3-ethoxy-4-n-butyl-3-cyclobutene-1,2-dione | 113976-76-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-ethoxy-4-n-butyl-3-cyclobutene-1,2-dione
• 英文别名: 3-butyl-4-ethoxy-cyclobut-3-ene-1,2-dione；2-ethoxy-4-butyl-3-cyclobutene-1,2-dione；3-ethoxy-4-butyl-3-cyclobutene-1,2-dione；3-Butyl-4-ethoxy-3-cyclobutene-1,2-dione；3-butyl-4-ethoxycyclobut-3-ene-1,2-dione
• CAS: 113976-76-4
• 化学式: C₁₀H₁₄O₃
• 分子量: 182.219
• InChiKey: ANCPAAFBWTZQOR-UHFFFAOYSA-N

物化性质

• 沸点：
  284.8±50.0 °C(Predicted)
• 密度：
  1.07±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-ethoxy-4-n-butyl-3-cyclobutene-1,2-dione 在 三氟乙酸酐 作用下， 以 吡啶 、 丙酮 为溶剂， 生成 [2-(2-Butyl-3,4-dioxo-cyclobut-1-enylamino)-ethyl]-trimethyl-ammonium; iodide
  参考文献：
  名称：

  Thermodynamic characterization of the squaramide–carboxylate interaction in squaramide receptors

  摘要：

  The thermodynamic characterization of squaramides is described. This fundamental information shows that the association in chloroform or DMSO is mainly exothermic. In contrast, in MeOH the equilibrium is endothermic and is entropically driven. The data shows the influence of a squaramide ring alone, modified or combined with tetraalkylammonium groups as the binding subunit for molecular recognition. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(01)00880-2
• 作为产物：
  描述：

  4-n-butyl-2,3-diethoxy-4-hydroxy-2-cyclobuten-1-one 在 吡啶 、 三氟乙酸酐 作用下， 以 乙醚 为溶剂， 反应 0.25h， 以81%的产率得到3-ethoxy-4-n-butyl-3-cyclobutene-1,2-dione
  参考文献：
  名称：

  Synthesis of 4-substituted-3-alkoxy-3-cyclobutene-1,2-diones

  摘要：

  DOI：

  10.1021/jo00246a016

文献信息

• Convergent Synthesis of Azabicycloalkenones using Squaric Acid as Platform
  作者：Yoshihiko Yamamoto、Shoji Kuwabara、Hiroki Hayashi、Hisao Nishiyama

  DOI：10.1002/adsc.200606097

  日期：2006.11

  The synthesis of azabicycloalkenones bearing a vinylogous amide moiety was achieved by means of the rhodium-catalyzed decarbonylative cycloaddition of cyclobutenediones with a pendant alkene. The starting cyclobutenediones were efficiently prepared from appropriate squaric acid monoesters and N-benzylalkenylamines under microwave heating conditions.

  带有乙烯基酰胺部分的氮杂双环烯酮的合成是通过铑催化的环丁二烯与侧链烯烃的脱羰环加成反应而实现的。在微波加热条件下，由合适的方酸单酯和N-苄基烯基胺有效地制备了起始的环丁烯二酮。
• Triethyloxonium Tetrafluoroborate Mediated Addition Reaction of Unsaturated Organosilanes to Squaric Acid Esters
  作者：Yoshihiko Yamamoto、Keiko Nunokawa、Kohichi Okamoto、Masatomi Ohno、Shoji Eguchi

  DOI：10.1055/s-1995-3944

  日期：1995.5

  Squaric acid esters were treated with triethyloxonium tetrafluoroborate at room temperature to produce ethoxycarbenium ion species, and subsequent addition of trimethylsilyl cyanide (TMSCN) to this intermediate at 0°C afforded O-ethyl cyanohydrins in fair to good yields. In a similar manner, the ester reacted effectively with silyl enol ether and silyl ketene acetal to give the corresponding O-ethylated addition products. On the other hand the reaction with allylsilanes preferred the formation of 1:2 adducts.

  室温下，将斯夸酸酯与三乙基氧鎓四氟硼酸盐反应，生成乙氧基碳鎓离子，随后在0°C下向该中间体中加入三甲基硅基氰（TMSCN），以较好至良好的产率得到O-乙基氰醇。类似地，酯与硅基烯醇醚和硅基烯酮缩醛有效反应，生成相应的O-乙基加成产物。另一方面，该反应与烯丙基硅烷反应时，倾向于生成1:2加成物。
• Ring transformation of 4-acylmethyl-2-chloro-4-hydroxy-2-cyclobutenone to γ-acylmethylenetetronate by thermal rearrangement: New synthetic aspect of squaric acid as a C4-synthon
  作者：Yoshihiko Yamamoto、Masatomi Ohno、Shoji Eguchi

  DOI：10.1016/s0040-4020(01)85262-5

  日期：1994.1

  TiCl4-catalyzed addition of a silyl enol ether to squaric acid dichloride and ester chloride were subjected to thermolysis (reflux in an aromatic solvent), and γ -acylmethylenetetronates were obtained stereoselectively with (Z)-geometry via an α,β unsaturated chloroketene intermediate. The mechanism, application of this novel rearrangement to synthesis of basidalin and related photolysis were described

  将由TiCl 4催化的甲硅烷基烯醇醚加到方酸二氯化物和酯氯化物中制备的标题环丁烯酮进行热分解（在芳族溶剂中回流），然后通过（Z）几何结构通过α立体选择得到γ-酰基亚甲基四酸酯，β不饱和氯乙烯中间体。描述了这种新颖的重排在basidalin合成和相关光解中的机理，应用。
• Ring Expansion of Diazo-Functionalized 4-Hydroxycyclobutenone:  Catalytic Ring Opening and Recyclization to 2(5<i>H</i>)-Furanone/Cyclopentenedione and Thermal 4π−8π Electrocyclic Ring Opening−Closure to Diazepinedione
  作者：Masatomi Ohno、Masashi Noda、Yoshihiko Yamamoto、Shoji Eguchi

  DOI：10.1021/jo980523d

  日期：1999.2.1

  cyclopentene-1,3-dione via an alpha-carbocation intermediate and a carbenoid (carbene) intermediate, respectively. Thermal rearrangement of some of these compounds led to the formation of diazepinediones without the extrusion of nitrogen through tandem 4pi electrocyclic ring opening and 8pi electrocyclic ring closure processes.

  在C-4处带有重氮基团的4-羟基环丁烯酮经酸催化和Rh催化（也光催化）分解，通过α-羰基化中间体和a生成2（5H）-呋喃酮和/或环戊烯-1,3-二酮。类胡萝卜素（卡宾）中间体。其中一些化合物的热重排导致二氮杂二酮的形成而没有通过串联的4pi电动开环和8pi电动闭环过程挤出氮气。
• Rearrangement of 4-alkynylcyclobutenones. A new synthesis of 1,4-benzoquinones
  作者：Lafayette D. Foland、J. Olle Karlsson、Steven T. Perri、Rudolf Schwabe、Simon L. Xu、Sanjay Patil、Harold W. Moore

  DOI：10.1021/ja00185a030

  日期：1989.2