2-methyl-1-nonanal | 24424-67-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-methyl-1-nonanal
• 英文别名: 2-methylnonanal
• CAS: 24424-67-7
• 化学式: C₁₀H₂₀O
• 分子量: 156.268
• InChiKey: MNXNDLQGVDOJQY-UHFFFAOYSA-N

物化性质

• 熔点：
  -6°C (estimate)
• 沸点：
  210.54°C (estimate)
• 密度：
  0.8373 (estimate)

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  11
• 可旋转键数：
  7
• 环数：
  0.0
• 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

• 作为反应物：
  描述：

  2-methyl-1-nonanal 在 哌啶 、 盐酸 作用下， 生成 2-hydroxy-2-methyl-decanoic acid ethyl ester
  参考文献：
  名称：

  5,5-Dialkyl-2,4-oxazolidinediones^1,2

  摘要：

  DOI：

  10.1021/ja01854a019
• 作为产物：
  描述：

  2-壬酮 在 sodium ethanolate 作用下， 生成 2-methyl-1-nonanal
  参考文献：
  名称：

  Darzens, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1904, vol. 139, p. 1216

  摘要：

  DOI：

文献信息

• Phosphine-directed stereo- & regioselective Ni-catalyzed reactions of Grignard reagents with allylic ethers
  作者：Mary T. Didiuk、James P. Morken、Amir H. Hoveyda

  DOI：10.1016/s0040-4020(97)10212-5

  日期：1998.2

  Studies on the directed regio- and stereoselective Ni-catalyzed allylic substitution reactions involving methyl- and phenylmagnesium bromides and various acyclic and cyclic allylic ethers are reported. In the presence of a properly positioned internal Lewis base, CC bonds can be formed catalytically and with excellent levels of selectivity. Internal chelation allows Ni-catalyzed CC bond forming reactions

  报道了对直接的区域选择性和立体选择性镍催化的烯丙基取代反应的研究，该反应涉及甲基和苯基溴化镁以及各种无环和环状烯丙基醚。在适当定位的内部路易斯碱的存在下，可以催化形成C canC键，并具有极好的选择性。内部螯合使Ni催化的CC键形成反应易于进行，以高收率，在环境温度和高度区域和立体控制下完成，否则这些反应是非选择性的，缓慢的或根本不发生的。定向烯烃的异构化突出了金属催化烷基化策略的一个特别吸引人的特征：因为初始产物包含一个保留在内部路易斯碱可及范围内的酯基生成位点，
• [EN] ESTERS AND ETHERS OF 2,2,4,4-TETRAMETHYLCYCLOBUTANE-1,3-DIOL FOR USE AS AROMA CHEMICALS<br/>[FR] ESTERS ET ÉTHERS DE 2,2,4,4-TÉTRAMÉTHYLCYCLOBUTANE -1,3-DIOL DESTINÉS À ÊTRE UTILISÉS EN TANT QUE PRODUITS CHIMIQUES AROMATIQUES
  申请人：BASF SE

  公开号：WO2019048544A1

  公开（公告）日：2019-03-14

  The present invention relates to the use of a compound of the general formula (I) wherein R1 is C1-C4-alkyl or -(C=0)-R3, R2 is hydrogen, C1-C4-alkyl or -(C=0)-R4, and R3 and R4, independently of one another, are selected from the group consisting of hydrogen and C1-C4-alkyl, a stereoisomer thereof or a mixture of stereoisomers thereof, as an aroma chemical, to aroma chemical compositions comprising at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, and to a method for preparing a fragranced ready-to-use composition, which comprises incorporating at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, into a ready- to-use composition. The present invention further relates to specific ethers and specific esters of the compounds of the general formula (I) and a method for their preparation.

