草酸单异丙酯 | 57727-06-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: 草酸单异丙酯
• 英文名称: 2-(isopropoxy)-2-oxoacetic acid
• 英文别名: monoisopropyl oxalate；Oxalic acid monoisopropyl ester；2-oxo-2-propan-2-yloxyacetic acid
• CAS: 57727-06-7
• 化学式: C₅H₈O₄
• mdl: MFCD19228245
• 分子量: 132.116
• InChiKey: SXZMAVLCDKNPTD-UHFFFAOYSA-N

物化性质

• 沸点：
  210.0±23.0 °C(Predicted)
• 密度：
  1.205±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  63.6
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  草酸单异丙酯 在 正丁基锂 作用下， 以 乙醚 、 正己烷 为溶剂， 反应 18.5h， 生成 isopropyl 2-oxo-4-(trimethylsilyl)but-3-ynoate
  参考文献：
  名称：

  阳离子手性钯催化的“乙炔” Diels-Alder反应：对映选择性逆转的计算分析

  摘要：

  乙二烯亲二烯体的高对映选择性Diels-Alder反应被阳离子手性钯配合物有效催化。不仅程度，而且对映选择性的感觉也严格取决于配体的空间需求。计算分析表明，空间需求量不会影响二烯的内/外选择性，但会影响二烯的对映体选择性。

  DOI：

  10.1002/asia.201801035
• 作为产物：
  描述：

  阿法替尼杂质77 在 水 作用下， 生成 草酸单异丙酯
  参考文献：
  名称：

  Synthesis, Crystal Structure, and Insecticidal Activity of Novel N-Alkyloxyoxalyl Derivatives of 2-Arylpyrrole

  摘要：

  Two series of novel N-alkyloxyoxalyl derivatives of 2-arylpyrrole were synthesized, and their structures were characterized by (1)H NMR spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis. The insecticidal activities of the new compounds were evaluated. The results of bioassays indicated that some of these title compounds exhibited excellent insecticidal activities, and their insecticidal activities against oriental armyworm, mosquito, and spider mite are comparable to those of the commercialized Chlorfenapyr.

  DOI：

  10.1021/jf801311h

文献信息

• Metal-, Photocatalyst-, and Light-Free Minisci C–H Alkylation of <i>N</i>-Heteroarenes with Oxalates
  作者：Jianyang Dong、Zhen Wang、Xiaochen Wang、Hongjian Song、Yuxiu Liu、Qingmin Wang

  DOI：10.1021/acs.joc.9b00972

  日期：2019.6.7

  for metal-, photocatalyst-, and light-free Minisci C–H alkylation reactions of N-heteroarenes with alkyl oxalates derived from primary, secondary, and tertiary alcohols. The protocol uses environmentally benign persulfate as a stoichiometric oxidant and does not require high temperatures or large excesses of either of the substrates, making the procedure suitable for late-stage C–H alkylation of complex

  在此，我们报告了N-杂芳烃与衍生自伯醇、仲醇和叔醇的草酸烷基酯的无金属、光催化剂和无光 Minisci C-H 烷基化反应的温和方案。该协议使用对环境无害的过硫酸盐作为化学计量氧化剂，不需要高温或任何一种底物的大量过量，使得该程序适用于复杂分子的后期 C-H 烷基化。值得注意的是，可以使用该协议对几种药物和天然产品进行功能化或制备，从而证明其实用性。
• A New Selective Method for the Homolytic Alkylation and Carboxylation of Quinones by Monoesters of Oxalic Acid
  作者：Fausta Coppa、Francesca Fontana、Edoardo Lazzarini、Francesco Minisci

  DOI：10.1246/cl.1992.1299

  日期：1992.7

  Alkyl and alkoxycarbonyl radicals were generated by oxidative decarboxylation of oxalic acid monoesters by persulfate; they were then utilized for the selective substitution of quinones.

  草酸单酯被过硫酸盐氧化脱羧生成烷基和烷氧羰基；然后将它们用于醌的选择性取代。
• Template-free sol–gel synthesis of high surface area mesoporous silica based catalysts for esterification of di-carboxylic acids
  作者：Pavan M. More、Shubhangi B. Umbarkar、Mohan K. Dongare

