3-(1-methylethoxy)-4-<(trimethylsilyl)ethynyl>cyclobut-3-ene-1,2-dione | 114094-75-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-(1-methylethoxy)-4-<(trimethylsilyl)ethynyl>cyclobut-3-ene-1,2-dione
• 英文别名: 3-isopropoxy-4-(trimethylsilylacetylene)-3-cyclobuten-1,2-dione；3-Propan-2-yloxy-4-(2-trimethylsilylethynyl)cyclobut-3-ene-1,2-dione
• CAS: 114094-75-6
• 化学式: C₁₂H₁₆O₃Si
• 分子量: 236.343
• InChiKey: WXPRHAQZPRPHKC-UHFFFAOYSA-N

物化性质

• 熔点：
  35-36 °C
• 沸点：
  292.1±50.0 °C(Predicted)
• 密度：
  1.06±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 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：

  甲基锂 、 3-(1-methylethoxy)-4-<(trimethylsilyl)ethynyl>cyclobut-3-ene-1,2-dione 以 四氢呋喃 为溶剂， 反应 0.08h， 生成 4-Hydroxy-3-isopropoxy-4-methyl-2-trimethylsilanylethynyl-cyclobut-2-enone
  参考文献：
  名称：

  由1-炔基双环[3.2。]合成角三喹烷。0] hept-2-en-7-ones。串联烷氧基应对环扩展/环过环闭合反应。

  摘要：

  将乙烯基锂试剂加到二烷基方酸衍生的1-炔基双环[3.2.0]庚-2-烯-7-酮（15）的羰基上，然后进行TBAF处理，得到低温阴离子加速的烷氧基-应付通过重排的环状Allene中间体（例如17）进行的重排。这导致形成角稠合的三喹烷（例如20个），其中每个环在功能上是不同的。双环[6.3。0]十一碳二烯酮（例如36）是将反应用碳酸氢盐水溶液而不是TBAF淬灭的主要产物。在类似条件下2-亚烷基-1-炔基双环[3.2。0]庚-7-酮还通过一种机制建立双环[6.3.0]十一碳二烯酮，该机制已建立，涉及在紧张的丙二烯中间体中发生1,5-氢转移。

  DOI：

  10.1021/jo0009503
• 作为产物：
  描述：

  2,3-bis(1-methylethoxy)-4-hydroxy-4-<(trimethylsilyl)-ethynyl>cyclobut-2-en-1-one 在 盐酸 作用下， 以 二氯甲烷 、 水 为溶剂， 以93%的产率得到3-(1-methylethoxy)-4-<(trimethylsilyl)ethynyl>cyclobut-3-ene-1,2-dione
  参考文献：
  名称：

  Cyclobutenediones as precursors to quinones and cyclopentenones

  摘要：

  DOI：

  10.1016/s0040-4020(01)80131-9

文献信息

• Synthesis of substituted cyclobutenediones by the palladium catalyzed cross-coupling of halocyclobutenediones with organostannanes.
  作者：Lanny S. Liebeskind、Jianying Wang

  DOI：10.1016/s0040-4039(00)97604-4

  日期：1990.1

  Halo-substituted cyclobutenediones undergo palladium catalyzed cross-coupling with organostannanes providing a mild method for the synthesis of substituted cyclobutenediones.

  卤代取代的环丁烯二酮经历钯催化与有机锡的交叉偶联，为合成取代的环丁烯二酮提供了温和的方法。
• Nickel-catalyzed ring-opening of α-hydroxycyclobutenones with a remarkable ligand effect
  作者：Songsong Gao、Xiangdong Hu

  DOI：10.1039/c7cc03340k

  日期：——

  A Ni-catalyzed ring-opening of α-hydroxycyclobutenones is reported herein. A remarkable ligand effect was observed during transformations following the ring-opening. The employment of PPh3 leads to the formation of 2-furanones 2 through a migration of an alkoxyl group, and 2-furanones 3 were generated through a migration of hydrogen in the presence of Xantphos, affording a divergent approach to 2-furanones

  本文报道了Ni催化的α-羟基环丁烯酮的开环。开环后的转化过程中观察到了显着的配体效应。PPh3的使用通过烷氧基的迁移导致形成2-呋喃酮2，而在Xantphos的存在下通过氢的迁移生成了2-呋喃酮3，从而提供了一种具有多种功能的2-呋喃酮的发散方法。组。
• Formation of 2-halomethylene-4-cyclopentene-1,3-diones and/or 2-halo-1,4-benzoquinones via ring-expansion of 4-ethynyl-4-hydroxy-2,3-substituted-2-cyclobuten-1-ones. Total synthesis of methyl linderone
  作者：Hong Yin、Shubhada W. Dantale、Novruz G. Akhmedov、Björn C.G. Söderberg

  DOI：10.1016/j.tet.2013.08.050

  日期：2013.11

  -2,3-substituted-2-cyclobuten-1-ones with N-bromo- or N-iodosuccinimide, affording in most cases 2-halomethylene-4-cyclopentene-1,3-dione, is described. This reaction was used in a short total synthesis of methyl linderone.

  的4-（乙炔基）的反应的深入研究-4-羟基-2,3-二取代-2-环丁烯-1-酮与Ñ溴代或ñ碘代丁二酰亚胺，在大多数情况下2- halomethylene-得到描述了4-环戊烯-1，3-二酮。该反应被用于短时间的甲基邻苯二酚全合成。
• The Squarate Ester−Polyquinane Connection. An Analysis of the Capacity of Achiral Divinyl Adducts To Rearrange Spontaneously to Polycyclic Networks Housing Multiple Stereogenic Centers
  作者：Leo A. Paquette、Tina M. Morwick

  DOI：10.1021/ja963214i

  日期：1997.2.1

  The condensation of diisopropyl squarate and related cyclobutene-1,2-diones with 2 equiv of the same alkenyl anion or 1 equiv each of two different alkenyl anions can be a very effective method for the highly stenocontrolled synthesis of di-, tri-, and tetraquinanes. Two reaction cascades have been identified, The most prevalent and often exclusive reaction course is triggered by trans 1,2-addition of the two nucleophiles. Two consecutive conrotatory processes subsequently arise to deliver a doubly charged eight-membered ring intermediate, protonation of which leads to transannular adolization. The second option begins with cis 1,2-addition, this event triggering structural reorganization via a dianionic oxy-Cope rearrangement, When the alkenyl anions are sufficiently substituted, the two pathways are distinguishable on stereochemical grounds, A minor pathway consisting of trans 1,4-addition is seen to operate in certain contexts, especially when the alkenyllithium is ''soft''. Acetylide anions can also be utilized successfully; in such cases, the benefit of regiocontrolled protonation surfaces and gives rise to a single product, Other aspects of these complex tandem reactions have been investigated and are discussed.
• An improved method for the synthesis of substituted cyclobutenediones
  作者：Lanny S. Liebeskind、Richard W. Fengl、Kevin R. Wirtz、Thomas T. Shawe

  DOI：10.1021/jo00246a017

  日期：1988.5