dimethyl[(1S)-1-methyl-1-(2-phenylethyl)prop-2-en-1-yl]phenylsilane | 1270304-89-6

• 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: dimethyl[(1S)-1-methyl-1-(2-phenylethyl)prop-2-en-1-yl]phenylsilane
• CAS: 1270304-89-6
• 化学式: C₂₀H₂₆Si
• 分子量: 294.512
• InChiKey: MZZBHSWKEBTZOG-HXUWFJFHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.18
• 重原子数：
  21.0
• 可旋转键数：
  6.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  dimethyl[(1S)-1-methyl-1-(2-phenylethyl)prop-2-en-1-yl]phenylsilane 在 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 臭氧 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 0.5h， 生成
  参考文献：
  名称：

  Reversible 1,3-anti/syn-Stereochemical Courses in Copper-Catalyzed γ-Selective Allyl–Alkyl Coupling between Chiral Allylic Phosphates and Alkylboranes

  摘要：

  The stereochemical courses of the copper-catalyzed allyl-alkyl coupling between enantioenriched chiral allylic phosphates and alkylboranes were switchable between 1,3-anti and 1,3-syn selectivities by the choice of solvents and achiral alkoxide bases with different steric demands. The reactions with gamma-silylated allylic phosphates allow efficient synthesis of enantioenriched chiral allylsilanes with tertiary or quaternary carbon stereogenic centers. Cyclic and acyclic bimodal participation of alkoxyborane species in an organocopper addition-elimination sequence is proposed to account for the phenomenon of the anti/syn-stereochemical reversal.

  DOI：

  10.1021/ja302520h
• 作为产物：
  描述：

  (1S)-1-[dimethyl(phenyl)silyl]-3-phenylpropyl diisopropylcarbamate 在 四甲基乙二胺 、 仲丁基锂 作用下， 以 四氢呋喃 、 乙醚 、 环己烷 为溶剂， 反应 6.0h， 生成 dimethyl[(1S)-1-methyl-1-(2-phenylethyl)prop-2-en-1-yl]phenylsilane
  参考文献：
  名称：

  Asymmetric Synthesis of Tertiary and Quaternary Allyl- and Crotylsilanes via the Borylation of Lithiated Carbamates

  摘要：

  Tertiary allyl- or crotylsilanes have been prepared in high er and dr via the lithiation-borylation reaction of alkyl carbamates with silaboronates. Using a related strategy, quaternary allylsilanes could be accessed in similarly high er.

  DOI：

  10.1021/ol200177f

文献信息

• Enantioselective Synthesis of α-Tri- and α-Tetrasubstituted Allylsilanes by Copper-Catalyzed Asymmetric Allylic Substitution of Allyl Phosphates with Silylboronates
  作者：Momotaro Takeda、Ryo Shintani、Tamio Hayashi

  DOI：10.1021/jo400888b

  日期：2013.5.17

  copper/N-heterocyclic carbene-catalyzed asymmetric allylic substitution of allyl phosphates with a silylboronate has been developed to give highly enantioenriched allylsilanes. High regioselectivity has been achieved by employing NaOH as the base, and this catalyst system is effective for both γ-mono- and disubstituted allyl phosphates.

  已经开发了铜/ N-杂环卡宾催化的用甲硅烷基硼酸酯的磷酸烯丙酯的不对称烯丙基取代基，以得到高度对映体富集的烯丙基硅烷。通过使用NaOH作为碱已经实现了高区域选择性，并且该催化剂体系对于γ-单-和二取代的烯丙基磷酸酯都是有效的。
• Transition‐Metal‐Free Synthesis of Enantioenriched Tertiary and Quaternary α‐Chiral Allylsilanes
  作者：Rubén Pérez Sevillano、Franck Ferreira、Olivier Jackowski

  DOI：10.1002/chem.202302227

  日期：2023.10.23

  Enantioenriched tertiary and quaternary α-chiral allylsilanes have been obtained by metal-free asymmetric allylic alkylation of γ-substituted primary allylic bromides with primary alkyl Grignard reagents activated by a chiral Alexakis-type NHC ligand.

  对映体富集的叔和季α-手性烯丙基硅烷是通过手性Alexakis型NHC配体活化的伯烷基格氏试剂对γ-取代的伯烯丙基溴化物进行无金属不对称烯丙基烷基化而获得的。