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3-tert-butylcyclopentenyllithium | 178100-98-6

中文名称
——
中文别名
——
英文名称
3-tert-butylcyclopentenyllithium
英文别名
——
3-tert-butylcyclopentenyllithium化学式
CAS
178100-98-6
化学式
C9H15Li
mdl
——
分子量
130.159
InChiKey
XRPWVLUPTSXIGR-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    2.49
  • 重原子数:
    10.0
  • 可旋转键数:
    0.0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.78
  • 拓扑面积:
    0.0
  • 氢给体数:
    0.0
  • 氢受体数:
    0.0

反应信息

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文献信息

  • Probe of the Stereochemically Determining Step in Squarate Ester Cascades. Proof that Helical Equilibration within the Octatetraene Intermediate Is Responsible and Definition of Steric Control Elements
    作者:Leo A. Paquette、Ashton T. Hamme、Lung Huang Kuo、Julien Doyon、Rüdiger Kreuzholz
    DOI:10.1021/ja9632163
    日期:1997.2.1
    The stereoselectivity associated with the coaddition of a chiral and an achiral cycloalkenyl anion to a squarate ester has been examined. The selective formation of polycyclic ketones is observed in all cases, although dual protonation at both of the available enolate sites in their penultimate cyclooctatrienyl dianion precursors was sometimes noted. Proof that the stereoselection was the result of interconversion between a pair of helical octateraene intermediates, with resultant erosion of original stereogenicity, was established by isolation of diastereomeric monoadducts and separate submission of these hydroxy cyclobutenones to the original reaction conditions. The final stages of the cascade proceed via the lower energy transition state option where nonbonded steric effects are skirted as much as possible. These features are coordinated with subsequent stereocontrolled trans/annular aldol reactions during the quenching process. The adherence to these mechanistic guidelines is so all-encompassing that product sterochemistry can be reliably predicted from the outset.
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