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rac-4-ethyl-5-methylhexan-2-one | 40238-92-4

中文名称
——
中文别名
——
英文名称
rac-4-ethyl-5-methylhexan-2-one
英文别名
4-ethyl-5-methyl-hexane-2-one;4-ethyl-5-methyl-hexan-2-one;4-ethyl-5-methylhexan-2-one;4-Isopropylhexanone
rac-4-ethyl-5-methylhexan-2-one化学式
CAS
40238-92-4
化学式
C9H18O
mdl
——
分子量
142.241
InChiKey
JMCJUXDMFZSMLG-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:
    170.3±8.0 °C(Predicted)
  • 密度:
    0.812±0.06 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    2.5
  • 重原子数:
    10
  • 可旋转键数:
    4
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.89
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

反应信息

  • 作为产物:
    描述:
    (E)-5-甲基己-3-烯-2-酮三乙基铝 在 tetrakis(acetonitrile)copper(I)tetrafluoroborate 、 O-mono(N,N-dimethyl thiourea)substituted BINOL 作用下, 以 四氢呋喃 为溶剂, 反应 0.33h, 以36%的产率得到rac-4-ethyl-5-methylhexan-2-one
    参考文献:
    名称:
    使用硫代氨基甲酸酯配体将铜催化的有机金属试剂不对称共轭加成到线性烯酮中
    摘要:
    在手性硫代氨基​​甲酸酯配体的存在下[Cu(MeCN)4 ] BF 4形成活性催化剂,用于将MeMgBr,ZnEt 2和AlR 3(R = Me,Et)共轭加成到非3-en-2-one,庚-3-en-2-one和5-methylhex-3-en-2-one。这些难处理的底物的对映选择性高达51%。对于环己-2-烯酮,ee达到42%。
    DOI:
    10.1016/s0040-4039(98)02686-0
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文献信息

