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ethyl 2,4-diphenyl-2,3-butadienoate | 144542-50-7

中文名称
——
中文别名
——
英文名称
ethyl 2,4-diphenyl-2,3-butadienoate
英文别名
ethyl 2,4-diphenylbut-2,3-dienoate;Ethyl I+/--(2-phenylethenylidene)benzeneacetate
ethyl 2,4-diphenyl-2,3-butadienoate化学式
CAS
144542-50-7
化学式
C18H16O2
mdl
——
分子量
264.324
InChiKey
CULHQCCDLREPKA-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):
    3.8
  • 重原子数:
    20
  • 可旋转键数:
    5
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.11
  • 拓扑面积:
    26.3
  • 氢给体数:
    0
  • 氢受体数:
    2

反应信息

  • 作为产物:
    描述:
    ethyl 4-hydroxy-4-phenylbut-2-ynoate三氟甲磺酸 作用下, 反应 1.5h, 以25%的产率得到3,5-diphenyl-2,5-dihydrofuran-2-one
    参考文献:
    名称:
    在三氟甲磺酸或HUSY沸石的超亲电活化下,4-羟基丁-2-炔酸烷基酯与芳烃的反应:芳烃的交替炔丙基化或烯丙基化,以及呋喃-2-酮的合成
    摘要:
    烷基-4-芳基的反应(或4,4-二芳基)-4-羟基丁-2- ynoates [氩(H或Ar')(OH)C 4 -C 3 ≡C 2 -CO 2 ALK]与芳烃下三氟甲基磺酸TfOH或HUSY沸石的作用导致形成两种主要化合物:芳基取代的呋喃-2-酮或富电子芳烃的炔丙基化产物。在这些转换键的反应性中间体相应的起始butynoates中,Ar(H或Ar')(的O,O-双质子形式+ OH 2)C 4 -C 3 ≡C 2 - C(= O + H)(OAlk) ,其脱水会产生介晶的炔丙基-烯丙基阳离子Ar(H或Ar')(OH)4 C+ -C 3 ≡C 2 -C(= O + H)(OAlk)↔的Ar(H或Ar')(OH) 4 C = C 3  =  2 Ç + -C(= O + H)(OAlk),在碳C4和C2上分别具有两个亲电中心。这些物质与芳烃在C4的反应会导致芳烃的炔丙基化产物,或者,在C2的反应会
    DOI:
    10.1016/j.tet.2019.130517
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文献信息

  • Ester homologation revisited: a reliable, higher yielding and better understood procedure
    作者:Conrad J. Kowalski、Rajarathnam E. Reddy
    DOI:10.1021/jo00052a038
    日期:1992.12
    Enolate anions 3 and 6, prepared via enolization of a-bromo and dibromo ketones 4 and 5 were converted m high yield to ynolate anions 10 by respective addition of lithium tetramethylpiperidide (to effect deprotonation, 3 --> 7) or butyllithium (to effect metal-halogen exchange, 6 --> 7). Mixtures of such enolates were abo obtainable from esters 1 m a large-scale (25 mmol) via in situ formation and addition of lithiodibromomethane (from methylene bromide and lithium tetramethylpiperidide), followed by treatment of the resulting adducts with lithium hexamethyldisilazide to ensure complete enolization. Addition of sec-butyllithium and n-butyllithium to effect ynolate anion formation, followed by quenching of the reaction mixtures into acidic ethanol, reproducibly afforded homologated esters 8 in 67-90% yield. Demonstrated for ethyl esters 1 having the carbethoxy moiety attached to primary, secondary, tertiary, aryl, and alkenyl groups, this general procedure provides a convenient, large-scale alternative to the classical Arndt-Eistert sequence.
  • Reactions of alkyl 4-hydroxybut-2-ynoates with arenes under superelectrophilic activation with triflic acid or HUSY zeolite: Alternative propargylation or allenylation of arenes, and synthesis of furan-2-ones
    作者:Natalia A. Devleshova、Stanislav V. Lozovskiy、Aleksander V. Vasilyev
    DOI:10.1016/j.tet.2019.130517
    日期:2019.9
    respectively. Reactions of these species with arenes at C4 lead to products of arene propargylation, alternatively, reactions at C2 result in allenylation of arenes, followed by further transformation into furan-2-ones. Using quantum chemical calculations by the DFT method, it has been shown that the reactivity of such propargyl-allenyl cations is mainly explained by orbital factors. Plausible reaction mechanism
    烷基-4-芳基的反应(或4,4-二芳基)-4-羟基丁-2- ynoates [氩(H或Ar')(OH)C 4 -C 3 ≡C 2 -CO 2 ALK]与芳烃下三氟甲基磺酸TfOH或HUSY沸石的作用导致形成两种主要化合物:芳基取代的呋喃-2-酮或富电子芳烃的炔丙基化产物。在这些转换键的反应性中间体相应的起始butynoates中,Ar(H或Ar')(的O,O-双质子形式+ OH 2)C 4 -C 3 ≡C 2 - C(= O + H)(OAlk) ,其脱水会产生介晶的炔丙基-烯丙基阳离子Ar(H或Ar')(OH)4 C+ -C 3 ≡C 2 -C(= O + H)(OAlk)↔的Ar(H或Ar')(OH) 4 C = C 3  =  2 Ç + -C(= O + H)(OAlk),在碳C4和C2上分别具有两个亲电中心。这些物质与芳烃在C4的反应会导致芳烃的炔丙基化产物,或者,在C2的反应会
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