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2-甲基-2-(2-硝基乙基)-1,3-环戊二酮 | 1020110-71-7

中文名称
2-甲基-2-(2-硝基乙基)-1,3-环戊二酮
中文别名
——
英文名称
2-methyl-2-(2-nitroethyl)-1,3-cyclopentanedione
英文别名
2-methyl-2-(2-nitroethyl)cyclopentane-1,3-dione
2-甲基-2-(2-硝基乙基)-1,3-环戊二酮化学式
CAS
1020110-71-7
化学式
C8H11NO4
mdl
——
分子量
185.18
InChiKey
ZKUOKRMFLGLSOB-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:
    355.8±22.0 °C(Predicted)
  • 密度:
    1.230±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    0.2
  • 重原子数:
    13
  • 可旋转键数:
    2
  • 环数:
    1.0
  • sp3杂化的碳原子比例:
    0.75
  • 拓扑面积:
    80
  • 氢给体数:
    0
  • 氢受体数:
    4

反应信息

  • 作为反应物:
    参考文献:
    名称:
    雌二醇甲醚的全合成及其与有机催化剂的五锅法合成
    摘要:
    基于“盆栽经济”的概念,开发了一种新的高效合成雌二醇甲醚的途径。关键反应是有机催化剂介导的不对称多米诺骨牌迈克尔/醛醇缩合反应,已应用于雌激素的5锅合成。发现减少罐数对增加合成的总产量是有效的。
    DOI:
    10.1002/ejoc.201800910
  • 作为产物:
    描述:
    硝基乙烯2-甲基-1,3-环戊二酮三丁基膦 作用下, 以 乙腈 为溶剂, 反应 20.0h, 以44%的产率得到2-甲基-2-(2-硝基乙基)-1,3-环戊二酮
    参考文献:
    名称:
    Comparative reductive desymmetrization of 2,2-disubstituted-cycloalkane-1,3-diones
    摘要:
    Reductive desymmetrization of 2-methyl-2-substituted-cycloalkane-1,3-diones can be effected using either NaBH(4) in DME or lithium tri-tert-butoxyaluminum hydride (LTBA) in THF at -60 degrees C. The former is a new approach that offers slightly greater diastereoselectivity in the reduction of 2,2-disubstituted-cyclopentane- 1,3-diones while LTBA is superior with 2,2-disubstituted-cyclohexane- 1,3-diones. Both conditions minimize subsequent reduction to diols thereby furnishing high yields of 1,3-ketols. Particularly rapid monoreductions are observed with 2-methyl-2-nitroethylcyclopentane-1,3-dione and 2-cyanoethyl-2-methylcyclopentane-1,3-dione when treated with NaBH(4) in DME at -60 degrees C. As expected, diastereoselectivity varies considerably with the substitution at C-2. (C) 2008 Elsevier Ltd. All rights reserved.
    DOI:
    10.1016/j.tet.2008.01.065
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文献信息

