丙基硫氧嘧啶杂质12 | 21633-79-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 中文名称: 丙基硫氧嘧啶杂质12
• 英文名称: Butyrylmalonsaeure-diethylester
• 英文别名: Diethyl butanoylpropanedioate；diethyl 2-butanoylpropanedioate
• CAS: 21633-79-4
• 化学式: C₁₁H₁₈O₅
• 分子量: 230.261
• InChiKey: BGYRVXQQKUXYFP-UHFFFAOYSA-N

物化性质

• 沸点：
  249.5°C (estimate)
• 密度：
  1.0560

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  16
• 可旋转键数：
  9
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  69.7
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  丙基硫氧嘧啶杂质12 在 过氯酰氟 、 乙醇 、 sodium ethanolate 作用下， 生成 2-氟丙二酸二乙酯
  参考文献：
  名称：

  Machleidt,H., Justus Liebigs Annalen der Chemie, 1964, vol. 676, p. 66 - 75

  摘要：

  DOI：
• 作为产物：
  描述：

  2-((E)-But-2-enoyl)-malonic acid diethyl ester 在 palladium on activated charcoal 、 乙醇 作用下， 生成 丙基硫氧嘧啶杂质12
  参考文献：
  名称：

  Osugi, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1955, vol. 75, p. 1549,1552

  摘要：

  DOI：

文献信息

• Asymmetric Hydrogenation of β-Aryl Alkylidene Malonate Esters: Installing an Ester Group Significantly Increases the Efficiency
  作者：Qian-Kun Zhao、Xiong Wu、Lin-Ping Li、Fan Yang、Jian-Hua Xie、Qi-Lin Zhou

  DOI：10.1021/acs.orglett.1c00093

  日期：2021.3.5

  practical method for efficient asymmetric hydrogenation of β-aryl alkylidene malonates. With a site-specifically tailored chiral spiro iridium catalyst, a series of β-aryl alkylidene malonate esters were hydrogenated to afford chiral malonate esters with good to excellent enantioselectivities (up to 99% ee) and high turnover numbers (up to 19000). The results showed that installing an ester group in α,β-unsaturated

  在此，我们报告了一种有效的不对称氢化β-芳基亚烷基丙二酸酯的实用方法。使用针对特定位置的手性螺铱铱催化剂，一系列β-芳基亚烷基丙二酸酯被氢化，得到手性丙二酸酯，具有良好的对映体选择性（高达99％ee）和高周转率（高达19000）。结果表明，在α，β-不饱和羧酸酯中安装酯基显着提高了其不对称氢化反应的效率。
• Synthesis of novel 5-alkyl/aryl/heteroaryl substituted diethyl 3,4-dihydro-2<i>H</i>-pyrrole-4,4-dicarboxylates by aziridine ring expansion of 2-[(aziridin-1-yl)-1-alkyl/aryl/heteroaryl-methylene]malonic acid diethyl esters
  作者：Satish S More、T Krishna Mohan、Y Sateesh Kumar、U K Syam Kumar、Navin B Patel

  DOI：10.3762/bjoc.7.95

  日期：——

  A novel synthetic methodology has been developed for the synthesis of diethyl 5-alkyl/aryl/heteroaryl substituted 3,4-dihydro-2H-pyrrole-4,4-dicarboxylates (also called 2-substituted pyrroline-4,5-dihydro-3,3-dicarboxylic acid diethyl esters) by iodide ion induced ring expansion of 2-[(aziridin-1-yl)-1-alkyl/aryl/heteroaryl-methylene]malonic acid diethyl esters in very good to excellent yields under