  DOI：10.1016/j.crci.2016.02.001

  日期：2016.10

  Résumé High surface area mesoporous silica based catalysts have been prepared by a simple hydrolysis/sol–gel process without using any organic template and hydrothermal treatment. A controlled hydrolysis of ethyl silicate-40, an industrial bulk chemical, as a silica precursor, resulted in the formation of very high surface area (719 m2/g) mesoporous (pore size 67 Å and pore volume 1.19 cc/g) silica. The formation of mesoporous silica has been correlated with the polymeric nature of the ethyl silicate-40 silica precursor which on hydrolysis and further condensation forms long chain silica species which hinders the formation of a close condensed structure thus creating larger pores resulting in the formation of high surface mesoporous silica. Ethyl silicate-40 was used further for preparing a solid acid catalyst by supporting molybdenum oxide nanoparticles on mesoporous silica by a simple hydrolysis sol–gel synthesis procedure. The catalysts showed very high acidity as determined by NH3-TPD with the presence of Lewis as well as Brønsted acidity. These catalysts showed very high catalytic activity for esterification; a typical acid catalyzed organic transformation of various mono- and di-carboxylic acids with a range of alcohols. The in situ formed silicomolybdic acid heteropoly-anion species during the catalytic reactions were found to be catalytically active species for these reactions. Ethyl silicate-40, an industrial bulk silica precursor, has shown a good potential for its use as a silica precursor for the preparation of mesoporous silica based heterogeneous catalysts on a larger scale at a lower cost.

  摘要 通过一种简单的溶胶-凝胶水解过程，无需任何有机模板和水热处理，制备了具有高比表面积的介孔硅基催化剂。以工业大宗化学品硅酸乙酯-40作为硅源，进行可控水解，形成了具有极高比表面积（719 m²/g）的介孔硅（孔径67 Å，孔体积1.19 cc/g）。介孔硅的形成与硅酸乙酯-40硅源的聚合物性质有关，其在水解和进一步缩合过程中形成长链硅物种，阻碍了致密结构的形成，从而创造了大孔，形成了具有高比表面积的介孔硅。硅酸乙酯-40进一步用于通过简单的溶胶-凝胶水解合成过程，在介孔硅上负载氧化钼纳米颗粒，制备固体酸催化剂。催化剂显示极高的酸性，由NH3-TPD测定显示存在Lewis酸和Brønsted酸。这些催化剂在酯化反应中表现出极高的催化活性，这是一种典型的酸催化有机转化反应，涉及各种单和二羧酸与一系列醇的反应。在催化反应中现场形成的硅钼酸杂多阴离子被发现是这些反应的活性物种。硅酸乙酯-40作为一种工业大宗硅源，展现了其在更大规模、更低成本上作为硅源，用于制备介孔硅基异质催化剂的良好潜力。
• C–H Alkylation of Heteroarenes with Alkyl Oxalates by Molecular Photoelectrocatalysis
  作者：Hai-Chao Xu、Fan Xu、Xiao-Li Lai

  DOI：10.1055/a-1296-8652

  日期：2021.3

  An oxidant- and metal-free photoelectrocatalytic C–H alkylation reaction of heteroarenes with alkyl oxalates has been developed. Several classes of heteroaromatics, such as quinolines, isoquinolines, pyridines, and phenanthridines, can be alkylated with tertiary or secondary alkyl oxalates. The photoelectrochemical synthesis employs 2,4,5,6-tetra-9H-carbazol-9-ylisophthalonitrile as a molecular catalyst

  杂芳烃与草酸烷基酯的无氧化剂和无金属光电催化C-H烷基化反应已被开发。几类杂芳烃，例如喹啉、异喹啉、吡啶和菲啶，可以用草酸叔或仲烷基酯进行烷基化。光电化学合成使用 2,4,5,6-四-9H-咔唑-9-基间苯二甲腈作为分子催化剂，并允许氧化转化通过放出氢气进行，而无需牺牲化学氧化剂。
• Bicyclic Guanidine‐Catalyzed Direct Asymmetric Allylic Addition of <i>N</i> ‐Aryl Alkylidene‐Succinimides
  作者：Jianmin Wang、Hongjun Liu、Yitian Fan、Yuanyong Yang、Zhiyong Jiang、Choon‐Hong Tan

  DOI：10.1002/chem.201002183

  日期：2010.11.8

  Enantio‐enriched maleimides and succinimides that can be used to prepare aza‐heterocycles with multiple chiral centers are obtained from the bicyclic guanidine‐catalyzed direct asymmetric allylic addition of N‐aryl alkylidene‐succinimides to imines. NMR studies and deuterium‐exchange experiments were used to study the intermediates in the reaction.

  对映体富集的马来酰亚胺和琥珀酰亚胺可用于制备具有多个手性中心的氮杂杂环，是从N-芳基亚烷基琥珀酰亚胺向亚胺的双环胍催化的直接不对称烯丙基加成反应中获得的。NMR研究和氘交换实验用于研究反应中的中间体。