  • Pot Economy in the Total Synthesis of Estradiol Methyl Ether by Using an Organocatalyst
    作者:Yujiro Hayashi、Seitaro Koshino、Kanna Ojima、Eunsang Kwon
    DOI:10.1002/anie.201706046
    日期:2017.9.18
    Pot luck: Estradiol methyl ether was synthesized using only five reaction vessels and four purification steps. The key step involved a diphenylprolinol silyl ether mediated Michael reaction. The last one-pot sequence of the reaction involves six reactions, and highlights the pot-economical aspect of the synthesis. TMS=trimethylsilyl.
    运气:仅使用五个反应容器和四个纯化步骤即可合成雌二醇甲醚。关键步骤涉及二苯基脯醇甲硅烷基醚介导的迈克尔反应。反应的最后一锅法序列涉及六个反应,并突出了合成的锅法经济方面。TMS =三甲基甲硅烷基。
  • Enantioselective Synthesis of Tricyclic β-Lactones by NHC-Catalyzed Desymmetrization of Cyclic 1,3-Diketones
    作者:Sayan Shee、Subrata Mukherjee、Rajesh G. Gonnade、Akkattu T. Biju
    DOI:10.1021/acs.orglett.0c01756
    日期:2020.7.17
    The NHC-catalyzed desymmetrization of cyclic-1,3-diketones allowing the enantioselective construction of tricyclic β-lactones with five contiguous stereocenters, including two quaternary stereocenters, has been developed. The mild and operationally simple addition of α-bromoenals to cyclopentane-1,3-diketone derivatives proceeds via the initial formation of chiral α,β-unsaturated acylazolium intermediates
    已开发出NHC催化的1,3-二酮环的不对称化,可实现具有五个连续立体中心(包括两个四级立体中心)的三环β-内酯的对映选择性结构。向环戊烷-1,3-二酮衍生物中温和且简单地添加α-烯醛是通过手性α,β-不饱和酰基la中间体的初步形成而进行的,并最终在级联反应中达到顶峰,遵循迈克尔-醛醇内酯化途径β-内酯衍生物具有中等至良好的收率和优异的选择性。
  • Highly Enantioselective, Organocatalytic, and Scalable Synthesis of a Rare <i>cis,cis</i> ‐Tricyclic Diterpenoid
    作者:Daniel Townsend、Kenneth Shankland、Alex Weymouth‐Wilson、Zofia Komsta、Tim Evans、Alexander J. A. Cobb
    DOI:10.1002/chem.202000164
    日期:2020.3.18
    A highly enantioselective, organocatalytic, and scalable synthesis of a very unusual cis-decalin-cis-hydrindane tricyclic diterpenoid system has been achieved. Despite the prevalent pharmacological space that the related trans,trans and trans,cis-systems occupy, there have been no reports of an asymmetric synthesis of the cis,cis systems in the literature until now. We demonstrate the flexibility of
    已经实现了非常不寻常的顺-十氢化-顺式-三环二萜体系的高度对映选择性,有机催化和可扩展合成。尽管相关的反式,反式和反式,顺式系统占据着普遍的药理空间,但迄今为止,在文献中尚无关于顺式,顺式系统不对称合成的报道。我们不仅展示了我们的方法的灵活性,不仅可以访问多种产品,而且所有产品均以极高的选择性获得,而且还展示了其易于转化为相应的反式,顺式系统和其他衍生物的方法。
  • Triethylamine-Promoted Henry Reaction/Elimination of HNO<sub>2</sub>/Cyclization Sequence of Functionalized Nitroalkanes and 2-Oxoaldehydes: Diversity-Oriented Synthesis of Oxacycles
    作者:Yu-Xia Lu、Xue-Jiao Lv、Chang Liu、Yan-Kai Liu
    DOI:10.1021/acs.orglett.3c01158
    日期:2023.6.9
    The triethylamine-promoted cascade Henry reaction/elimination of HNO2/cyclization reaction of 2-oxoaldehydes with nitroalkanes bearing various remote functionalities is described. Both chiral and achiral nitroalkanes were applicable to this protocol, leading to a variety of oxacycles, such as chromenes, chromanes, cyclic hemiacetals, and polycyclic acetals. An unexpected regioselective photooxygenation
    描述了三乙胺促进的级联亨利反应/HNO 2的消除/2-氧代醛与带有各种远程官能团的硝基烷烃的环化反应。手性和非手性硝基烷烃均适用于该方案,从而产生各种氧杂环化合物,例如色烯、色烷、环状半缩醛和多环缩醛。在衍生化过程中,在没有敏化剂的情况下发生了意想不到的区域选择性光氧化,通过与单线态氧反应将衍生的二烯产物转化为二氧杂环丁烷,其在裂解后提供了 chromen-2-one 和苯甲醛
  • Asymmetric Flow Reactions Catalyzed by Immobilized Diphenylprolinol Alkyl Ether: Michael Reaction and Domino Reactions
    作者:Yujiro Hayashi、Shusuke Hattori、Seitaro Koshino
    DOI:10.1002/asia.202200314
    日期:2022.7.15
    Immobilized diphenylprolinol alkyl ether catalyst was found to be effective for the flow reactions. Three flow reactions were examined. Good overall yield (72%), excellent enantioselectivity (93% ee), and good turnover number (TON, 495) were obtained for a 61 h flow Michael reaction of nitromethane and cinnamaldehyde.
    发现固定的二苯基脯醇烷基醚催化剂对流动反应是有效的。检查了三个流动反应。对于硝基甲烷肉桂醛的 61 小时流动迈克尔反应,获得了良好的总产率 (72%)、出色的对映选择性 (93% ee ) 和良好的周转数 (TON, 495)。
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