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(R)-methyl propyl ketone cyanohydrin | 135362-74-2

中文名称
——
中文别名
——
英文名称
(R)-methyl propyl ketone cyanohydrin
英文别名
(2R)-2-hydroxy-2-methylpentanonitrile;(2r)-2-Hydroxy-2-methylpentanenitrile
(R)-methyl propyl ketone cyanohydrin化学式
CAS
135362-74-2
化学式
C6H11NO
mdl
——
分子量
113.159
InChiKey
DOTBWZRLSYDMSC-ZCFIWIBFSA-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):
    0.8
  • 重原子数:
    8
  • 可旋转键数:
    2
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.83
  • 拓扑面积:
    44
  • 氢给体数:
    1
  • 氢受体数:
    2

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

  • 作为反应物:
    描述:
    (R)-methyl propyl ketone cyanohydrin盐酸 作用下, 以 甲醇甲苯 为溶剂, 反应 17.0h, 生成 (R)-2-methyl-2-hydroxypentanoic acid methyl ester
    参考文献:
    名称:
    Screening for New Hydroxynitrilases from Plants
    摘要:
    我们建立了一种简单的高效液相色谱法来测定由苯甲醛和氰化物合成的手性扁桃腈的活性和立体化学性质,并将其用于筛选植物来源的羟腈裂解酶(HNL)活性。该方法共检测了 74 个科 163 种植物的 (R)- 和 (S)-HNL 活性。我们发现,百里香叶片的匀浆显示出(S)-HNL 活性,而西番莲的叶片和种子以及枇杷、柴胡、山梨、梅和柿的种子显示出(R)-HNL 活性。从西番莲和枇杷中部分纯化的(R)-HNLs 不仅对苯甲醛有作用,而且对脂肪族酮也有作用。利用西番莲叶片匀浆由 2-戊酮合成的(R)-甲基丙酮氰醇的对映体过量率为 87.0%,利用枇杷叶种子匀浆合成的(R)-扁桃腈的对映体过量率为 85.0%。
    DOI:
    10.1271/bbb.69.2349
  • 作为产物:
    参考文献:
    名称:
    A General Strategy to Enantiomerically Pure Aliphatic and Olefinic Ketone Cyanohydrins by Stereoselective Alkylation of Umpoled Aldehyde Derivatives
    摘要:
    We present the first general synthesis of optically pure (R)- and (S)-ketone cyanohydrins with olefinic and aliphatic substituents. Consecutive condensations of POCl3 with pseudoephedrine (1) and racemic crotonaldehyde cyanohydrin (3, R = 1-propenyl) lead to the respective cyanohydrin phosphate 4c. Deprotonation, followed by highly stereoselective alkylation and a single chromatographic purification step, afford diastereomerically pure ketone cyanohydrin phosphates 5a-e. From these, enantiomerically pure tertiary cyanohydrins 6a-e can be obtained by mild Lewis acid-assisted hydrolysis. Pseudoephedrine is simultaneously recovered without loss of optical purity. The unsaturated alkylation products 5a-d are readily hydrogenated with diimide to aliphatic cyanohydrin phosphates 5f-i, which can be cleaved to furnish the free optically pure cyanohydrins 6f-i. Thus a broad variety of both saturated and unsaturated ketone cyanohydrins with R > Et becomes accessible in optically pure form for the first time. The free cyanohydrins are easily converted to optically pure alpha-branched alpha-hydroxy acids.
    DOI:
    10.1021/jo970854a
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文献信息

