pentacarbonyl(1-oxa-3,3-dimethylcyclopent-2-ylidene)chromium(0) | 54040-18-5

• 英文名称: pentacarbonyl(1-oxa-3,3-dimethylcyclopent-2-ylidene)chromium(0)
• 英文别名: pentacarbonyl(5,5-dimethyl-2-oxacyclopentylidene)chromium(0)
• CAS: 54040-18-5
• 化学式: C₁₁H₁₀CrO₆
• 分子量: 290.193
• InChiKey: YXLOHTYYRYSOOO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  pentacarbonyl(1-oxa-3,3-dimethylcyclopent-2-ylidene)chromium(0) 、 C13取代的一氧化碳 以 甲苯 为溶剂， 生成 cis-(CO)3((13)CO)2CrC(C(CH3)2CH2CH2O) 、 cis-(CO)3((13)CO)2CrC(C(CH3)2CH2CH2O)
  参考文献：
  名称：

  Casey, Charles P.; Cesa, Mark C., Organometallics, 1982, vol. 1, # 50, p. 87 - 94

  摘要：

  DOI：
• 作为产物：
  描述：

  2-(oxacyclopentylidene)pentacarbonylchromium(0) 、 在 正丁基锂 作用下， 以 乙醚 、 正己烷 为溶剂， 以88%的产率得到pentacarbonyl(1-oxa-3,3-dimethylcyclopent-2-ylidene)chromium(0)
  参考文献：
  名称：

  Casey, Charles P.; Cesa, Mark C., Organometallics, 1982, vol. 1, # 50, p. 87 - 94

  摘要：

  DOI：

文献信息

• Physical Organic Chemistry of Transition Metal Carbene Complexes. 14.¹ Thermodynamic Acidity Measurements of Fischer Carbene Complexes in Acetonitrile
  作者：Claude F. Bernasconi、Aquiles E. Leyes、Mark L. Ragains、Yan Shi、Huan Wang、William D. Wulff

  DOI：10.1021/ja980608w

  日期：1998.9.1

  The pK(a) values of five Fischer carbene complexes of the general structure (CO)(5)Cr=C(OR)CHR'R " of two (CO)(4)(PR3)Cr=C(OCH3)CH3 type complexes and of one aminocarbene complex, (CO)(5)Cr=C(NCH- (CH3)CH2)CH3, were determined in acetonitrile by a spectrophotometric method. These pK(a) values span a range from 22.2 for (CO)(5)Cr=C(OCH3)CH3 to 27.6 for (CO)(5)Cr=C(NCH(CH3)CH2)CH3. Deprotonation of the carbene complexes was achieved with strong amine bases such as TMG, DBU, and BEMP. Attempts at measuring the pK(a) of some other carbene complexes failed either because of instability of the respective anions (e.g., (CO)(5)Cr=C(OCH3)CH(CH3)(2)) or because the pK(a) was too high for deprotonation to occur ((CO)(5)Cr= C(N(CH3)(2))CH3), Similarities and differences in the structural dependence of these acidities in acetonitrile compared to other solvents such as 50% acetonitrile-50% water, DMSO, and THF are discussed.