  开发了一种新的合成方法，用于合成 5-烷基/芳基/杂芳基取代的 3,4-二氢-2H-吡咯-4,4-二羧酸二乙酯（也称为 2-取代的吡咯啉-4,5-二氢-3 ,3-二羧酸二乙酯）通过碘离子诱导 2-[(氮丙啶-1-基)-1-烷基/芳基/杂芳基-亚甲基]丙二酸二乙酯在温和反应条件下以非常好的收率进行扩环. 已经研究了取代基对 N-乙烯基氮丙啶环扩展为吡咯啉的动力学影响的电子和空间影响。该方法合成了多种不同取代的新型吡咯啉衍生物，其产物可作为合成取代吡咯啉、吡咯和吡咯烷的关键中间体。
• Synthesis of β-Arylacyl<i>/</i>β-Heteroarylacyl-β-alkylidene Malonates and Their Application in Substituted Pyridone Synthesis
  作者：Manoj Balu Wagh、R. Shankar、K. Mini、T. Krishnamohan、M. V. Madhubabu、Abir K. Pal、Sarva Jayaprakash、T. Krishna、Vilas Dahanukar、U. K. Syam Kumar、C. H. Gill

  DOI：10.1002/jhet.991

  日期：2013.1

  developed for the synthesis of β‐arylacyl/β‐heteroarylacyl‐β‐alkylidine malonates in moderate to good yields by the reaction of Stork aryl and heteroaryl enamine with β‐chloroalkylidene malonates. The reaction involves conjugate (Michael) addition of Stork enamine on β‐chloroalkylidene malonates and elimination of chloride ion. These Michael adducts were utilized as intermediates for the synthesis of highly

  通过Stork芳基和杂芳基烯胺与β-氯代亚烷基丙二酸酯的反应，已开发出一种以中等至良好收率合成β-芳基/β-杂芳基-β-烷基丙二酸酯的新方法。反应包括在β-氯亚烷基丙二酸酯上共轭（Michael）添加Stork enamine和消除氯离子。这些迈克尔加合物被用作中间体，通过5 +1环环化法合成高度取代的1,4-二烷基-2-氧代-6-芳基/杂芳基-1,2-二氢吡啶-3-羧酸乙酯。
• Peek, Reinhold; Streukens, Marlies; Thomas, Hans Guenter, Chemische Berichte, 1994, vol. 127, # 7, p. 1257 - 1262
  作者：Peek, Reinhold、Streukens, Marlies、Thomas, Hans Guenter、Vanderfuhr, Andre、Wellen, Ulrich

  DOI：——

  日期：——
• Determination of tautomeric phenotypes of β-thioxo esters and characterization of the tautomeric enethiolic constituents by means of13C NMR spectroscopy
  作者：F. Duus、P. E. Hansen

  DOI：10.1002/mrc.1270220105

  日期：1984.1

  AbstractThe 13C NMR spectra of 28 enethiolizable β‐thioxo esters and 6 enethiolizable β‐thioxo thioloesters have been recorded in order to establish the tautomeric phenotypes of these compounds. All compounds investigated are essentially enethiolic. The carbonyl‐conjugated (Z)‐enethiol form is the exclusive or predominant tautomer of open‐chain β‐thioxo esters and thioloesters, thioacylmalonates and medium‐sized 2‐alkoxycarbonylcycloalkanethiones. The carbonyl‐conjugated (E)‐enethiol form is identifiable for open‐chain α‐unsubstituted β‐thioxo esters and thioloesters, and abundant for open‐chain α‐substituted β‐thioxo esters. Non‐conjugated enethiol forms [i.e. (Z)‐ and (E)‐isomeric β,γ‐unsaturated β‐mercapto esters] are abundant tautomeric constituents of ω‐substituted and higher 2‐alkoxycarbonylcycloalkanethiones. The chemical shifts of the carbon atoms directly involved in the tautomeric change have been rationalized in terms of substituent screening contributions. Deuterium isotope effects on the central carbon atoms of selected deuterio‐enethiolic compounds have been measured in order to depict the ester group rotamerism in CO‐conjugated (Z)‐enethiols. The abundance of the CO‐conjugated (E)‐enethiols, as well as the preferred population of the non‐conjugated (Z)‐enethiol form relative to the non‐conjugated (E)‐enethiol form, is rationalized in terms of the occurrence of a no‐bond interaction between the lone‐pair electrons of the enethiolic sulphur atom and the ‘chelating’ methylene hydrogen atoms of cis‐alkyl groups.