  本发明涉及使用一般式(I)的化合物，其中R1是C1-C4-烷基或-(C=0)-R3，R2是氢、C1-C4-烷基或-(C=0)-R4，R3和R4彼此独立地选自氢和C1-C4-烷基的群，其立体异构体或其立体异构体混合物，作为香料化学品，以及包含至少一种一般式(I)的化合物、其立体异构体或其立体异构体混合物的香料化学品组合物，以及制备香味即用组合物的方法，该方法包括将至少一种一般式(I)的化合物、其立体异构体或其立体异构体混合物纳入即用组合物中。本发明还涉及一般式(I)化合物的特定醚和特定酯以及它们的制备方法。
• An expedient synthesis of 5-<i>n</i>-alkylresorcinols and novel 5-<i>n</i>-alkylresorcinol haptens
  作者：Kirsti Parikka、Kristiina Wähälä

  DOI：10.3762/bjoc.5.22

  日期：——

  The first synthesis of bioactive long alkyl chain 5-n-alkylresorcinols, present in whole grain products, by a novel modification of the Wittig reaction is described. All the main long chain 5-n-alkylresorcinols present in rye and wheat, including C₂₃ and C₂₅ analogues and haptens, which have not been previously prepared, were synthesised. Microwave-promoted reactions of a semi-stabilized ylid and alkanals in water gave good yields in both pressurized and open systems. An alternative microwave-promoted synthesis starting from non-stabilized alkyltriphenylphosphonium salts and 3,5-dimethoxybenzaldehyde worked as well. Aqueous media were suitable for the reactions even if the starting materials were not soluble in water. The 5-n-alkylresorcinols are potential biomarkers of whole grain intake, and the new hapten derivatives of 5-n-alkylresorcinols will open the way for the immunochemical detection techniques of alkylresorcinols.

  描述了通过一种新颖的Wittig反应改进合成生物活性长烷基链5-烷基间苯二酚，这种物质存在于全谷物产品中。合成了黑麦和小麦中所有主要的长链5-烷基间苯二酚，包括C23和C25类似物以及以前未制备的半抗原。在水中，半稳定叶立德和烷醛的微波促进反应在加压和开放系统中均获得良好产率。另一种微波促进合成方法是从非稳定的烷基三苯基膦盐和3,5-二甲氧基苯甲醛出发。即使起始材料在水中不溶解，水介质也适用于这些反应。5-烷基间苯二酚是全谷物摄入的潜在生物标志物，而新的5-烷基间苯二酚半抗原衍生物将为烷基间苯二酚的免疫化学检测技术打开道路。
• DERIVATIVES OF 1-(4-METHYLCYCLOHEXYL)-ETHANOLS
  申请人：Symrise AG

  公开号：US20170002294A1

  公开（公告）日：2017-01-05

  The invention relates to mixtures having: components (a) having at least one fragrance of the formula (I) where R1=OC-R2, CH 2 OR3, C1-C8 open-chain or branched aliphatic radical, optionally substituted and/or unsaturated, with R2=an open-chain or branched aliphatic radical, optionally substituted and/or unsaturated, having 2-10 C atoms, with R3=an open-chain or branched aliphatic radical, optionally substituted and/or unsaturated, having 1-8 C atoms, and components (b) having at least one fragrance, different from the fragrances of component a, characterized in that the weight ratio of all components (a) to all components (b) is from 1:10 to 1:10000.

  该发明涉及具有以下特征的混合物：组分(a)至少具有一个符合以下式(I)的香料，其中R1=OC-R2，CH2OR3，C1-C8开链或支链脂肪基，可选择地取代和/或不饱和，其中R2=一个开链或支链脂肪基，可选择地取代和/或不饱和，含有2-10个碳原子，其中R3=一个开链或支链脂肪基，可选择地取代和/或不饱和，含有1-8个碳原子，以及组分(b)至少具有一个与组分a的香料不同的香料，其特征在于所有组分(a)与所有组分(b)的重量比为1:10至1:10000。
• Selective Homologation of Ketones and Aldehydes with Diazoalkanes Promoted by Organoaluminum Reagents
  作者：Keiji Maruoka、Amel B. Concepcion、Hisashi Yamamoto

  DOI：10.1055/s-1994-25682

  日期：——

  Organoaluminum-promoted single homologation or ring expansion of ketones and aldehydes with diazoalkanes has been described, and among various organoaluminum reagents, exceptionally bulky methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD) is found to be highly effective for the selective homologation of various ketones and aldehydes.

  介绍了一种利用重氮烷烃进行的酮和醛的一级同系化或环扩张反应，并发现，在多种有机铝试剂中，特别庞大的甲基铝双(2,6-二叔丁基-4-甲基苯氧化物)(MAD)对各种酮和醛的选择性同系化具有高度效果。