7-methyl-3-oxo-oct-6-enoic acid ethyl ester | 5248-18-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: 7-methyl-3-oxo-oct-6-enoic acid ethyl ester
• 英文别名: ethyl 7-methyl-3-oxooct-6-enoate；6-Octenoic acid, 7-methyl-3-oxo-, ethyl ester
• CAS: 5248-18-0
• 化学式: C₁₁H₁₈O₃
• 分子量: 198.262
• InChiKey: YDLJTGXFDPPQJR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  14
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 海关编码：
  2918300090

反应信息

• 作为反应物：
  描述：

  7-methyl-3-oxo-oct-6-enoic acid ethyl ester 生成 6-甲基-5-庚烯-2-酮
  参考文献：
  名称：

  Julia,S.; Linstrumelle,G., Bulletin de la Societe Chimique de France, 1966, p. 3490 - 3498

  摘要：

  DOI：
• 作为产物：
  描述：

  3-甲基-2-丁烯酸乙酯 在 lithium aluminium tetrahydride 、 氢溴酸 、 sodium hydride 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 、 mineral oil 为溶剂， 反应 6.0h， 生成 7-methyl-3-oxo-oct-6-enoic acid ethyl ester
  参考文献：
  名称：

  香气化合物d 6 -β-紫罗兰酮和d 6 -β-环柠檬醛的可扩展合成，用作稳定同位素稀释测定中的内标

  摘要：

  C 13去甲肾上腺类固醇是葡萄酒中重要的香气化合物，即使含量很低也能为葡萄酒的总体香气赋予积极的属性。β-紫罗兰酮被认为是最重要的香气化合物之一，可为发现其中的葡萄酒，水果和蔬菜提供紫罗兰色，木质味和覆盆子香气。由于其低水平的强烈香气，需要精确的分析方法对其进行定量。稳定同位素稀释测定法（SIDA）是这些方法中最重要的方法之一，但需要使用同位素标记的标准品。在此，我们描述d 6 -β-紫罗兰酮和d 6的可扩展合成-β-cyclocitral，另一种带有烟熏和果味的香气化合物，起始于相对廉价的氘代起始原料d 6-丙酮。

  DOI：

  10.1016/j.tetlet.2020.152642

文献信息

• Novel allethrolone derivatives
  申请人：Roussel Uclaf

  公开号：US04304733A1

  公开（公告）日：1981-12-08

  Novel alcohols of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of carbamoyl and R.sub.1 ' and R.sub.2 ', R.sub.1 ' and R.sub.2 ' are individually selected from the group consisting of hydrogen, halogen, alkyl of 1 to 6 carbon atoms, aryl of 6 to 10 carbon atoms, arylalkyl of 7 to 13 carbon atoms, alkoxycarbonyl of 2 to 5 carbon atoms and --CN and R.sub.3 and R.sub.3 ' are individually selected from the group consisting of hydrogen, alkyl of 1 to 3 carbon atoms and alkenyl of 2 to 3 carbon atoms in the S form, R form or racemic mixtures thereof whose esters with cyclopropane carboxylic acids have an elevated insecticidal activity and their preparation.

  化学式为##STR1##的新型醇类化合物，其中R.sub.1和R.sub.2分别选自羰酰基和R.sub.1 '和R.sub.2 '，R.sub.1 '和R.sub.2 '分别选自氢、卤素、1至6个碳原子的烷基、6至10个碳原子的芳基、7至13个碳原子的芳基烷基、2至5个碳原子的烷氧羰基和--CN，R.sub.3和R.sub.3 '分别选自氢、1至3个碳原子的烷基和2至3个碳原子的烯基，以S形式、R形式或它们的消旋混合物，其与环丙烷羧酸酯具有较高杀虫活性，并提供其制备方法。
• Photoredox-catalyzed intramolecular cyclopropanation of alkenes with α-bromo-β-keto esters
  作者：Kohta Ide、Miyu Furuta、Hidetoshi Tokuyama

  DOI：10.1039/d1ob01733k

  日期：——

  A mild photoredox-catalyzed intramolecular cyclopropanation of alkenes with α-bromo-β-keto esters in an aqueous medium was developed. The sequential reaction process comprising the intramolecular radical addition of α-bromo-β-keto esters to olefins under photoredox catalysis, and subsequent cyclization to form cyclopropane proceeds in one-pot under exceptionally mild conditions at room temperature

  开发了一种温和的光氧化还原催化烯烃与 α-溴-β-酮酯在水性介质中的分子内环丙烷化反应。包括在光氧化还原催化下α-溴-β-酮酯与烯烃的分子内自由基加成，以及随后的环化形成环丙烷的连续反应过程在室温和 2,6- 存在下在异常温和的条件下以一锅法进行。二甲基吡啶。在反应条件下，由各种烯烃和对碱和酸敏感的官能化酯组成的范围广泛的底物是可行的，从而产生范围广泛的官能化双环环丙烷。
• MODULATORS FOR AMYLOID BETA
  申请人：Baumann Karlheinz

  公开号：US20090215759A1

  公开（公告）日：2009-08-27

  The invention relates to compounds of formula wherein the substituents are as described in claim 1 . Compounds of formula I are modulators for amyloid beta and thus, they may be useful for the treatment or prevention of a disease associated with the deposition of β-amyloid in the brain, in particular Alzheimer's disease, and other diseases such as cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome.

