(methyl-3 butyl-2)-2 cyclopentanone | 119772-95-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (methyl-3 butyl-2)-2 cyclopentanone
• 英文别名: 2-(3-Methylbutan-2-yl)cyclopentan-1-one
• CAS: 119772-95-1；119772-96-2
• 化学式: C₁₀H₁₈O
• 分子量: 154.252
• InChiKey: RIXYJGHKYVBWMJ-UHFFFAOYSA-N

物化性质

• 沸点：
  201.0±8.0 °C(Predicted)
• 密度：
  0.903±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 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)-2-(2-methylpropylidene)cyclopentan-1-one 、 三甲基铝 在 噻吩-2-甲酸亚铜(I) 、 (3,5-Dioxa-4-phospha-cyclohepta[2,1-a;3,4-a']dinaphthalen-4-yl)-bis-((R)-1-phenyl-ethyl)-amine 、 盐酸 、 rochelle salt 作用下， 以 乙醚 、 正庚烷 、 甲醇 为溶剂， 反应 2.0h， 生成 (methyl-3 butyl-2)-2 cyclopentanone
  参考文献：
  名称：

  铜催化不对称共轭加成到 α-亚烷基环烷酮

  摘要：

  据报道，不对称铜催化共轭加成到 α-亚烷基环烷酮，在其末端位置被芳香族和脂肪族基团取代。虽然使用手性亚磷酰胺配体和 R3Al 试剂可达到高对映选择性，但在烯醇铝水解时观察到中等非对映选择性。格氏试剂也以高非对映选择性反应。

  DOI：

  10.1055/s-0034-1380165

文献信息

• Auto-protonation diastereoselective d' enolates issus de l'addition-1,4 d'nethiolates avec des enones
  作者：Sald Berrada、Stéphane Desert、Patrick Metzner

  DOI：10.1016/s0040-4020(01)85987-1

  日期：1988.1

  steps : Michael addition gives an elusive enolate which undergoes a fast “auto-protonation” : transfer of the hydrogen alpha to the thiocarbonyl group towards the enolate moiety. Geometry of the enethiolate double bond is unique and probably cis. An intramolecular concerted auto-protonation mechanism is discussed and a pseudo-cyclic transition state is tentatively assigned. An example of a tandem Michael

  锂化的二硫代乙酸甲酯与α，β-二取代的烯酮的1，4-加成反应得到非对映异构的5-氧代二硫代链烷酸酯。通过化学相关将顺式构型分配给主要的非对映异构体。用2,2,4-三甲基-4-己烯-3 1和2-亚乙基环链烷酮可获得很高的非对映选择性，使该反应可用于选择性合成具有1,2-相邻不对称碳的无环或半环链。立体风化过程与通常观察到的非环状非对映体烯酸酯质子化的过程相反（Houk模型）。诱捕实验表明，水解之前存在的物质不是烯醇盐而是烯硫醇盐，已经具有同构立体化学。这些Enefhiolates来自以下步骤：迈克尔加成反应产生难以捉摸的烯醇化物，该烯醇化物经历快速的“自动质子化”：氢α到硫代羰基的朝着烯醇化物部分的转移。烯硫醇双键的几何结构是独特的，可能是顺式的。讨论了分子内协调的自动质子化机制，并暂时分配了伪循环过渡态。串联迈克尔加成/克莱森重排的一个实例是通过将加成中间体进行S-烯丙基化，然后在室温下将
• BERRADA, SAID;DESERT, STEPHANE;METZNER, PATRICK, TETRAHEDRON, 44,(1988) N 12, 3575-3586
  作者：BERRADA, SAID、DESERT, STEPHANE、METZNER, PATRICK

  DOI：——

  日期：——
• POROUS INORGANIC/ORGANIC HYBRID PARTICLES HAVING HIGH ORGANIC CONTENT AND ENHANCED PORE GEOMETRY FOR CHROMATOGRAPHIC SEPARATIONS
  申请人：Waters Technologies Corporation

  公开号：US20210237032A1

  公开（公告）日：2021-08-05

  Novel particles and materials for chromatographic separations, processes for preparation and separations devices containing the chromatographic particles and materials are provided by the instant invention. In particular, the invention provides a porous inorganic/organic hybrid particle, wherein the inorganic portion of the hybrid particle is present in an amount ranging from about 0 molar % to not more than about 49 molar %, wherein the pores of the particle are substantially disordered. The invention also provides a porous inorganic/organic hybrid particle, wherein the inorganic portion of the hybrid particle is present in an amount ranging from about 25 molar % to not more than about 50 molar %, wherein the pores of the particle are substantially disordered and wherein the particle has a chromatographically enhancing pore geometry (CEPG). Methods for producing the hybrid particles, separations devices comprising the hybrid particles and kits are also provided.
• [EN] ODORANT ALCOHOLS<br/>[FR] ALCOOLS ODORANTS
  申请人：FIRMENICH & CIE

  公开号：WO2011073843A1

  公开（公告）日：2011-06-23

  The present invention relates to the use as perfuming ingredient, to impart odor notes of the white flower type, of some derivatives of 2-isobutyl-cyclohexanol or cyclopentanol of formula (I) in the form of any one of its stereoisomers or a mixture thereof, and wherein the dotted line represents a carbon-carbon single or double bond; n is O or 1; and R1 represents a hydrogen atom or a methyl or ethyl group; R2 represents a hydrogen atom or a methyl or ethyl group; R3 represents a hydrogen atom or a linear C1-3 alkyl group; and each R4 represents a hydrogen atom or a methyl or ethyl group; provided that both R4 have in total, i.e. all together, 0, 1 or 2 carbon atoms.
• Copper-Catalyzed Asymmetric Conjugate Addition to α-Alkylidene Cycloalkanones
  作者：Alexandre Alexakis、Pierre Garcia、Nicolas Germain、Simon Woodward

  DOI：10.1055/s-0034-1380165

  日期：——

  The asymmetric copper-catalyzed conjugate addition to α-alkylidene cycloalkanones, substituted at their terminal position with aromatic and aliphatic groups, is reported. While high enantioselectivity is reached using chiral phosphoramidite ligands, with R3Al reagents, moderate diastereoselectivity was observed upon hydrolysis of the aluminium enolates. A Grignard reagent also react with high diastereo­selectivity

  据报道，不对称铜催化共轭加成到 α-亚烷基环烷酮，在其末端位置被芳香族和脂肪族基团取代。虽然使用手性亚磷酰胺配体和 R3Al 试剂可达到高对映选择性，但在烯醇铝水解时观察到中等非对映选择性。格氏试剂也以高非对映选择性反应。