2-pentanone-1,1,1-d3 | 79523-36-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-pentanone-1,1,1-d3
• 英文别名: 1,1,1-Trideuteriopentan-2-one；1,1,1-trideuteriopentan-2-one
• CAS: 79523-36-7
• 化学式: C₅H₁₀O
• 分子量: 89.11
• InChiKey: XNLICIUVMPYHGG-BMSJAHLVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  6
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2-pentanol-1,1,1-d3 在 chromium(VI) oxide 作用下， 以 硫酸 、 丙酮 为溶剂， 生成 2-pentanone-1,1,1-d3
  参考文献：
  名称：

  Characterization of five [C4H7O]+ Ion structures. Fragmentation of the 2-pentanone molecular ion

  摘要：

  AbstractThe [C4H70]+ ions [CH2CHC(OH)CH3]+ (1), [CH3CHCHC(OH)H]+ (2), [CH2C(CH3)C(OH)H]+ (3), [Ch3CH2CH2CO]+ (4) and [(CH3)2CHCO]+ (5) have been characterized by their collision‐induced dissociation (CID) mass spectra and charge stripping mass spectra. The ions 1–3 were prepared by gas phase protonation of the relevant carbonyl compounds while 4 and 5 were prepared by dissociative electron impact ionization of the appropriate carbonyl compounds. Only 2 and 3 give similar spectra and are difficult to distinguish from each other; the remaining ions can be readily characterized by either their CID mass spectra or their charge stripping mass spectra. The 2‐pentanone molecular ion fragments by loss of the C(1) methyl and the C(5) methyl in the ratio 60:40 for metastable ions; at higher internal energies loss of the C(1) methyl becomes more favoured. Metastable ion characteristics, CID mass spectra and charge stripping mass spectra all show that loss of the C(1) methyl leads to formation of the acyl ion 4, while loss of the C(5) methyl leads to formation of protonated vinyl methyl ketone (1). These results are in agreement with the previously proposed potential energy diagram for the [C5H10O]+˙ system.

  DOI：

  10.1002/oms.1210200108

文献信息

• Solution conformations of barbituric acid derivatives: a 3J(13C,1H) NMR study
  作者：F. Ivy Carroll、Anita H. Lewin、Emily E. Williams、Jack A. Berdasco、Charles G. Moreland

  DOI：10.1021/jm00375a019

  日期：1984.9

  The conformations of the 5-alkyl chains of 5,5-dialkylbarbituric acid derivatives in polar and nonpolar media were determined from the magnitudes of the vicinal heteronuclear coupling constants between the alpha-alkyl hydrogens and the carbonyl carbons. The experimental 3J values have been compared to theoretical values, and the conformational populations of the alkyl side chains with respect to the trioxopyrimidine ring have been determined. The results show that all these compounds have a very low barrier to rotation for both butyl and ethyl side chains. The barbiturates that do not have a 1'-methyl group in the butyl side chain, butobarbital and amobarbital, have no preferred conformation for either the butyl or ethyl side chains. However, the compounds with a 1'-methyl group, pentobarbital and alpha-methylamobarbital, exhibit preferred conformation for both alkyl chains. The significance of these results to the relationship between conformations and pharmacological activity is discussed.
• The reactions of metastable [C5 H10 O]+˙ ions with the oxygen on the second carbon
  作者：David J. McAdoo、Charles E. Hudson、Fred W. McLafferty、Terry E. Parks

  DOI：10.1002/oms.1210190802

  日期：1984.8

  AbstractNearly all [C5H10O]+˙ isomers with the oxygen on the second carbon are shown to interconvert with each other and lose methyl and ethylene at the threshold for dissociation. The methyls contain the carbons from the 1‐ and 5‐positions with about equal frequency, and C(3) or perhaps C(4) about half as often as either terminal carbon. CH3 CH2 CH2 CO+ is formed by loss of the C(1) methyl and magnified image by loss of the C(5) methyl. Hydorgen transfer between C(5) and the oxygen and between the oxygen and C(4) are facile, and 1,2‐hydrogen transfers between C(3) and C(4) occur with high frequency. Extensive skeletal rearrangements also take placae by 1,2‐shifts between C(2), C(3) and C(4). We attribute the occurrence of teh three‐center shifts between C(2), C(3) and C(4) to the presence of considerable charge density on C(2) and C(3) in many of the [C5H10O]+˙ isomers. The isomerizations of [C5H10O]+˙ can be considered a mixture of free radical and carbocation reactions. Strong similarities exist between the isomerizations of metastable [C5H10O]+˙ ions with the oxygen on the second carbon and those of isomers of ionized butanoic acid, methyl butanoate and n‐butanal.
• Characterization of five [C4H7O]+ Ion structures. Fragmentation of the 2-pentanone molecular ion
  作者：Keith R. Laderoute、Jan J. Zwinselman、Alex. G. Harrison

  DOI：10.1002/oms.1210200108

  日期：1985.1

  AbstractThe [C4H70]+ ions [CH2CHC(OH)CH3]+ (1), [CH3CHCHC(OH)H]+ (2), [CH2C(CH3)C(OH)H]+ (3), [Ch3CH2CH2CO]+ (4) and [(CH3)2CHCO]+ (5) have been characterized by their collision‐induced dissociation (CID) mass spectra and charge stripping mass spectra. The ions 1–3 were prepared by gas phase protonation of the relevant carbonyl compounds while 4 and 5 were prepared by dissociative electron impact ionization of the appropriate carbonyl compounds. Only 2 and 3 give similar spectra and are difficult to distinguish from each other; the remaining ions can be readily characterized by either their CID mass spectra or their charge stripping mass spectra. The 2‐pentanone molecular ion fragments by loss of the C(1) methyl and the C(5) methyl in the ratio 60:40 for metastable ions; at higher internal energies loss of the C(1) methyl becomes more favoured. Metastable ion characteristics, CID mass spectra and charge stripping mass spectra all show that loss of the C(1) methyl leads to formation of the acyl ion 4, while loss of the C(5) methyl leads to formation of protonated vinyl methyl ketone (1). These results are in agreement with the previously proposed potential energy diagram for the [C5H10O]+˙ system.