2,2-dimethyl-7-(trimethylsilyl)-5-hepten-3-one

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,2-dimethyl-7-(trimethylsilyl)-5-hepten-3-one
• 英文别名: 5-Hepten-3-one, 2,2-dimethyl-7-trimethylsilyl-；(E)-2,2-dimethyl-7-trimethylsilylhept-5-en-3-one
• 化学式: C₁₂H₂₄OSi
• 分子量: 212.407
• InChiKey: AHHMAUWPUSTLNZ-BQYQJAHWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.89
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  6,6-dimethyl-1-(trimethylsilyl)-5-(trimethylsilyloxy)-2,4-heptadiene 以 甲醇 、 水 为溶剂， 以49%的产率得到2,2-dimethyl-7-(trimethylsilyl)-5-hepten-3-one
  参考文献：
  名称：

  d 5双去质子化的γ，δ-不饱和羰基衍生物与亲电试剂的反应。合成四氢呋喃和四氢吡喃衍生物的新方法† ‡

  摘要：

  的二烯酮-二价阴离子衍生物1与所有类型的测试电体（烷基卤化物，甲硅烷基氯化物，酯，酮，醛，环氧化物）反应，得到β，类型的γ不饱和羰基化合物甲（见公式2 - 6，13，14和表1-5）。由1a - 1d获得的α-和β-羟烷基化产物可以分别转化成四氢呋喃和四氢吡喃衍生物7和16（表1和2），它们是由硫类似物1e和1f得到的。到烯酮缩醛9和二烯酮衍生物10和12的吨丁基和α羟基酮被切割，得到腈，酰胺，羧酸和酯（式16 - 25）。试剂1允许合成产品与远方的官能团在一个步骤中（参见1,8-二酮14和公式26 - 30）; 它们对应于d 5的合成子31 - 33 ; 在表6中，将它们与其他d 5试剂进行了比较。

  DOI：

  10.1002/hlca.19820650202

文献信息

• 1,4-Carbosilylation of 1,3-Dienes via Palladium Catalyzed Three-Component Coupling Reaction
  作者：Yasushi Obora、Yasushi Tsuji、Takashi Kawamura

  DOI：10.1021/ja00144a005

  日期：1995.10

  Three-component coupling reaction of acid chlorides, organodisilanes, and 1,3-dienes achieves 1,4-carbosilylation of the 1,3-dienes to afford allylic silanes as the product. Bis(dibenzylideneacetone)palladium, a naked Pd(0) complex without donating ligand, showed high catalytic activity. A carbon and a silicon substituent are introduced at 1- and 4-positions of the 1,3-dienes regio- and stereoselectively with concomitant decarbonylation of the acid chlorides. A wide variety of allylic silanes are synthesized in high yields from these easily accessible substrates. On the other hand, a bully acid chloride such as adamantane-1-carboxylic acid chloride did not undergo the decarbonylation reaction but afforded allylic silanes containing acyl functionality. In all these reactions, transmetalation of the disilanes with eta(3)-allylchloropalladium intermediates might be a critical step in the catalytic cycle. As a model reaction for the transmetalation, reaction of di-mu-chlorobis[(1,2,3-eta)-4-phenyl-2-butenyl]dipalladium with disilanes was carried out. Although intermediate eta(3)-allylsilylpalladium species could not be detected, the corresponding allylic silanes, silyl chlorides, and Pd(0) metal were formed during the reaction. Furthermore, a similar three-component coupling reaction using aryl iodides, organosilylstannanes, and dienes also proceeded. However, the selectivity and the yield decreased considerably.
• SEEBACH, D.;POHMAKOTR, M.;SCHREGENBERGER, C.;WELDMANN, B.;MALI, R. S.;POH+, HELV. CHIM. ACTA, 1982, 65, N 2, 419-450
  作者：SEEBACH, D.、POHMAKOTR, M.、SCHREGENBERGER, C.、WELDMANN, B.、MALI, R. S.、POH+

  DOI：——

  日期：——
• d5-Reactions of Doubly Deprotonated ?,?-Unsaturated Carbonyl Derivatives with Electrophiles. A Novel Approach to the Synthesis of Tetrahydrofuran and Tetrahydropyran Derivatives
  作者：Dieter Seebach、Manat Pohmakotr、Christian Schregenberger、Beat Weidmann、Raghao S. Mali、Srisuke Pohmakotr

  DOI：10.1002/hlca.19820650202

  日期：1982.3.17

  tested (alkyl halide, silyl chloride, ester, ketone, aldehyde, epoxide) to give β, γ-unsaturated carbonyl compounds of type A (see Formulae2–6, 13, 14 and Tables 1–5). The α- and β-hydroxyalkylation products obtained from 1a–1d can be converted to tetra-hydrofuran and tetrahydropyran derivatives 7 and 16, respectively (Tables 1 and 2), those from the sulfur analogues 1e and 1f to ketene thioacetals

  的二烯酮-二价阴离子衍生物1与所有类型的测试电体（烷基卤化物，甲硅烷基氯化物，酯，酮，醛，环氧化物）反应，得到β，类型的γ不饱和羰基化合物甲（见公式2 - 6，13，14和表1-5）。由1a - 1d获得的α-和β-羟烷基化产物可以分别转化成四氢呋喃和四氢吡喃衍生物7和16（表1和2），它们是由硫类似物1e和1f得到的。到烯酮缩醛9和二烯酮衍生物10和12的吨丁基和α羟基酮被切割，得到腈，酰胺，羧酸和酯（式16 - 25）。试剂1允许合成产品与远方的官能团在一个步骤中（参见1,8-二酮14和公式26 - 30）; 它们对应于d 5的合成子31 - 33 ; 在表6中，将它们与其他d 5试剂进行了比较。