  • A new (R)-hydroxynitrile lyase from Prunus mume: asymmetric synthesis of cyanohydrins
    作者:Samik Nanda、Yasuo Kato、Yasuhisa Asano
    DOI:10.1016/j.tet.2005.08.105
    日期:2005.11
    A new hydroxynitrile lyase (HNL) was isolated from the seed of Japanese apricot (Prunus mume). The enzyme has similar properties with HNL isolated from other Prunus species and is FAD containing enzyme. It accepts a large number of unnatural substrates (benzaldehyde and its variant) for the addition of HCN to produce the corresponding cyanohydrins in excellent optical and chemical yields. A new HPLC
    从日本杏(Prunus mume)的种子中分离出一种新的羟腈裂解酶(HNL )。该酶与从其他李属物种中分离的HNL具有相似的特性,并且是含FAD的酶。它接受大量非天然底物(苯甲醛及其变体)以添加HCN,从而以优异的光学和化学收率生产相应的氰醇。针对该酶开发了一种新的基于HPLC的对映选择性测定技术,该技术可促进在缓冲溶液(pH = 4.5)中将KCN添加到苯甲醛中。
  • Synthesis of Aliphatic and α-Halogenated Ketone Cyanohydrins with the Hydroxynitrile Lyase from <i>Manihot esculenta</i>
    作者:Johannes Diebler、Jan von Langermann、Annett Mell、Martin Hein、Peter Langer、Udo Kragl
    DOI:10.1002/cctc.201300965
    日期:2014.4
    The potential of the hydroxynitrile lyase from Manihot esculenta towards ketone substrates was investigated. It was observed that the length of the aliphatic chain is a key parameter for the conversion of aliphatic, non‐branched ketones. Smaller substrates are readily converted with high enantioselectivites, but the elongation of the chain length causes a significant loss in enzyme activity. For a
    研究了来自Manihot esculenta的羟腈裂解酶对酮底物的潜力。据观察,脂族链的长度是脂族非支链酮转化的关键参数。较小的底物容易被高对映体选择物转化,但是链长的延长导致酶活性的显着降低。对于许多卤代,在此尤其是氟化的苯乙酮衍生物,已经合成了具有良好至中等对映选择性的相应的氰醇。
  • (R)-Oxynitrilase catalyzed synthesis of (R)-ketone cyanohydrins
    作者:Franz Effenberger、Stephan Heid
    DOI:10.1016/0957-4166(95)00391-6
    日期:1995.12
    enantioselective addition of HCN to ethyl alkyl ketones 1 in diisopropyl ether yielding (R)-ethyl alkyl ketone cyanohydrins (R)-2, which are hydrolyzed under acid catalysis to give the α-hydroxy acids (R)-3. This (R)-oxynitrilase also catalyzes the enantioselective addition in aqueous citrate buffer (50 mM, pH 4.0), as demonstrated for the preparation of (R)-methyl alkyl ketone cyanohydrins (R)-5 which are obtained
    杏仁(Prunus amygdalus)的(R)-氧化硝化酶催化将HCN对映选择性加成到二异丙基醚中的乙基烷基酮1中,得到(R)-乙基烷基酮氰醇(R)-2 ,在酸催化下水解得到α -羟基酸(R)-3 。该(R)-氧硝腈酶还催化在柠檬酸缓冲液(50 mM,pH 4.0)中的对映选择性加成,如制备(R)-甲基烷基酮氰基醇(R)-5的制备所证明的那样,该对映体以高对映体过量获得以二异丙醚为溶剂的溶剂。
  • Enzyme catalysed formation of (S)-cyanohydrins derived from aldehydes and ketones in a biphasic solvent system
    作者:Herfried Griengl、Norbert Klempier、Peter Pöchlauer、Michael Schmidt、Nongyuan Shi、Antonina A Zabelinskaja-Mackova
    DOI:10.1016/s0040-4020(98)00901-6
    日期:1998.11
    By employing a vigorously stirred two phase system aqueous buffer/organic solvent and using the hydroxynitrile lyase from Hevea brasiliensis as biocatalyst enantiopure (S)-cyanohydrins from aliphatic, unsaturated, aromatic and heteroaromatic aldehydes and methyl alkyl and methyl phenyl ketones are obtained in high yield and in general 98–99% enantiomeric excess.
    通过使用剧烈搅拌的两相系统水性缓冲液/有机溶剂,并使用巴西橡胶树的羟基腈裂解酶作为生物催化剂,对映体纯(S)-氰醇从脂肪族,不饱和,芳香族和杂芳香族醛以及甲基烷基和甲基苯基酮中获得通常对映体过量98–99%。
  • Investigation of Lewis Acid versus Lewis Base Catalysis in Asymmetric Cyanohydrin Synthesis
    作者:Michael North、Marta Omedes-Pujol、Courtney Williamson
    DOI:10.1002/chem.201001078
    日期:——
    undertaken. When Lewis acid catalysis is dominant, a significantly positive reaction constant is observed, whereas reactions dominated by Lewis base catalysis give much smaller reaction constants. [Ti(salen)O}2] was found to show the highest degree of Lewis acid catalysis, whereas two [VO(salen)X] (X=EtOSO3 or NCS) complexes both displayed lower degrees of Lewis acid catalysis. In the case of reactions
    可以通过路易斯酸和/或路易斯碱催化三甲基甲硅烷基氰化物向醛的不对称加成,所述路易斯酸和/或路易斯碱分别活化所述醛和三甲基甲硅烷基氰化物。从催化剂的结构并不总是显而易见的是路易斯酸或路易斯碱催化是占主导地位。为了在使用钛,钒和铝的塞伦络合物作为催化剂的背景下进行研究,进行了不对称氰醇合成的哈米特分析。当路易斯酸催化起主导作用时,观察到明显的正反应常数,而路易斯碱催化占主导的反应给出的反应常数小得多。发现[Ti(salen)O} 2 ]显示出最高的路易斯酸催化程度,而两个[VO(salen)X](X = EtOSO 3或NCS)配合物均显示较低程度的路易斯酸催化作用。在[Al(salen)} 2 O]和三苯膦氧化物催化的反应情况下,观察到非线性哈米特图,这表明随着羰基化合物变得更多电子,机理随着路易斯碱催化作用的增加而改变。 -不足。这些结果表明,铝络合物/三苯基膦氧化物催化剂体系也应催化
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