4',4',6,6-tetramethyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,1'-cyclohexane]-2',4,6'-trione | 1984-51-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 4',4',6,6-tetramethyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,1'-cyclohexane]-2',4,6'-trione
• 英文别名: Spiro[benzofuran-2(4H),1'-cyclohexane]-2',4,6'-trione, 3,5,6,7-tetrahydro-4',4',6,6-tetramethyl-；5',5',6,6-tetramethylspiro[5,7-dihydro-3H-1-benzofuran-2,2'-cyclohexane]-1',3',4-trione
• CAS: 1984-51-6
• 化学式: C₁₇H₂₂O₄
• 分子量: 290.359
• InChiKey: GOFLAKVFQSCOEQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  21
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  60.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4',4',6,6-tetramethyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,1'-cyclohexane]-2',4,6'-trione 在 一水合肼 作用下， 以 异丙醇 为溶剂， 反应 3.0h， 以55%的产率得到
  参考文献：
  名称：

  Carbonyl-containing spiro-dihydrofurans in reactions with ammonium acetate and hydrazine hydrate

  摘要：

  DOI：

  10.1007/s10593-006-0024-3
• 作为产物：
  描述：

  3-hydroxy-2-[(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)methyl]-5,5-dimethylcyclohex-2-en-1-one 在 manganese(III) triacetate dihydrate 作用下， 以 溶剂黄146 为溶剂， 反应 0.03h， 以69%的产率得到4',4',6,6-tetramethyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,1'-cyclohexane]-2',4,6'-trione
  参考文献：
  名称：

  使用基于锰（III）的四羰基化合物氧化选择性合成螺和双螺化合物

  摘要：

  在各种条件下研究了作为四羰基化合物的亚甲基双（环己烷二酮）和亚甲基双（哌啶二酮）的Mn（III）基氧化，根据溶剂选择性生产螺二氢呋喃和二螺环丙烷。讨论了螺二氢呋喃和双螺环丙烷的形成机理。此外，一种新型生物碱3,4,6,7,8,10-六氢-1 H-吡喃并[3,2- c：5,6- c' ]二吡啶-1,9的简单合成证明了（2 H）-二酮。

  DOI：

  10.1016/j.tet.2020.131165

文献信息

• Selective formation of spiro dihydrofurans from one-pot reaction of dimedone with BrCN and aldehydes in the presence of Et3N
  作者：Nader Noroozi Pesyan、Alireza Shokr、Mohammad Behroozi、Ertan Şahin

  DOI：10.1007/s13738-012-0190-4

  日期：2013.6

  Reaction of 5,5-dimethylcyclohexane-1,3-dione (dimedone), aldehydes and cyanogen bromide in the presence of triethylamine leads to the selective formation of spiro dihydrofurans in moderate to good yields at room temperature.

  在三乙胺存在下，5,5-二甲基环己烷-1,3-二酮（二甲酮），醛和溴化氰的反应在室温下以中等至良好的产率选择性生成螺二氢呋喃。
• α‐Bromination of 1,3‐Dicarbonyl Compounds Using Dess–Martin Periodinane (DMP) and Tetraethylammonium Bromide (TEAB)
  作者：Paresh D. Salgaonkar、Vidyanand G. Shukla、Krishnacharya G. Akamanchi

  DOI：10.1080/00397910601033641

  日期：2007.2.1

  Abstract A mild and expeditious method for α‐bromination of 1,3‐dicarbonyl compounds using Dess–Martin periodinane and tetraethylammonium bromide is described.

  摘要 描述了一种使用戴斯-马丁高碘烷和四乙基溴化铵对 1,3-二羰基化合物进行 α-溴化的温和快速方法。
• Selective Formation of Spiro Dihydrofurans and Cyclopropanes Through Unexpected Reaction of Aldehydes with 1,3-Dicarbonyl Compounds
  作者：Guan-Wu Wang、Jie Gao

  DOI：10.1021/ol900451d

  日期：2009.6.4

  5-dimethylcyclohexane-1,3-dione and 1,3-indandione to selectively afford spiro dihydrofuran and cyclopropane derivatives, promoted by molecular iodine and dimethylaminopyridine under mechanical milling conditions, has been demonstrated. The products were obtained in good to excellent yields. A possible mechanism of this unusual reaction process is proposed.

