2,3-二甲基-4-正戊基丁烯内酯 | 10547-84-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢呋喃
• 中文名称: 2,3-二甲基-4-正戊基丁烯内酯
• 中文别名: 二氢博伏内酯3,4-二甲基-5-戊基呋喃-2-(5H)-酮
• 英文名称: 3,4-dimethyl-5-pentyl-5H-furan-2-one
• 英文别名: 3,4-Dimethyl-5-pentylfuran-2(5H)-one；3,4-dimethyl-2-pentyl-2H-furan-5-one
• CAS: 10547-84-9
• 化学式: C₁₁H₁₈O₂
• 分子量: 182.263
• InChiKey: LRKURLXWGJNWOJ-UHFFFAOYSA-N

物化性质

• 稳定性/保质期：
  1. 存在于烤烟烟叶、白肋烟烟叶、香料烟烟叶、烟气中。 2. 天然存在于香蛇鞭菊、茶、胡椒、薄荷、大米、苜蓿、菊苣、广藿香油中。

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

制备方法与用途

制备方法

• 烟草: BU,56; BU,14; 26; OR,57; FC,9。

合成制备方法

• 烟草：BU，56；BU，14；26；OR，57；FC，9。

用途简介

暂无相关信息。

反应信息

• 作为产物：
  描述：

  3,4-二甲基-5-亚甲基-2(5H)-呋喃酮 、 lithium butylcuprate*LiI 在 氯化铵 作用下， 以 乙醚 、 水 为溶剂， 反应 1.5h， 以41%的产率得到2,3-二甲基-4-正戊基丁烯内酯
  参考文献：
  名称：

  区域选择性的1,6-共轭加有机物试剂到γ-亚烷基丁烯内酯

  摘要：

  这项工作描述δ取代和δ-非取代的行为的研究外γ-alkylidenebutenolides与dialkylcuprates的-环双键。发现加成反应是区域选择性的，以提供高达87％收率的1，6-缀合物加合物。

  DOI：

  10.1016/j.tetlet.2019.151472

文献信息

• Pyrrole compound, method of making same, and aroma composition, food, drink and cosmetics containing same
  申请人：T. HASEGAWA CO., LTD.

  公开号：US11332694B2

  公开（公告）日：2022-05-17

  A compound represented by the following formula (1): wherein, R1 is a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyl group; and R2 is a 1-pyrrolyl group, a 2-pyrrolyl group, or a 3-pyrrolyl group. The present invention can provide a means highly effective in contributing to savory roasting flavor and capable of imparting fragrance with natural feeling.

  下式(1)所代表的化合物： 其中，R1 是具有 1 至 3 个碳原子的直链或支链烷基或羟基；R2 是 1-吡咯基、2-吡咯基或 3-吡咯基。本发明可以提供一种方法，它能高效地促进咸味烘焙风味，并能赋予香味自然的感觉。
• Acylpalladation of Internal Alkynes and Palladium-Catalyzed Carbonylation of (Z)-.beta.-Iodoenones and Related Derivatives Producing .gamma.-Lactones and .gamma.-Lactams
  作者：Christophe Coperet、Takumichi Sugihara、Guangzhong Wu、Izumi Shimoyama、Ei-ichi Negishi

  DOI：10.1021/ja00117a011

  日期：1995.3

  The reaction of either an internal alkyne-organic halide mixture or (Z)-beta-iodoenones with CO in the presence of a Pd-phosphine catalyst, e.g., Cl2Pd(PPh(3))2, can give one of the three discrete types of compounds as the major products depending on the substrate structure and the reaction conditions. Those substrates which are convertible to (Z)-gamma-oxo-alpha,beta-unsaturated acylpalladium derivatives lacking delta-H atoms are converted to the corresponding 2-butenolides (13) in the presence of water, which serves as a H donor. Carbon monoxide most likely is the source of two electrons. Either in the absence of water (or any other suitable H source) or in the presence of some factors disfavoring the butenolide formation, the same reaction gives the corresponding dimeric product (16). Even in cases where there is an alpha-H atom in the alpha-substitutent, 1,4-elimination products (11), reported to be the major products in a related Pd-catalyzed reaction of terminal alkyne-aryl iodide mixtures with CO, were not detected. In sharp contrast, those substrates which can give rise to (Z)-gamma-oxo-alpha, beta-unsaturated acylpalladium derivatives containing delta-H atoms give, under comparable reaction conditions, enol lactones (12), i.e., (Z)-3-alkylidene-2-butenolides, contaminated with only very minor amounts of 22 even in cases where an excess (4 equiv) of water was present. The required (Z)-beta-iodoenones can be readily prepared in one pot via ZrCp(2)-promoted cyclization of alkynes with nitriles. The ready availability of the starting compounds and the high Z stereoselectivity make the overall sequence an attractive synthetic route to 12. The courses of the Pd-catalyzed carbonylation reactions of (Z)-beta-iodo-alpha,beta-unsaturated imines 23 closely parallel the reactions of enones and produce the corresponding lactams, i.e., 24 and 25.
• JP2003013088A
  申请人：——

  公开号：JP2003013088A

  公开（公告）日：2003-01-15
• JP2003013087A
  申请人：——

  公开号：JP2003013087A

  公开（公告）日：2003-01-15
• Compositions for golf equipment
  申请人：——

  公开号：US20040220375A1

  公开（公告）日：2004-11-04

  Golf balls comprising thermoplastic, thermoset, castable, or millable elastomer compositions are presently disclosed. These elastomer compositions comprise reaction products of polyisocyanates and telechelic polymers having isocyanate-reactive end-groups such as hydroxyl groups and/or amine groups. These elastomer compositions can be used in any one or more portions of the golf balls, such as inner center, core, inner core layer, intermediate core layer, outer core layer, intermediate layer, cover, inner cover layer, intermediate cover layer, and/or outer cover layer.