protecting groups for nucleosides: Synthesis and photodeprotection rates

  摘要：

  o-Nitrobenzyloxycarbonyl and a number of related groups have been tested for the photolabile protection of nucleoside 5'-hydroxyls. The rates of photodeprotection were found to vary by approximately 17 fold in a series of 5'-O-protected thymidine derivatives irradiated at 365 nm under identical conditions. The homologous 2-(o-nitrophenyl)ethoxycarbonyl group and its derivatives were found to be removed approximately 2-fold faster than the corresponding o-nitrobenzyloxycarbonyl group, possibly due to an increased rare of alpha-hydrogen abstraction by the photo-excited nitro group. Photolysis rates were affected by substitutions on both the phenyl ring and alpha-carbon, with the strongest rate enhancements caused by the presence of a methyl or second o-nitrophenyl group in the alpha-position. Among the ring-substituted derivatives studied, o-nitro and o-iodo had the strongest enhancement effects on photodeprotection, while an o-fluoro group reduced the rate of photodeprotection. In general, substitutions at other positions on the phenyl ring had less effect on photolysis rates. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0040-4020(97)00154-3