1,1-Diphenyl-3-(4-methyl-3-pentenyl)silacyclopent-3-ene | 133448-07-4

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 1,1-Diphenyl-3-(4-methyl-3-pentenyl)silacyclopent-3-ene
• 英文别名: 3-(4-methylpent-3-en-1-yl)-1,1-diphenyl-2,5-dihydro-1H-silole；3-(4-Methylpent-3-enyl)-1,1-diphenyl-2,5-dihydrosilole
• CAS: 133448-07-4
• 化学式: C₂₂H₂₆Si
• 分子量: 318.534
• InChiKey: WVGKNDVSWTUNSB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.94
• 重原子数：
  23
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  月桂烯 、 二苯二氯硅烷 在 magnesium 作用下， 生成 1,1-Diphenyl-3-(4-methyl-3-pentenyl)silacyclopent-3-ene
  参考文献：
  名称：

  Chemistry of substituted (2-butene-1,4-diyl)magnesium: a facile approach to complex carbocycles, functionalized ketones and alcohols, and silicon-containing heterocycles

  摘要：

  Highly reactive magnesium reacts with a wide variety of substituted 1,3-dienes to give the corresponding substituted (2-butene-1,4-diyl)magnesium complexes. Reactions of symmetrical (2-butene-1,4-diyl)magnesium with alpha,omega-alkylene dihalides form three-, four-, five-, and six-membered carbocycles. Significantly, the cyclizations are always stereospecific and completely regioselective. Depending on the initial 1,3-diene and specific electrophiles, uncyclized products can be obtained. Stepwise reactions of (2,3-dimethyl-2-butene-1,4-diyl)magnesium with two different electrophiles afford polyfunctionalized ketones with the generation of a quaternary center. Formal 1,2-additions can be effected in this manner. Substituted five- and six-membered cyclic ketones can also be synthesized in one step by this approach. Treatment of unsymmetrical (2-butene-1,4-diyl)magnesium complexes with triorganosilyl chlorides followed by cyclohexanone results in additions across a terminal double bond with high regioselectivity. Silicon-containing heterocycles or spiro compounds can be readily synthesized by using the bis-Grignard reagents.

  DOI：

  10.1021/jo00009a034

文献信息

• Synthesis of Disilanes, Dihydrosiloles, and 1,4‐Disilacyclohexa‐2,5‐dienes by Transition‐Metal‐Free Transfer of Diphenylsilylene and Dimethylsilylene from Silylboronic Esters
  作者：Ikuo Sasaki、Asahi Maebashi、Jiaying Li、Toshimichi Ohmura、Michinori Suginome

  DOI：10.1002/ejoc.202101573

  日期：2022.3.29

  Transfer of diphenylsilylene (Ph2Si:) and dimethylsilylene (Me2Si:) from silylboronic esters takes place at 110–135 °C under transition-metal-free conditions. The reaction with alkoxysilanes, 1,3-dienes, and an alkyne affords alkoxydisilanes, dihydrosiloles, and 1,4-disilacyclohexa-2,5-dienes, respectively, in good to high yields.

  在无过渡金属条件下，在 110–135 °C 下，从甲硅烷基硼酸酯中转移二苯基甲硅烷基 (Ph 2 Si:) 和二甲基甲硅烷基 (Me 2 Si:)。与烷氧基硅烷、1,3-二烯和炔烃的反应分别以良好至高产率提供烷氧基二硅烷、二氢硅烷和 1,4-二硅环六-2,5-二烯。