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(E)-4-methyl-5-oxopent-3-enoic acid methyl ester | 155688-25-8

中文名称
——
中文别名
——
英文名称
(E)-4-methyl-5-oxopent-3-enoic acid methyl ester
英文别名
methyl (E)-4-methyl-5-oxopent-3-enoate
(E)-4-methyl-5-oxopent-3-enoic acid methyl ester化学式
CAS
155688-25-8
化学式
C7H10O3
mdl
——
分子量
142.155
InChiKey
NSRVKVCITKQGFT-ZZXKWVIFSA-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):
    0.3
  • 重原子数:
    10
  • 可旋转键数:
    4
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.43
  • 拓扑面积:
    43.4
  • 氢给体数:
    0
  • 氢受体数:
    3

反应信息

  • 作为反应物:
    描述:
    (E)-4-methyl-5-oxopent-3-enoic acid methyl ester4-二甲氨基吡啶正丁基锂lithium hexamethyldisilazane 作用下, 以 四氢呋喃正己烷乙腈 为溶剂, 反应 1.5h, 生成 (2E,4E)-methyl 4-methyl-5-(((E)-3-(p-tolyl)acryloyl)oxy)penta-2,4-dienoate
    参考文献:
    名称:
    Enantioselective All-Carbon (4+2) Annulation by N-Heterocyclic Carbene Catalysis
    摘要:
    The enantioselective vinylogous Michael/aldol cascade is an underdeveloped approach to cyclohexenes. Herein we describe a highly enantioselective (most >= 98:2 er) and diastereoselective (all >= 15:1 dr) N-heterocyclic carbene catalyzed cycloisomerization of acyclic dienyl esters to cyclohexyl beta-lactones. Derivatizations avail cyclohexenes bearing four contiguous stereogenic centers, while mechanistic studies support olefin isomerization prior to cyclization.
    DOI:
    10.1021/ja508542n
  • 作为产物:
    描述:
    o-diphenylphosphanylbenzoic acid 1-methoxycarbonylmethylallyl ester一氧化碳 在 (acetylacetonato)dicarbonylrhodium (l) 、 potassium carbonate氢气 作用下, 以 四氢呋喃 为溶剂, 50.0 ℃ 、4.0 MPa 条件下, 反应 24.08h, 以78%的产率得到(E)-4-methyl-5-oxopent-3-enoic acid methyl ester
    参考文献:
    名称:
    串联定向区域选择性加氢甲酰化/β-消除:一种合成烯醛的实用方法
    摘要:
    报道了通过烯丙基 o-DPPB 酯的串联定向加氢甲酰化/β-消除工艺实际合成 α,β-不饱和醛。o-DPPB 基团作为加氢甲酰化对所需醛醇异构体的区域选择性的有效控制剂,随后被温和的标准碱原位消除。该反应对于制备 1,1-二取代和三取代烯醛是相当普遍的,并且与许多官能团相容。o-DPPBA 可以通过色谱法或以二乙基铵盐的形式沉淀来回收。
    DOI:
    10.1055/s-2008-1067140
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文献信息

  • Application of Chiral Cationic Catalysts to Several Classical Syntheses of Racemic Natural Products Transforms Them into Highly Enantioselective Pathways
    作者:Qi-Ying Hu、Gang Zhou、E. J. Corey
    DOI:10.1021/ja046154m
    日期:2004.10.1
    This paper describes the application of chiral oxazaborolidinium cations of type 2 to various enantioselective Diels-Alder reactions that have served as early key steps for the syntheses of complex natural products. In the original syntheses these Diels-Alder reactions produced racemic adducts and led to racemic target molecules unless a separation of enantiomers by classical resolution was employed. By use of chiral catalysts of type 2, chiral products were obtained directly from Diels-Alder reactions of achiral components in excellent yield and enantioselectivity and with the mechanistically predicted absolute configuration. As a result, a number of classical syntheses could be converted to enantioselective versions, including (1) cortisone/cortisol (Merck/Sarett), (2) dendrobine (Kende), (3) vitamin B-12 (Eschenmoser), (4) myrocin C (Chu-Moyer/Danishefsky), (5) coriolin and hirsutene (Mehta), (6) dendrobatid 251F (Aube), (7) silphinene (Ito), and (8) nicandrenone core (Stoltz/Corey).
  • KREBS, E. P.
    作者:KREBS, E. P.
    DOI:——
    日期:——
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