4-methyloctanal

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methyloctanal
• 化学式: C₉H₁₈O
• 分子量: 142.241
• InChiKey: GRRNPXSTCFOUCZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  10
• 可旋转键数：
  6
• 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：

  2-乙基己醇 、 一氧化碳 在 氢气 、 三苯基膦 作用下， 140.0~350.0 ℃ 、19.0 MPa 条件下， 反应 2.0h， 以10.8%的产率得到2-ethyl-4-methylhexanal
  参考文献：
  名称：

  Isononylamines from 2-Ethylhexanol, Processes for Their Preparation, and Their Use

  摘要：

  从2-乙基己醇开始制备异壬胺的过程，其特征在于(a) 在催化剂的存在下将2-乙基己醇脱水形成辛烯；(b) 在步骤a)中获得的辛烯与一周期表第VIII族过渡金属化合物存在下与一氧化碳和氢反应形成异壬醛；(c) 在步骤b)中获得的异壬醛转化为异壬胺。

  公开号：

  US20150152023A1

文献信息

• Method for Producing Isononanoic Acid Esters, Starting from 2-Ethyl Hexanol
  申请人：Oxea GmbH

  公开号：US20150158805A1

  公开（公告）日：2015-06-11

  A Process for preparing carboxylic esters of a mixture of structurally branched C9 monocarboxylic acids proceeding from 2-ethylhexanol is characterized in that (a) 2-ethylhexanol is dehydrated to an octene mixture in the presence of a catalyst; (b) the octene mixture obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give a mixture of isomeric isononanals; (c) the mixture of isomeric isononanals obtained in step b) is oxidized to a mixture of structurally branched C9 monocarboxylic acids; and (d) the mixture of structurally branched C9 monocarboxylic acids obtained in step c) is reacted with alcohols to give carboxylic esters.

  一种制备从2-乙基己醇出发的结构分支C9单羧酸酯混合物的方法，其特征在于 (a) 在催化剂存在下，将2-乙基己醇脱水成为辛烯混合物； (b) 在步骤a)中获得的辛烯混合物在元素周期表第VIII族的过渡金属化合物存在下与一氧化碳和氢反应，得到异辛醛的混合物； (c) 在步骤b)中获得的异辛醛混合物被氧化成结构分支的C9单羧酸的混合物；以及 (d) 在步骤c)中获得的结构分支C9单羧酸混合物与醇反应，得到羧酸酯。
• PROCESS FOR PREPARING POLYALCOHOLS FROM FORMALDEHYDE HAVING A LOW FORMIC ACID CONTENT
  申请人：Sirch Timan

  公开号：US20080167506A1

  公开（公告）日：2008-07-10

  The invention relates to a process for preparing polymethylol compounds of the formula (I) (HOCH 2 ) 2 —C—R 2 (I) where the radicals R are each, independently of one another, a further methylol group or an alkyl group having from 1 to 22 carbon atoms or an aryl or aralkyl group having from 6 to 22 carbon atoms, by condensation of aldehydes having from 2 to 24 carbon atoms with formaldehyde in an aldol reaction using tertiary amines as catalyst to form alkanals of the formula (II) where the radicals R each independently have one of the abovementioned meanings, and subsequent hydrogenation of the latter. The particular inventive feature of this process is that the aldol reaction is carried out using an aqueous formaldehyde solution having a formic acid content of <150 ppm and preferably <100 ppm. In this way of carrying out the process, the formation of by-products can advantageously be prevented in a targeted manner and the yield of the desired polymethylol compound can thereby be increased.

  该发明涉及一种制备多羟甲基化合物的方法，其化学式为(I)(HOCH2)2—C—R2(I)，其中基团R分别独立地为另一个甲醇基团或具有1至22个碳原子的烷基基团或具有6至22个碳原子的芳香基或芳基烷基基团，通过将具有2至24个碳原子的醛与甲醛在醛缩反应中使用三级胺作为催化剂进行缩合，形成化学式(II)的脂醛，其中基团R各自独立地具有上述含义之一，并随后对其进行氢化。该方法的特殊创新特点在于，在使用含有甲醛的水溶液进行醛缩反应时，其甲酸含量小于150 ppm，最好小于100 ppm。通过采用这种方法进行处理，可以有针对性地防止副产物的形成，并从而增加所需多羟甲基化合物的产率。
• Vinyl Esters of Isononanoic Acid Starting from 2-Ethyl Hexanol, Methods for the Production Thereof and Use Thereof
  申请人：Oxea Gmbh

  公开号：US20150166456A1

  公开（公告）日：2015-06-18

  Process for preparing the vinyl ester of isononanoic acid starting out from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated in the presence of a catalyst to form octene; (b) the octene obtained in step a) is converted into an isononanoic acid having one more carbon atom; and (c) the isononanoic acid obtained in step b) is converted into the corresponding vinyl ester.

  从2-乙基己醇开始制备异壬酸乙烯酯的过程，其特征在于(a)在催化剂的存在下，将2-乙基己醇脱水形成辛烯；(b)将步骤(a)中获得的辛烯转化为具有一个碳原子的异壬酸；(c)将步骤(b)中获得的异壬酸转化为相应的乙烯酯。
• Method for Producing Isononanoic Acids from 2-Ethyl Hexanol
  申请人：Oxea GmbH

  公开号：US20150191410A1

  公开（公告）日：2015-07-09

  Process for preparing isononanoic acid proceeding from 2-ethylhexanol, characterized in that (a) 2-ethylhexanol is dehydrated to octene in the presence of a catalyst; (b) the octene obtained in step a) is reacted in the presence of a transition metal compound of group VIII of the periodic table of the elements with carbon monoxide and hydrogen to give isononanal; and (c) the isononanal obtained in step b) is oxidized to isononanoic acid.

  从2-乙基己醇制备异壬酸的过程，其特征在于：（a）在催化剂的存在下，将2-乙基己醇脱水成辛烯；（b）在步骤（a）中获得的辛烯在元素周期表第VIII族的过渡金属化合物存在下与一氧化碳和氢反应，生成异壬醛；（c）在步骤（b）中获得的异壬醛被氧化成异壬酸。
• Piperidine derivatives
  申请人：SANKYO COMPANY LIMITED

  公开号：EP0583971A1

  公开（公告）日：1994-02-23

  Compounds of formula (I): wherein:    R represents H or a mono- or poly- carboxylic acyl group;    R¹ represents H or a carboxylic ester moiety;    R² represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or an aralkyl group, said groups being optionally substituted, or R² represents a carboxylic ester moiety;    n = 1 - 4;    Y is O or S;    and esters thereof,    are useful as heat and photo- stabilisers for polymeric materials.

  式(I)的化合物：其中：R代表H或单酰基或多酰基群；R¹代表H或羧酸酯基；R²代表烷基、烯基、炔基、芳基或芳基烷基，这些基团可选择性地被取代，或者R²代表羧酸酯基；n = 1 - 4；Y为O或S；及其酯，可用作聚合材料的热稳定剂和光稳定剂。