3-乙氧基-6-异丙基-2-环己烯-1-酮 | 99196-07-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 3-乙氧基-6-异丙基-2-环己烯-1-酮
• 英文名称: 3-Ethoxy-6-isopropyl-2-cyclohexen-1-one
• 英文别名: 3-ethoxy-6-isopropylcyclohex-2-enone；3-ethoxy-6-isopropylcyclohex-2-en-1-one；3-Ethoxy-6-(1-methylethyl)-2-cyclohexenone；3-Ethoxy-6-propan-2-ylcyclohex-2-en-1-one
• CAS: 99196-07-3
• 化学式: C₁₁H₁₈O₂
• 分子量: 182.263
• InChiKey: LASOUINACJYUTE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  3
• 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

反应信息

• 作为反应物：
  描述：

  3-乙氧基-6-异丙基-2-环己烯-1-酮 在 盐酸 作用下， 以 乙醚 、 正己烷 、 水 、 乙酸乙酯 为溶剂， 反应 0.5h， 生成 3-Methyl-4-isopropyl-2-cyclohexen-1-one
  参考文献：
  名称：

  New approaches to the synthesis of alkyl-substituted enol lactone systems, inhibitors of the serine protease elastase

  摘要：

  We have synthesized a series of alkyl-substituted enol lactones designed to act as mechanism-based inhibitors of human neutrophil elastase (HLE). General methods were developed for the preparation of alpha- and beta-alkyl-substituted 5-hexynoic acids by the bromoform reaction on the corresponding alkynoic methyl ketone, prepared by an Eschenmoser-Tanabe fragmentation sequence from a suitably substituted cyclohexenone. By this method, beta-methyl- and beta,beta-dimethyl-5-hexynoic acids were synthesized from commercially available isophorone and 3,5-dimethyl-2-cyclohexen-1-one, respectively. Alpha-Substituted 5-hexynoic acids were prepared from 3-ethoxy-2-cyclohexen-1-one, using a novel ZnCl2-mediated alkylation that we developed; this method gives high yields of alpha'-alkylation products, even with secondary halides. The most efficient method for the preparation of alpha-substituted 5-hexynoic acids involved a four-reaction sequence-alkylation of the alpha-substituted ester with 1,4-dibromobutane, elimination, bromination and bisdehydrobromination-that proceeded in high overall yield. Protio enol lactonizations were performed with mercury(II) catalysis in CH2Cl2 or CH2Cl2-H2O. Stereo-selective Z-bromo enol lactonization was carried out by Br+-induced lactonization in the presence of Ag+. E-Bromo enol lactonization with N-bromosuccinimide in CH2Cl2 in the presence of a small amount of water gave better yields and shorter reaction times than the traditional anhydrous conditions. In studies of the inhibitory activity of these lactones toward several proteases (reported in full elsewhere), we found that the alpha-alkyl-substituted protio and bromo enol lactones 1-3 were very good inhibitors of HLE, with k(a)/K(i) values ranging from 14 500 to 37 500 M-1 s-1; the beta-alkyl-substituted enol lactones 5-8 showed only moderate inhibition of HLE.

  DOI：

  10.1021/jo00059a049
• 作为产物：
  描述：

  1,3-环己二酮 在 正丁基锂 、 对甲苯磺酸 、 二异丙胺 作用下， 以 四氢呋喃 、 正己烷 、 甲苯 为溶剂， 反应 10.0h， 生成 3-乙氧基-6-异丙基-2-环己烯-1-酮
  参考文献：
  名称：

  钯催化的乙烯基酯的α-芳基化反应，用于合成γ，γ-二取代的环己烯酮

  摘要：

  据报道，钯催化的环状乙烯基酯的α-芳基化反应形成产物，该产物在一步中转化为γ-烷基-γ-芳基取代的环己烯酮。该Pd催化的反应在室温下进行，通常是高产率的，并且使用量低至0.25mol％的市售催化剂。芳基溴化物的范围特别宽，并且也可以使用烯基溴化物。包含α-芳基化和还原性转座的这一两步方案可以在一个罐中执行，并且适用于克级合成。

  DOI：

  10.1021/acs.orglett.6b03394

文献信息

• Pyrazolopyridine cycloalkanones and process for their preparation
  申请人：ICI Americas Inc.

