cholestanyl chloroformate | 75765-60-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: cholestanyl chloroformate
• 英文别名: [(3S,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl] carbonochloridate
• CAS: 75765-60-5
• 化学式: C₂₈H₄₇ClO₂
• 分子量: 451.133
• InChiKey: MZPORZAJWGKMGX-ZPPNOKGKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  11
• 重原子数：
  31
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.96
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  cholestanyl chloroformate 以 四氢呋喃 、 苯 为溶剂， 反应 168.0h， 生成 3α-(phenyltelluro)cholestane
  参考文献：
  名称：

  (Aryltelluro)formates as Precursors of Alkyl Radicals:  Thermolysis and Photolysis of Primary and Secondary Alkyl (Aryltelluro)formates

  摘要：

  Alkyl (aryltelluro)formates are effective precursors of oxyacyl, methyl, and primary and secondary alkyl radicals. At room temperature, irradiation of a benzene solution of methyl (aryltelluro)formates 10-12, 2-methylpropyl (aryltelluro)formates 14 and 15, octyl (phenyltelluro)formate (17), cyclohexyl (aryltelluro)formates 19 and 20, 3 beta-cholestanyl (aryltelluro)formates 22 and 23, cholesteryl (phenyltelluro)formate (24) and benzyl (phenyltelluro)formate (27) with a 250-W low-pressure mercury lamp leads to the formation of oxyacyl radicals (34), which can be trapped by diphenyl diselenide to give the corresponding alkyl (phenylseleno)formates 13, 16, 18, 21, 24, 26, and 28 with excellent overall conversions. Thermolysis of these telluroformates at 160 degrees C in the dark leads to the formation of methyl and primary and secondary alkyl aryl tellurides 36-43 in excellent yields. Presumably, these transformations involve oxyacyl radicals, which undergo subsequent decarboxylation at the elevated temperature to afford alkyl radicals, which become involved in further radical chemistry. When 1-(benzylseleno)-5-hexyl (phenyltelluro)formate (44) was thermolysed under these conditions, 2-methylselenane (45) was observed as the sole selenium-containing product, demonstrating the synthetic utility of (aryltelluro)formates as alkyl radical precursors.

  DOI：

  10.1021/jo960838y
• 作为产物：
  描述：

  光气 、 3beta-胆甾烷醇 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 cholestanyl chloroformate
  参考文献：
  名称：

  (Aryltelluro)formates as Precursors of Alkyl Radicals:  Thermolysis and Photolysis of Primary and Secondary Alkyl (Aryltelluro)formates

  摘要：

  Alkyl (aryltelluro)formates are effective precursors of oxyacyl, methyl, and primary and secondary alkyl radicals. At room temperature, irradiation of a benzene solution of methyl (aryltelluro)formates 10-12, 2-methylpropyl (aryltelluro)formates 14 and 15, octyl (phenyltelluro)formate (17), cyclohexyl (aryltelluro)formates 19 and 20, 3 beta-cholestanyl (aryltelluro)formates 22 and 23, cholesteryl (phenyltelluro)formate (24) and benzyl (phenyltelluro)formate (27) with a 250-W low-pressure mercury lamp leads to the formation of oxyacyl radicals (34), which can be trapped by diphenyl diselenide to give the corresponding alkyl (phenylseleno)formates 13, 16, 18, 21, 24, 26, and 28 with excellent overall conversions. Thermolysis of these telluroformates at 160 degrees C in the dark leads to the formation of methyl and primary and secondary alkyl aryl tellurides 36-43 in excellent yields. Presumably, these transformations involve oxyacyl radicals, which undergo subsequent decarboxylation at the elevated temperature to afford alkyl radicals, which become involved in further radical chemistry. When 1-(benzylseleno)-5-hexyl (phenyltelluro)formate (44) was thermolysed under these conditions, 2-methylselenane (45) was observed as the sole selenium-containing product, demonstrating the synthetic utility of (aryltelluro)formates as alkyl radical precursors.

  DOI：

  10.1021/jo960838y

文献信息

• Anthraquinone–steroid based gelators of alcohols and alkanes
  作者：Ravindranath Mukkamala、Richard G. Weiss

  DOI：10.1039/c39950000375

  日期：——

  Gelation depends on key structural features of the gelator but not on specific gelator–liquid interactions other than those related to solubility.

  凝胶化取决于凝胶剂的主要结构特征，但并不取决于凝胶剂与液体之间除溶解度以外的特定相互作用。
• KEPLER, J. A.;PHILIP, A.;LEE, Y. W.;MUSALLAM, H. A.;CARROLL, F. I., J. MED. CHEM., 30,(1987) N 8, 1505-1509
  作者：KEPLER, J. A.、PHILIP, A.、LEE, Y. W.、MUSALLAM, H. A.、CARROLL, F. I.

  DOI：——

  日期：——
• (Aryltelluro)formates as Precursors of Alkyl Radicals:  Thermolysis and Photolysis of Primary and Secondary Alkyl (Aryltelluro)formates
  作者：Mathew A. Lucas、Carl H. Schiesser

  DOI：10.1021/jo960838y

  日期：1996.1.1

  Alkyl (aryltelluro)formates are effective precursors of oxyacyl, methyl, and primary and secondary alkyl radicals. At room temperature, irradiation of a benzene solution of methyl (aryltelluro)formates 10-12, 2-methylpropyl (aryltelluro)formates 14 and 15, octyl (phenyltelluro)formate (17), cyclohexyl (aryltelluro)formates 19 and 20, 3 beta-cholestanyl (aryltelluro)formates 22 and 23, cholesteryl (phenyltelluro)formate (24) and benzyl (phenyltelluro)formate (27) with a 250-W low-pressure mercury lamp leads to the formation of oxyacyl radicals (34), which can be trapped by diphenyl diselenide to give the corresponding alkyl (phenylseleno)formates 13, 16, 18, 21, 24, 26, and 28 with excellent overall conversions. Thermolysis of these telluroformates at 160 degrees C in the dark leads to the formation of methyl and primary and secondary alkyl aryl tellurides 36-43 in excellent yields. Presumably, these transformations involve oxyacyl radicals, which undergo subsequent decarboxylation at the elevated temperature to afford alkyl radicals, which become involved in further radical chemistry. When 1-(benzylseleno)-5-hexyl (phenyltelluro)formate (44) was thermolysed under these conditions, 2-methylselenane (45) was observed as the sole selenium-containing product, demonstrating the synthetic utility of (aryltelluro)formates as alkyl radical precursors.