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dimethyl 2-(tert-butyldimethylsilyloxy)-3-diazo-2-(3-(triethylsilyloxy)butyl)succinate | 294676-21-4

中文名称
——
中文别名
——
英文名称
dimethyl 2-(tert-butyldimethylsilyloxy)-3-diazo-2-(3-(triethylsilyloxy)butyl)succinate
英文别名
methyl 3-tert-butyldimethylsilyloxy-2-diazo-6-(triethylsilyloxy)-3-(methoxycarbonyl)heptanoate;Dimethyl 2-[tert-butyl(dimethyl)silyl]oxy-3-diazo-2-(3-triethylsilyloxybutyl)butanedioate
dimethyl 2-(tert-butyldimethylsilyloxy)-3-diazo-2-(3-(triethylsilyloxy)butyl)succinate化学式
CAS
294676-21-4
化学式
C22H44N2O6Si2
mdl
——
分子量
488.772
InChiKey
NRIONYVRWTWELY-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):
    4.95
  • 重原子数:
    32
  • 可旋转键数:
    16
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.86
  • 拓扑面积:
    73.1
  • 氢给体数:
    0
  • 氢受体数:
    7

反应信息

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文献信息

  • Synthetic and computational studies on the tricarboxylate core of 6,7-dideoxysqualestatin H5 involving a carbonyl ylide cycloaddition–rearrangement
    作者:David M. Hodgson、Carolina Villalonga-Barber、Jonathan M. Goodman、Silvina C. Pellegrinet
    DOI:10.1039/c004496b
    日期:——
    Reaction of diazodiketoesters 17 and 28 with methyl glyoxylate in the presence of catalytic rhodium(II) acetate generates predominantly the 6,8-dioxabicyclo[3.2.1]octanes 29 and 30, respectively. Acid-catalysed rearrangement of the corresponding alcohol 31 favours, at equilibrium, the 2,8-dioxabicyclo[3.2.1]octane skeleton 33 of the squalestatins–zaragozic acids. Force field calculations on the position of the equilibrium gave misleading results. DFT calculations were correct in suggesting that the energy difference between 31 and 33 should be small, but did not always suggest the right major product. Calculation of the NMR spectra of the similar structures could be used to assign the isomers with a high level of confidence.
    二氮二酮酸酯17和28与甲基乙二醛在催化性醋酸(II)的存在下反应,主要生成6,8-二氧双环[3.2.1]辛烷29和30。相应的醇31的酸催化重排在平衡时更倾向于形成鲨烯类和萨拉戈酸的2,8-二氧双环[3.2.1]辛烷骨架33。关于平衡位置的力场计算结果令人误解。密度泛函理论(DFT)计算正确地表明31与33之间的能量差应较小,但并不总是指示出正确的主要产物。对类似结构的核磁共振(NMR)谱的计算可以用来高平地确定异构体。
  • Squarate desymmetrisation–ozonolysis as an approach to β-substituted-α-ketosuccinates and squalestatin synthesis
    作者:Herman O. Sintim、Anne Valade、David C. Harling、David M. Hodgson
    DOI:10.1016/j.tet.2019.130747
    日期:2019.12
    Silylated tertiary alcohols from 1,2-addition of alkyllithiums to dialkyl squarates undergo alkene ozonolysis to give beta-substituted-alpha-keto-beta-(silyloxy)succinates. With 3-(triethylsilyloxy)butyllithium the methodology was applied to the 2,8-dioxabicyclo[3.2.1]octane core of the squalestatins. Enantioselective 1,2-addition to di-tert-butyl squarate using butyllithium or diethylzinc/Ti(iPrO)(4) in the presence of chiral ligands (such as bisoxazolines or camphorsulfonamides, respectively) gave the corresponding tertiary alcohols in up to 67.5:32.5 er. (C) 2019 Elsevier Ltd. All rights reserved.
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