  在机械研磨条件下，由分子碘和二甲基氨基吡啶促进的各种醛与5,5-二甲基环己烷-1,3-二酮和1,3-茚满二酮的氧化加成反应以选择性提供螺二氢呋喃和环丙烷衍生物的有效方法已具有被证明。获得的产物具有良好至优异的产率。提出了这种异常反应过程的可能机理。
• Reactions of Fused Carbonyl-containing Spirodihydrofurans with Hydrogen Sulfide and Acids
  作者：O. V. Fedotova、M. I. Skuratova、M. A. Panov、S. P. Mushtakova

  DOI：10.1007/s11178-006-0015-y

  日期：2005.11

  Reactions were studied of fused spirodihydrofurans originating from 1,3-cyclohexanedione with hydrogen sufide arising in situ. Depending on a substituent at the atom C 3 of the heterocycle the reaction ended by thionation of the conjugated carbonyl group followed by heterocyclization involving the spirodimedonyl fragment. A quantum-chemical forecasting of the protonation stages of substrates and their thionated analogs was performed applying the semiempirical PM3 procedure. A probable mechanism of investigated transformations of the spirodihydrofurans was suggested.

  研究了由 1,3-Cyclohexanedione 与原位产生的亚硫酸氢盐所产生的融合螺二氢呋喃的反应。根据杂环原子 C 3 上的取代基，反应以共轭羰基的硫代化结束，然后是螺二甲酰基片段的杂环化。采用半经验 PM3 程序对底物及其硫代类似物的质子化阶段进行了量子化学预测。提出了所研究的螺二氢呋喃转化的可能机制。
• Synthesis of dioxapropellanes using Mn(III)-based oxidative tandem cyclization of tetracarbonyl compounds with diarylethenes
  作者：Keisuke Shibuya、Ayaka Chikamatsu、Kazuki Hisano、Hiroshi Nishino

  DOI：10.1093/bulcsj/uoae011

  日期：2024.3.1

  The Mn(III)-based oxidation of tetracarbonyl compounds with 1,1-diarylethenes formed dioxapropellanes. The use of methylenebis(3-hydroxycyclohex-2-en-1-one)s as a tetracarbonyl compound led to the production of 3,4,5,6,7,9-hexahydro-8H-4a,9a-(epoxyethano)xanthene-1,8(2H)-diones in good yields. Although the reaction competed with self-cyclization to form 3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,1′-cyclohexane]-2′,4,6′-triones, it could be controlled by adding the co-solvent formic acid at room temperature. The reactions of alkyl- and aryl-substituted methylenebis(3-hydroxycyclohex-2-en-1-one)s resulted in the corresponding dioxapropellanes as a diastereomixture. The formation of diastereomers is explained by the steric hindrance of the intermediate carbocations during tandem cyclization. The reactions using 2-(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)butane-1,4-diones and 2,2′-methylenebis(3-hydroxycyclopent-2-en-1-one)s also produced the corresponding dioxapropellanes. The structure determination of the products and the reaction pathway for the formation of dioxapropellanes are discussed.

  摘要 基于锰（III）的四羰基化合物与 1,1-二叔丁烯的氧化反应生成了二氧丙环。使用亚甲基双（3-羟基环己-2-烯-1-酮）作为四羰基化合物，可以生产出 3,4,5,6,7,9-六氢-8H-4a,9a-(环氧乙烷)氧杂蒽-1,8(2H)-二酮，收率很高。虽然该反应与自环化反应竞争生成 3,5,6,7-四氢-4H-螺[苯并呋喃-2,1′-环己烷]-2′,4,6′-三酮，但在室温下加入辅助溶剂甲酸可以控制反应。烷基和芳基取代的亚甲基双（3-羟基环己-2-烯-1-酮）反应生成相应的非对映混合物二氧丙环。形成非对映异构体的原因是串联环化过程中中间碳位的立体阻碍。使用 2-(2-羟基-4,4-二甲基-6-氧代环己-1-烯-1-基)丁烷-1,4-二酮和 2,2′-亚甲基双(3-羟基环戊-2-烯-1-酮)的反应也产生了相应的二氧杂环丙烷。本文讨论了生成物的结构测定和二氧杂环戊烷的生成反应途径。

表征谱图