丁酸-D2 | 64833-96-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 丁酸-D2
• 英文名称: (3,3-2H2)-butyric acid
• 英文别名: butanoic-3,3-d2 acid；3,3-Dideuterio-buttersaeure；n-Buttersaeure-(3,3-d2)；3,3-Dideuterobuttersaeure；3,3-dideuterio-butyric acid；Butyric-3,3-D2 acid；3,3-dideuteriobutanoic acid
• CAS: 64833-96-1
• 化学式: C₄H₈O₂
• 分子量: 90.0904
• InChiKey: FERIUCNNQQJTOY-CBTSVUPCSA-N

物化性质

• 溶解度：
  可溶于氯仿（少许）

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  6
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  丁酸-D2 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 反应 2.0h， 以93%的产率得到1-(3,3-2H2)-丁醇
  参考文献：
  名称：

  Site-selective deuterium labeling of the tetrabutylammonium cation

  摘要：

  Four separate selectively deuterated samples of tetrabutylammonium iodide have been prepared in which each one of the four nonequivalent alkyl carbons is separately and fully deuterated. These samples were prepared for nuclear magnetic resonance (NMR) studies of the aggregation of ion pairs in low polarity solvents.

  DOI：

  10.1002/(sici)1099-1344(200004)43:5<473::aid-jlcr333>3.0.co;2-s
• 作为产物：
  描述：

  1-(3,3-2H2)-丁醇 在 sodium dichromate 、 硫酸 作用下， 生成 丁酸-D2
  参考文献：
  名称：

  Noncompeting metastable losses of methyl and ethylene from gaseous butanoic acid ions due to isomerization prior to methyl loss

  摘要：

  DOI：

  10.1021/ja00416a003

文献信息

• β-d2烷基酸类化合物的制备方法
  申请人：凯莱英生命科学技术(天津)有限公司

  公开号：CN108101771A

  公开（公告）日：2018-06-01

  本发明提供了一种β‑d2烷基酸类化合物的制备方法。该制备方法包括以下步骤：将化合物A和LiAlD4还原反应，得到化合物B；对化合物B进行‑OD基保护反应，得到中间体C；对中间体C进行溴代反应，得到化合物D；以及在碱性条件下将化合物D与乙酸进行取代反应，得到β‑d2烷基酸类化合物。该方法以廉价易得的烃基酸为起始原料，依次经LiAlD4还原反应、‑OD基保护反应、溴代反应、乙酸取代反应四步制得了β‑d2烷基酸类化合物。该法工艺路线简单，且反应过程中无需采用昂贵的催化剂等原料，成本较低。而且，利用本发明的制备方法，β‑d2烷基酸类化合物的总收率较高，反应放大至克级收率稳定，重复性好，实用可行。
• Reactions of ionized dibutyl ether
  作者：Richard D. Bowen、Dennis Suh、Johan K. Terlouw

  DOI：10.1002/oms.1210291211

  日期：1994.12

  AbstractThe reactions of ionized di‐n‐butyl ether are reported and compared with those of ionized n‐butyl sec‐butyl and di‐sec‐butyl ether. The main fragmentation of metastable (CH3CH2CH2CH2)2O+. is C2H5⋅ loss (˜85%), but minor amounts (2–4%) of CH3⋅, C4H7⋅, C4H9⋅, C4H10 and C4H10O are also eliminated. In contrast, C2H5⋅ elimination is of much lower abundance (20 and 4%, respectively) from metastable CH3CH2CH2CH2OCH(CH3)CH2CH3+. and [CH3CH2(CH3)CH]2O+., which expel mainly C2H6 and CH3⋅ (35–55%). Studies on collisional activation spectra of the C6H13O+ oxonium ions reveal that C2H5⋅ loss from (CH3CH2CH2CH2)2O+. gives the same product, (CH3CH2CH2CH2 +OCHCH3) as that formed by direct cleavage of CH3CH2CH2CH2OCH(CH3)CH2CH3+.. Elimination of C2H5⋅ from (CH3CH2CH2CH2)2O+. is interpreted by means of a mechanism in which a 1,4‐H shift to the oxygen atom initiates a unidirectional skeletal rearrangement to CH3CH2CH2CH2OCH(CH3)CH2CH3+., which then undergoes cleavage to CH3CH2CH2CH2+OCHCH3 and C2H5⋅. Further support for this mechanism is obtained from considering the collisional activation and neutralization‐reionization mass spectra of the (C4H9)2O+. species and the behaviour of labelled analogues of (CH3CH2CH2CH2)2O+.. The rate of ethyl radical loss is suppressed relative to those of alternative dissociations by deuteriation at the γ‐position of either or both butyl substituents. Moreover, C2H5⋅ loss via skeletal rearrangement and fragmentation of the unlabelled butyl group in CH3CH2CH2CH2OCH2CH2CD2CH3+. occurs approximately five times more rapidly than C2H4D⋅ expulsion via isomerization and fission of the labelled butyl substituent. These findings indicate that the initial 1,4‐hydrogen shift is influenced by a significant isotope effect, as would be expected if this step is rate limiting in ethyl radical loss.
• Unimolecular reactions of isolated organic ions: The chemistry of the oxonium ions CH3CH2CH2CH2+O = CH2 and CH3CH2CH2CH = O+CH3
  作者：Richard D. Bowen、Peter J. Derrick

  DOI：10.1002/oms.1210281035

  日期：1993.10

  AbstractThe reactions of the metastable oxonium ions CH3CH2CH2CH2+O = CH2 and CH3CH2CH2 = O+ CH3 are reported and discussed. Both these isomers of C5H11O+ expel predominantly CH2O (75–90% of the metastable ion current), a moderate amount of C3H6 (5–15%), a minor amount of CH3OH (2–8%) and a very small proportion of H2O (0.5–3%). All these processes give rise to Gaussian metastable peaks. The kinetic energy releases associated with fragmentation of these oxonium ions are similar, but slightly larger for dissociation of CH3CH2CH2CH = O+CH3. The behaviour of labelled analogues confirm that the reactions of CH3CH2CH2CH = O+CH3 are closely related, but subtly different. Elimination of CH2O and C3H6 is intelligible by means of mechanisms involving CH3CH+CH2CH2OCH3. This open‐chain cation is accessible to CH3CH2CH2 +O = CH2 by a 1,5‐H shift and to CH3CH2CH2‐CH = O+CH3 by two consecutive 1,2‐H shifts (or, possibly, a direct 1,3‐H shift). The rates of these 1,2‐, 1,3‐ and 1,5‐H shifts are compared with one another and also with the rates of CH2O and C3H6 loss from each of the two oxonium ions. The 1,5‐H shift that converts CH3CH+CH2CH2OCH3 formed from CH3CH2CH2CH = O+ CH3 into CH3CH2CH2+O = CH2 prior to CH2O elimination is essentially unidirectional. In contrast, the corresponding step converting C5H11O+ ions generated as CH3CH2CH2CH2+O = CH2 into CH3CH+ CH2CH2OCH3 competes effectively with expulsion of CH2O and C3H6. The implications of the latter finding for the degree of concert in the hydrogen transfer and carbon‐carbon bond fission steps in alkene losses from oxonium ions via routes that are formally isoelectronic with the retro ‘ene’ pericyclic process are emphasized.