  该发明涉及以下式的化合物 其中取代基如权利要求中所述 。式I的化合物是淀粉样蛋白β的调节剂，因此它们可能对治疗或预防与大脑中β-淀粉样蛋白沉积相关的疾病有用，特别是阿尔茨海默病，以及其他疾病，如脑淀粉样血管病变，遗传性脑出血伴淀粉样变性，荷兰型（HCHWA-D），多梗死性痴呆，拳击性痴呆和唐氏综合征。
• Novel esters of 2-methyl-3-allyl-4-substituted-cyclopent-2-ene-1-yl
  申请人：Roussel Uclaf

  公开号：US04356187A1

  公开（公告）日：1982-10-26

  Novel esters of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of carbamoyl and R.sub.1 ' and R.sub.2 ', R.sub.1 ' and R.sub.2 ' are individually selected from the group consisting of hydrogen, halogen, alkyl of 1 to 6 carbon atoms, aryl of 6 to 10 carbon atoms, aralkyl of 7 to 13 carbon atoms, alkoxycarbonyl of 2 to 5 carbon atoms and --CN, R.sub.3 and R.sub.3 ' are individually selected from the group consisting of hydrogen, halogen, alkenyl of 2 to 3 carbon atoms and alkyl of 1 to 3 carbon atoms, Y' is selected from the group consisting of ##STR2## R.sub.4 ' and R.sub.5 ' are individually selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, fluorine, bromine, chlorine and R.sub.4 ' and R.sub.5 ' together with the carbon atom to which they are attached form an optionally unsaturated hydrocarbon ring or heterocycle of 3 to 7 chain members and a heterocycle of the formula X is selected from the group consisting of sulfur and oxygen or R.sub.4 ' is cyano and R.sub.5 ' is phenyl or R.sub.4 ' is hydrogen and R.sub.5 ' is selected from the group consisting of cyano, ##STR3## AlK is alkyl of 1 to 4 carbon atoms, the double bond in the 1- position of the vinyl side chain of formula (A) having (E) or (Z) configuration, R.sub.6 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and alkoxycarbonyl of 2 to 5 carbon atoms, the substituents on the cyclopropane ring of formula (A) and (C) have the cis or trans, racemic or optically active configuration, Z.sub.1 is alkyl of 1 to 4 carbon atoms, Z.sub.2, Z.sub.3 and Z.sub.4 are individually selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, alkylthio of 1 to 4 carbon atoms and halogen and the asymetric carbon of formula (D) may be (S) or (R) configuration or a racemic mixture thereof and the carbon atom in the 1- position of the alcohol moiety may have (R), (S) or racemic configuration having insecticidal properties and their preparations.

  公式为##STR1##的新酯类化合物，其中R.sub.1和R.sub.2分别选自羰酰基和R.sub.1'和R.sub.2'，R.sub.1'和R.sub.2'分别选自氢、卤素、1至6个碳原子的烷基、6至10个碳原子的芳基、7至13个碳原子的芳基烷基、2至5个碳原子的烷氧羰基和--CN的群，R.sub.3和R.sub.3'分别选自氢、卤素、2至3个碳原子的烯基和1至3个碳原子的烷基，Y'选自##STR2##的群，R.sub.4'和R.sub.5'分别选自氢、1至4个碳原子的烷基、氟、溴、氯和R.sub.4'和R.sub.5'与其连接的碳原子一起形成3至7个链成员的可选不饱和碳氢环或杂环，以及公式X的杂环选自硫和氧或R.sub.4'为氰基且R.sub.5'为苯基或R.sub.4'为氢且R.sub.5'选自氰基、##STR3##，AlK为1至4个碳原子的烷基，公式(A)的乙烯侧链的1-位置的双键具有(E)或(Z)构型，R.sub.6选自氢、1至4个碳原子的烷基和2至5个碳原子的烷氧羰基，公式(A)和(C)的环丙烷环上的取代基具有顺式或反式、消旋或光学活性构型，Z.sub.1为1至4个碳原子的烷基，Z.sub.2、Z.sub.3和Z.sub.4分别选自氢、1至4个碳原子的烷基、1至4个碳原子的烷氧基、1至4个碳原子的烷硫基和卤素，公式(D)的不对称碳原子可能为(S)或(R)构型或其消旋混合物，醇基的1-位置的碳原子可能具有(R)、(S)或消旋构型，具有杀虫性能的化合物及其制备方法。
• Enantioselective Mannich Reaction of β-Keto Esters with Aromatic and Aliphatic Imines Using a Cooperatively Assisted Bifunctional Catalyst
  作者：Antti J. Neuvonen、Petri M. Pihko

  DOI：10.1021/ol5025025

  日期：2014.10.3

  An efficient urea-enhanced thiourea catalyst enables the enantioselective Mannich reaction between β-keto esters and N-Boc-protected imines under mild conditions and minimal catalyst loading (1–3 mol %). Aliphatic and aromatic substituents are tolerated on both reaction partners, affording the products in good enantiomeric purity. The corresponding β-amino ketones can readily be accessed via decarboxylation

  有效的尿素增强的硫脲催化剂可在温和的条件下和最小的催化剂负载量（1-3摩尔％）下使β-酮酸酯与N -Boc保护的亚胺之间进行对映选择性曼尼希反应。在两个反应伙伴上都可以容忍脂肪族和芳香族取代基，从而提供具有良好对映体纯度的产物。相应的β-氨基酮可容易地通过脱羧作用而不会损失对映体纯度。