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trifluoromethanesulfonic acid 4-methyl-5,6-dihydro-4H-pyran-2-yl ester | 790661-89-1

中文名称
——
中文别名
——
英文名称
trifluoromethanesulfonic acid 4-methyl-5,6-dihydro-4H-pyran-2-yl ester
英文别名
5,6-dihydro-6-methyl-4H-pyran-2-yl trifluoromethanesulfonate;(4-methyl-3,4-dihydro-2H-pyran-6-yl) trifluoromethanesulfonate
trifluoromethanesulfonic acid 4-methyl-5,6-dihydro-4H-pyran-2-yl ester化学式
CAS
790661-89-1
化学式
C7H9F3O4S
mdl
——
分子量
246.207
InChiKey
MYCOBRWNIQKPRX-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

物化性质

  • 沸点:
    271.4±40.0 °C(Predicted)
  • 密度:
    1.46±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    2.4
  • 重原子数:
    15
  • 可旋转键数:
    2
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.71
  • 拓扑面积:
    61
  • 氢给体数:
    0
  • 氢受体数:
    7

反应信息

点击查看最新优质反应信息

文献信息

  • 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。
  • New Synthetic Approach to Cyclopenta-Fused Heterocycles Based upon a Mild Nazarov Reaction. 2. Further Studies on the Torquoselectivity
    作者:Cristina Prandi、Alessandro Ferrali、Antonio Guarna、Paolo Venturello、Ernesto G. Occhiato
    DOI:10.1021/jo0489263
    日期:2004.10.1
    Conjugated alkoxytrienes in which one of the double bonds is embedded in a heterocyclic moiety are obtained by the Pd-catalyzed coupling reaction of lactam- and lactone-derived vinyl triflates with alpha-alkoxydienylboronates. These compounds undergo a 4pi electrocyclization process (Nazarov reaction) under acidic conditions and afford cyclopenta-fused heterocycles in good yields. As a continuation of a previous study, the torquoselectivity of this Nazarov reaction has been investigated using 2-alkyl-substituted pyrrolidinone and 2- and 4-substituted delta-valerolactone derivatives. High or complete stereoselectivity has only been observed with the 2-alkyl-substituted heterocycles. Both steric and stereoelectronic effects could contribute to determining the stereoselection of the ring closure.
  • A Synthesis of 6-Tributylstannyl-3,4-dihydro-2H-pyrans via Coupling of Enol Triflates with (Bu3Sn)(Bu)CuLi·LiCN
    作者:Tanya Wildman、Philip J. Kocienski、Robert Narquizian、William G. Whittingham
    DOI:10.1055/s-2002-20041
    日期:——
    Enol triflates derived from 6- and 7-membered ring lactones (6 cases) react with (Bu 3 Sn)(Bu)CuLi.LiCN in THF at -78°C to give the corresponding α-tributylstannyl cyclic enol ethers in 54-85% yield.
    由 6 元和 7 元环内酯衍生的烯醇三氟甲磺酸酯(6 例)与 (Bu 3 Sn)(Bu)CuLi.LiCN 在 THF 中 -78°C 反应生成相应的 54-85 α-三丁基甲锡烷基环烯醇醚% 屈服。
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