  • Aminohydroxyphosphine Ligand for the Copper-Catalyzed Enantioselective Conjugate Addition of Organozinc Reagents
    作者:Alakananda Hajra、Naohiko Yoshikai、Eiichi Nakamura
    DOI:10.1021/ol0618306
    日期:2006.8.1
    aminohydroxyphosphine ligand was developed for copper-catalyzed asymmetric conjugate addition of organozinc reagents to alpha,beta-unsaturated carbonyl compounds. This new tridentate ligand induces consistently high enantioselectivity in reactions of a variety of acyclic substrates. Theoretical mechanistic analysis suggests that the C-C bond formation takes place through a highly ordered transition state by the coordination
    开发了丙氨酸衍生的氨基羟基膦配体,用于铜催化的有机锌试剂向α,β-不饱和羰基化合物的不对称共轭加成。这种新的三齿配体在各种无环底物的反应中始终诱导出高对映选择性。理论机理分析表明,通过磷和氮原子分别与铜(III)和锌(II)原子以及氧阴离子与两种金属的配位,CC键的形成通过高度有序的过渡态发生中心。
  • Enantioselective Conjugate Addition of Dialkylzinc and Diphenylzinc to Enones Catalyzed by a Chiral Copper(I) Binaphthylthiophosphoramide or Binaphthylselenophosphoramide Ligand System
    作者:Min Shi、Chun-Jiang Wang、Wen Zhang
    DOI:10.1002/chem.200400254
    日期:2004.11.5
    The enantioselective conjugate addition of dialkylzinc or diphenylzinc to enones was catalyzed by a copper(I)-axially chiral binaphthylthiophosphoramide or binaphthylselenophosphoramide ligand system at room temperature (20 degrees C) or 0 degrees C, affording the Michael adducts in high yields with excellent ee for cyclic and acyclic enones. The enantioselectivity and reaction rate achieved here are
    二烷基锌或二苯基锌向烯酮的对映选择性共轭加成反应是在室温(20摄氏度)或0摄氏度下通过铜(I)-轴向手性二萘基硫代磷酰胺或二萘基硒代磷酰胺配体体系催化的,以高收率得到迈克尔加成物,具有优异的ee收率。环状和非环状烯酮。此处实现的对映选择性和反应速率是迄今为止将铜催化的共轭物添加至烯酮中的最佳结果之一。根据(31)P NMR和(13)C NMR光谱学研究表明,该系列手性磷酰胺是一种新型的S,N-二齿配体。还研究了这种不对称共轭加成系统的机理。我们发现这些手性配体中的磷酰胺的酸性质子在活性物种的形成中起着重要作用。在先前文献的基础上已经提出了双金属催化方法。产物ee和配体ee的线性效应进一步表明,活性物质是带有单个配体[Cu(I):配体1:1]的单体Cu(I)配合物。
  • Amino-sugar modular ligands—useful cores for the formation of asymmetric copper 1,4-addition catalysts
    作者:Antonella De Roma、Francesco Ruffo、Simon Woodward
    DOI:10.1039/b813137f
    日期:——
    Modular phosphine ligands, synthesised rapidly from commercial N-acetylglucosamine, are very effective in copper(I)-catalysed 1,4-additions of ZnR2 to linear aliphatic enones (87–95% ee).
    从商业化的N-乙酰氨基葡萄糖迅速合成的模块化磷配体,在铜(I)催化的ZnR2对线性烷基酮进行1,4-addition反应中非常有效(87–95% ee)。
  • CHIRAL TRIDENTATE COMPOUNDS, CORRESPONDING ORGANOMETAL COMPLEXES, METHOD FOR PREPARING SAME AND USE OF SAID COMPOUNDS AND COMPLEXES AS LIGANDS IN ASYMMETRICAL CATALYSIS
    申请人:Mauduit Marc
    公开号:US20100267956A1
    公开(公告)日:2010-10-21
    The invention relates to a compound of the formula (I) or the formula (II) in which: W is an oxygen atom or a radical of the formula NH; X is hydrogen or an alkaline cation or a C1-C8 alkyl or a —(CH 2 ) n 3 —C(R 4 )(R 5 )(R 6 ) radical; X and R on the one hand and X and R 1 on the other hand may independently form an optionally substituted cycle with 5, 6 or 7 links. The invention also relates to complexes of said compounds with at least one metal selected from the group comprising copper, palladium, ruthenium, iridium and rhodium, and to a method for the synthesis of these compounds. These compounds and complexes can be used in various asymmetrical catalysis methods.
    该发明涉及一种具有以下式(I)或式(II)的化合物,其中:W是氧原子或式NH的基团;X是氢或碱性阳离子或C1-C8烷基或—(CH2)n3—C(R4)(R5)(R6)基团;X和R在一侧以及X和R1在另一侧可以独立地形成具有5、6或7个连接的可选取代环。该发明还涉及所述化合物与包括铜、钯、钌、铱和铑在内的至少一种金属形成的络合物,以及一种合成这些化合物的方法。这些化合物和络合物可用于各种不对称催化方法中。
  • Enantioselective copper catalysed 1,4-conjugate addition reactions using chiral N-heterocyclic carbenes
    作者:Caroline L. Winn、Frédéric Guillen、Julien Pytkowicz、Sylvain Roland、Pierre Mangeney、Alexandre Alexakis
    DOI:10.1016/j.jorganchem.2005.07.024
    日期:2005.12
    The preparation of a variety of chiral N-heterocyclic carbene (NHC) precursors is described. The relative merits of imidazolinium salts and silver carbenes as NHC precursors are discussed with respect to their synthesis, stability and performance in the copper catalysed conjugate addition of dialkyl zinc reagents to a variety of Michael acceptors. Enantioselectivities of up to 93% were achieved using
    描述了多种手性N-杂环卡宾(NHC)前体的制备。讨论了咪唑啉鎓盐和羧甲基银作为NHC前体的相对优点,涉及它们在铜催化的将二烷基锌试剂共轭添加到多种Michael受体中时的合成,稳定性和性能。使用低至4%的手性配体即可实现高达93%的对映选择性。
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