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2-溴-4,4-二甲基环戊-2-烯-1-酮 | 21428-66-0

中文名称
2-溴-4,4-二甲基环戊-2-烯-1-酮
中文别名
——
英文名称
2-bromo-4,4-dimethylcyclopent-2-en-1-one
英文别名
2-bromo-4,4-dimethylcyclopentenone;2-bromo-4,4-dimethyl-cyclopent-2-enone;2-Brom-4,4-dimethyl-cyclopent-2-enon;2-Brom-4,4-dimethyl-cyclopent-2-en-1-on;2-Brom-4,4-dimethyl-2-cyclopenten-1-on;2-Bromo-4,4-dimethyl-2-cyclopenten-1-one
2-溴-4,4-二甲基环戊-2-烯-1-酮化学式
CAS
21428-66-0
化学式
C7H9BrO
mdl
——
分子量
189.052
InChiKey
RHAJWAJOSORDIE-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

  • 熔点:
    68-69 °C
  • 沸点:
    107 °C(Press: 12 Torr)
  • 密度:
    1.462±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    2.3
  • 重原子数:
    9
  • 可旋转键数:
    0
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.57
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

SDS

SDS:bcf1c017c6a78f18af2996ebd15ea2b1
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上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

点击查看最新优质反应信息

文献信息

  • Chiral Aziridination of Olefins Using a Chiral Sulfinamide as the Nitrogen Source
    作者:Sundaresan Prabhakar、Ana Lobo、Vasco Bonifácio、Concepción González-Bello、Henry Rzepa
    DOI:10.1055/s-0029-1218545
    日期:2010.1
    Chiral aziridination of cyclic α-bromoenones is achieved by the use of the lithium salt of (S S )-(+)-p-toluenesulfinamide, which leads to products with diastereomeric excesses in the range of 30―65% using a simple protocol. A key factor associated with chiral induction is the incorporation of the reacting olefin in a cycle, indicating the importance of conformational restriction in the reacting double
    通过使用 (SS )-(+)-p-甲苯亚磺酰胺的锂盐实现环状 α-溴烯酮的手性氮丙啶化,使用简单的方案可得到非对映体过量在 30-65% 范围内的产品。与手性诱导相关的一个关键因素是反应烯烃在循环中的结合,这表明反应双键中构象限制的重要性。
  • Combined Computational and Experimental Studies of the Mechanism and Scope of the Retro-Nazarov Reaction
    作者:Michael Harmata、Peter R. Schreiner、Dong Reyoul Lee、Patrick L. Kirchhoefer
    DOI:10.1021/ja048942h
    日期:2004.9.1
    have a rate-accelerating effect on the retro-Nazarov reactions of these species. The retro-Nazarov reaction of these intermediates is predicted to exhibit significant torquoselectivity when carbon three is substituted with a methoxy and a methyl group. Experimental studies show that oxyallylic cations can undergo effective retro-Nazarov reactions when two alkyl and one aryl/vinyl groups are on carbons
    密度泛函理论计算 (B3LYP/6-31+G) 表明,环戊烯氧基烯丙基阳离子的碳三和四处的共轭和给电子取代基应该对这些物种的逆 Nazarov 反应具有加速作用。当碳三被甲氧基和甲基取代时,这些中间体的逆-纳扎罗夫反应预计将表现出显着的扭矩选择性。实验研究表明,当三个和四个碳原子上有两个烷基和一个芳基/乙烯基时,氧烯丙基阳离子可以进行有效的逆 Nazarov 反应。相同数量的烷基取代基或单个芳基取代基对促进反应无效。有趣的是,碳三上的单个烷氧基取代基足以发生逆向纳扎罗夫反应。
  • Studies Directed toward the Synthesis of the Unusual Antileukemic Diterpene Jatrophatrione. 1. A Solution to the Problem of Chirality Merger during Elaboration of the Entire Carbotricyclic Framework
    作者:Leo A. Paquette、Shogo Nakatani、Thomas M. Zydowsky、Scott D. Edmondson、Li-Qiang Sun、Renato Skerlj
    DOI:10.1021/jo9825254
    日期:1999.4.1
    tricyclic nucleus of jatrophatrione (1) is reported. The two key steps involve an oxyanionic Cope rearrangement and a Grob fragmentation. The building blocks required to reach 44 are the bicyclo[3.3.0]octanone 29 and the cyclopentadienyl bromide 35. The former was obtained in 12 steps from methylcyclopentadiene. The route to the latter began with 4,4-dimethylcyclopentenone. The charge-accelerated [3,3]-sigmatropic
    据报道,有一种实用的途径可用于构筑麻风树三酮(1)的[5.9.5]三环核。这两个关键步骤涉及氧阴离子应付对重排和Grob碎片。达到44所需的结构单元是双环[3.3.0]辛酮29和环戊二烯基溴化物35。前者是由甲基环戊二烯分12步获得的。通往后者的途径始于4,4-二甲基环戊烯酮。烯醇化甲基化后,在44内的电荷加速[3,3]-σ异构化通过椅子状过渡态进行,以传递在中型环中带有反式双键的高度紧张的产物,其结果是快速的环状通过烯途径闭环。将该烯醇醚酸水解并转化为甲磺酸羟基酯51,然后暴露于碱。
  • Sesquiterpene lactones
    作者:J.M. Dewanckele、F. Zutterman、M. Vandewalle
    DOI:10.1016/s0040-4020(01)91569-8
    日期:1983.1
    Two routes towards (±) quadrone (), via an intramolecular Diels-Alder reaction have been studied. The cycloaddition of failed, probably because of prohibitive strain. In the alternative approach, the key step afforded a mixture of the endo- and exo-adducts and . Both isomers were transformed into Danishefsky's intermediate , which has previously been converted to the title compound .
    已经研究了通过分子内Diels-Alder反应到达(±)四氢萘酮()的两条途径。环加成反应失败,可能是由于过高的应变。在替代方法中,关键步骤提供了内加合物和外加合物和的混合物。两种异构体均被转化为Danishefsky的中间体,该中间体先前已转化为标题化合物。
  • Enantioselective Double Michael Addition/Cyclization with an Oxygen-Centered Nucleophile as the First Step in a Concise Synthesis of Natural (+)-Asteriscanolide
    作者:Leo A. Paquette、Jinsung Tae、Mark P. Arrington、Aladin H. Sadoun
    DOI:10.1021/ja994053w
    日期:2000.3.1
    The total synthesis of (+)-asteriscanolide (1) starting from 2-bromo-4,4-dimethylcyclopentenone has been accomplished. The synthetic route features two key steps. The first step is an unprecedented Michael−Michael reaction sequence that involves a heteronucleophile and proceeds with complete asymmetric induction. The two five-membered rings of the target molecule are thereby generated enantioselectively
    已经完成了以 2-溴-4,4-二甲基环戊烯酮为原料的 (+)-asteriscanolide (1) 的全合成。合成路线有两个关键步骤。第一步是史无前例的迈克尔-迈克尔反应序列,它涉及亲核试剂并进行完全不对称诱导。从而在单个实验室步骤中以对映选择性生成目标分子的两个五元环。第二步是基于利用闭环复分解来提供八元环,其中存在共轭 1,3-二烯单元。合成策略的其他特征包括在区域控制的烯反应中利用单线态氧、二烯酮的完全立体控制的氢化和化学选择性的四氧化钌氧化。
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