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3-(2-Bromo-1-ethoxyethoxy)prop-1-yne | 152930-91-1

中文名称
——
中文别名
——
英文名称
3-(2-Bromo-1-ethoxyethoxy)prop-1-yne
英文别名
——
3-(2-Bromo-1-ethoxyethoxy)prop-1-yne化学式
CAS
152930-91-1
化学式
C7H11BrO2
mdl
——
分子量
207.067
InChiKey
GGXQACSXBPJAJR-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:
    229.8±25.0 °C(predicted)
  • 密度:
    1.343±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    1.3
  • 重原子数:
    10
  • 可旋转键数:
    5
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.71
  • 拓扑面积:
    18.5
  • 氢给体数:
    0
  • 氢受体数:
    2

反应信息

  • 作为反应物:
    描述:
    3-(2-Bromo-1-ethoxyethoxy)prop-1-yne 在 chromium(II) acetate 、 乙二胺 作用下, 以 四氢呋喃 为溶剂, 反应 12.0h, 以81%的产率得到2-Ethoxy-4-methylene-tetrahydrofuran
    参考文献:
    名称:
    用活化的乙酸铬(II)将α-溴缩醛还原为2-烷氧基四氢呋喃的自由基自由基化的新方法
    摘要:
    描述了一种合成γ-丁内酯6的方法,其中关键步骤是将α-溴缩醛4自由基环化为2-烷氧基四氢呋喃5,这是由乙酸铬(II)活化引发的,产率为54-93%。为了激活过渡金属,已经开发了四种新方法。其中两个仅需要催化量的乙酸铬(II),因为它可以化学或电化学方式原位再生。环化的非对映选择性取决于4的取代模式,范围在30.4:1和1:54.8之间。
    DOI:
    10.1016/s0040-4020(01)81285-0
  • 作为产物:
    描述:
    2-丙炔-1-醇乙烯基乙醚N-溴代丁二酰亚胺(NBS) 作用下, 以 二氯甲烷 为溶剂, 反应 6.0h, 以65%的产率得到3-(2-Bromo-1-ethoxyethoxy)prop-1-yne
    参考文献:
    名称:
    用活化的乙酸铬(II)将α-溴缩醛还原为2-烷氧基四氢呋喃的自由基自由基化的新方法
    摘要:
    描述了一种合成γ-丁内酯6的方法,其中关键步骤是将α-溴缩醛4自由基环化为2-烷氧基四氢呋喃5,这是由乙酸铬(II)活化引发的,产率为54-93%。为了激活过渡金属,已经开发了四种新方法。其中两个仅需要催化量的乙酸铬(II),因为它可以化学或电化学方式原位再生。环化的非对映选择性取决于4的取代模式,范围在30.4:1和1:54.8之间。
    DOI:
    10.1016/s0040-4020(01)81285-0
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文献信息

  • Generation and Mesolysis of PhSeSiR<sub>3</sub>]<sup>•-</sup>:  Mechanistic Studies by Laser Flash Photolysis and Application for Bimolecular Group Transfer Radical Reactions
    作者:Ganesh Pandey、K. S. Sesha Poleswara Rao、D. K. Palit、J. P. Mittal
    DOI:10.1021/jo972345e
    日期:1998.6.1
    The investigation presented in this paper explores the mechanistic aspects and synthetic potentials of PET promoted reductive activation of selenosilane la to its radical anion la(-.). PET activation of la is achieved through a photosystem comprising a light-absorbing electron-rich aromatic (ERA), such as DMN or DMA, as an electron donor and ascorbic acid as a co-oxidant. The evidence for the ET from excited singlet states of DMN as well as DMA to la is suggested by estimating negative Delta G(et) (-51 and -43.46 kcal mol(-1), respectively) values and nearly diffusion-controlled fluorescence quenching rate constants (k(q)TR) 0.36 x 10(10) M-1 s(-1) and 0.28 x 10(10) M-1 s(-1), respectively, from time-resolved fluorescence quenching study. The transient absorption spectra of DMN.+, DMA(.+), and la(.-) are obtained initially by pulse radiolysis in order to correlate the time-resolved absorption spectral data. Laser flash photolysis studies in the nanosecond time domain have confirmed the generation of la(.-), DMN.+, and DMA(.+), supporting the participation of the triplet state of DMN or DMA in the ET reaction. Mesolytic cleavage of 1a(.-) produced a silyl radical and a phenyl selenide anion. The preparative PET activation of la in acetonitrile in the presence of DMN or DMA leads to the formation of 5 and 6, confirming the fragmentation pattern of la(.-). The overall ET rate constants (K-r(DMN) = 0.99 x 10(10) M-1 s(-1) and k(r)(DMA) = 1.62 x 10(10) M-1 s(-1)) and limiting quantum yields (phi(lim)DMN) = 0.034 and phi(lim)(DMA) = 0.12) are estimated from the inverse plot (1/[la] vs 1/phi(dis)) Obtained by measuring the dependence of photodissociation quantum yields of la at its maximum concentration in the presence of DMN or DMA. Silicon-centered radical species generated from the mesolysis of la(.-) are utilized for initiating a radical reaction by the abstraction of halogen atom from -C-X (X = Cl, Br) bonds, while PhSe- terminates the radical sequences via PhSeSePh. This concept is successfully applied for the bimolecular group transfer (BMGT) radical reactions and intermolecular radical chain addition reactions.
  • Vinylphosphonate Formation via a Novel Cyclization−Vinyl Radical Trapping Sequence
    作者:Xian-Yun Jiao、Wesley G. Bentrude
    DOI:10.1021/ja984460s
    日期:1999.6.1
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