  公开号：US04546104A1

  公开（公告）日：1985-10-08

  Novel tetrahydropyrazolo-[3,4-b]quinolinones, cyclopenta[b]pyrazolo-[4,3-e]pyridinones and cyclohepta[b]-pyrazolo[4,3-e]pyridinones, useful as anxiolytics having reduced side effects, are disclosed, including methods of preparation, pharmaceutical compositions containing them and intermediates used in their preparation.

  新型四氢吡唑并[3,4-b]喹啉酮、环戊[b]吡唑并[4,3-e]吡啶酮和环庚[b]-吡唑并[4,3-e]吡啶酮，作为具有减少副作用的抗焦虑药物被披露，包括其制备方法、含有它们的药物组合物和用于其制备的中间体。
• Pyrazolopyridine cycloalkanone derivatives
  申请人：ICI AMERICAS INC.

  公开号：EP0141608A2

  公开（公告）日：1985-05-15

  Novel tetrahydropyrazolo-[3,4-b]quinolinones, cyclo- benta[b]pyrazolo-[4,3-e]pyridinones and cyclohepta[b]-pyraz- olo-[4,3-e]pyridinones are disclosed useful as anxiolytics hav- ng reduced side effects are disclosed, including methods of preparation, pharmaceutical compositions containing them and intermediates used in their preparation.

  公开了新型四氢吡唑并-[3,4-b]喹啉酮类、环庚并[b]吡唑并-[4,3-e]吡啶酮类和环庚并[b]吡唑并-[4,3-e]吡啶酮类抗焦虑药物，包括制备方法、含有这些药物的药物组合物以及用于制备这些药物的中间体。
• Hydrolytic Enantioselective Protonation of Cyclic Dienyl Esters and a β-Diketone with Chiral Phase-Transfer Catalysts
  作者：Eiji Yamamoto、Daichi Gokuden、Ayano Nagai、Takashi Kamachi、Kazunari Yoshizawa、Akiyuki Hamasaki、Tamao Ishida、Makoto Tokunaga

  DOI：10.1021/ol3027363

  日期：2012.12.21

  Hydrolytic enantioselective protonation of dienyl esters and a beta-diketone catalyzed by phase-transfer catalysts are described. The latter reaction is the first example of an enantio-convergent retro-Claisen condensation. Corresponding various optically active alpha,beta-unsaturated ketones having tertiary chiral centers adjacent to carbonyl groups were obtained in good to excellent yields and enantiomeric ratios (83-99%, up to 97.5:2.5 er).
• US4546104A
  申请人：——

  公开号：US4546104A

  公开（公告）日：1985-10-08
• Palladium-Catalyzed α-Arylation of Vinylogous Esters for the Synthesis of γ,γ-Disubstituted Cyclohexenones
  作者：Thomas Johnson、Felix Pultar、Friedericke Menke、Mark Lautens

  DOI：10.1021/acs.orglett.6b03394

  日期：2016.12.16

  A palladium-catalyzed α-arylation of cyclic vinylogous esters to form products that are converted in one step to γ-alkyl-γ-aryl-substituted cyclohexenones is reported. This Pd-catalyzed reaction proceeds at room temperature, is generally high-yielding, and uses an amount of a commercially available catalyst as low as 0.25 mol %. The scope of aryl bromides is particularly broad, and alkenyl bromides

  据报道，钯催化的环状乙烯基酯的α-芳基化反应形成产物，该产物在一步中转化为γ-烷基-γ-芳基取代的环己烯酮。该Pd催化的反应在室温下进行，通常是高产率的，并且使用量低至0.25mol％的市售催化剂。芳基溴化物的范围特别宽，并且也可以使用烯基溴化物。包含α-芳基化和还原性转座的这一两步方案可以在一个罐中执行，并且适用于克级合成。