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2-(1-ethoxy-4-methylpenta-1,3-dienyl)-4,4,5,5-tetramethyl[1,3,2]dioxaborolane | 853356-40-8

中文名称
——
中文别名
——
英文名称
2-(1-ethoxy-4-methylpenta-1,3-dienyl)-4,4,5,5-tetramethyl[1,3,2]dioxaborolane
英文别名
2-[(1E)-1-ethoxy-4-methylpenta-1,3-dienyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
2-(1-ethoxy-4-methylpenta-1,3-dienyl)-4,4,5,5-tetramethyl[1,3,2]dioxaborolane化学式
CAS
853356-40-8
化学式
C14H25BO3
mdl
——
分子量
252.162
InChiKey
VEQQSZVKZHEOQL-ZRDIBKRKSA-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

物化性质

  • 沸点:
    280.7±42.0 °C(Predicted)
  • 密度:
    0.93±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    3.5
  • 重原子数:
    18
  • 可旋转键数:
    4
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.71
  • 拓扑面积:
    27.7
  • 氢给体数:
    0
  • 氢受体数:
    3

反应信息

  • 作为反应物:
    描述:
    2-(1-ethoxy-4-methylpenta-1,3-dienyl)-4,4,5,5-tetramethyl[1,3,2]dioxaborolane 在 bis-triphenylphosphine-palladium(II) chloride Amberlyst 15 、 potassium carbonate 作用下, 以 四氢呋喃二氯甲烷 为溶剂, 反应 9.0h, 生成 4,4-dimethyl-6-oxaspiro[4.6]undec-2-en-1-one
    参考文献:
    名称:
    通过Nazarov反应立体选择性合成螺环酮。
    摘要:
    [反应:参见文本]α-乙氧基二烯基硼酸酯与内酯衍生的乙烯基三氟甲磺酸酯之间的Suzuki-Miyaura交叉偶联反应提供了功能化的6-(1-乙氧基-1,3-丁二烯基)二氢吡喃衍生物,该衍生物在温和的条件下进行了Nazarov环化反应在酸性条件下得到官能化的螺环酮。该方法的产物分布和立体选择性强烈取决于α-乙氧基二烯和二氢吡喃部分的取代。在二氢吡喃部分上存在C 2-取代基时,观察到高的立体选择性。根据过渡态的几何形状解释了结果。
    DOI:
    10.1021/ol051464a
  • 作为产物:
    参考文献:
    名称:
    Remote Stereocontrol in the Nazarov Reaction:  A New Approach to the Core of Roseophilin
    摘要:
    Three different procedures are compared to obtain properly substituted divinyl ketones in which one of the double bonds is embedded in a five-membered heterocyclic structure and therefore suitable to produce cyclopenta-fused pyrrole derivatives by the acid-catalyzed Nazarov reaction. These, on treatment with TFA, afforded 2,4-cis-disubstituted 2,3,4,5-tetrahydro-1H-cyclopenta[b]pyrrol-6-ones with high stereocontrol. One of these Nazarov products was oxidized to the corresponding 4,5-dihydro-1H-cyclopenta[b]pyrrol-6-one derivative, thus obtaining an enantiopure key intermediate in the total synthesis of roseophilin.
    DOI:
    10.1021/jo0504058
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文献信息

  • Remote Stereocontrol in the Nazarov Reaction:  A New Approach to the Core of Roseophilin
    作者:Ernesto G. Occhiato、Cristina Prandi、Alessandro Ferrali、Antonio Guarna
    DOI:10.1021/jo0504058
    日期:2005.5.1
    Three different procedures are compared to obtain properly substituted divinyl ketones in which one of the double bonds is embedded in a five-membered heterocyclic structure and therefore suitable to produce cyclopenta-fused pyrrole derivatives by the acid-catalyzed Nazarov reaction. These, on treatment with TFA, afforded 2,4-cis-disubstituted 2,3,4,5-tetrahydro-1H-cyclopenta[b]pyrrol-6-ones with high stereocontrol. One of these Nazarov products was oxidized to the corresponding 4,5-dihydro-1H-cyclopenta[b]pyrrol-6-one derivative, thus obtaining an enantiopure key intermediate in the total synthesis of roseophilin.
  • Stereoselective Synthesis of Spirocyclic Ketones by Nazarov Reaction
    作者:Cristina Prandi、Annamaria Deagostino、Paolo Venturello、Ernesto G. Occhiato
    DOI:10.1021/ol051464a
    日期:2005.9.1
    [reaction: see text] The Suzuki-Miyaura cross-coupling reaction between alpha-ethoxydienyl boronates and lactone-derived vinyl triflates affords functionalized 6-(1-ethoxy-1,3-butadienyl)dihydropyran derivatives that undergo a Nazarov electrocyclic reaction under mild acidic conditions to give functionalized spirocyclic ketones. The product distribution and the stereoselectivity of the process are
    [反应:参见文本]α-乙氧基二烯基硼酸酯与内酯衍生的乙烯基三氟甲磺酸酯之间的Suzuki-Miyaura交叉偶联反应提供了功能化的6-(1-乙氧基-1,3-丁二烯基)二氢吡喃衍生物,该衍生物在温和的条件下进行了Nazarov环化反应在酸性条件下得到官能化的螺环酮。该方法的产物分布和立体选择性强烈取决于α-乙氧基二烯和二氢吡喃部分的取代。在二氢吡喃部分上存在C 2-取代基时,观察到高的立体选择性。根据过渡态的几何形状解释了结果。
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