2,3,4,5,6,7-hexahydro-1-methyl-3aH-inden-2-one | 24730-98-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,5,6,7-hexahydro-1-methyl-3aH-inden-2-one
• 英文别名: 3-methyl-1,4,5,6,7,7a-hexahydro-2H-inden-2-one；3-methyl-Δ³-hydrinden-2-one；3-methyl-1,4,5,6,7,7a-hexahydroinden-2-one；9-methyl-bicycle[4,3,0]non-1(9)-en-8-one；1-methyl-3,3a,4,5,6,7-hexahydro-inden-2-one；1-Methyl-3,3a,4,5,6,7-hexahydro-inden-2-on；3-Methyl-1,4,5,6,7,7a-hexahydro-inden-2-one
• CAS: 24730-98-1
• 化学式: C₁₀H₁₄O
• 分子量: 150.221
• InChiKey: IYKLVLTVEHPBPR-UHFFFAOYSA-N

物化性质

• 沸点：
  119-121 °C(Press: 9 Torr)
• 密度：
  1.02±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.7
• 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-cyclohex-1-enyl-propionic acid 在 盐酸 、 氯化亚砜 、 三氟化硼乙醚 作用下， 以 乙醚 为溶剂， 反应 5.5h， 生成 2,3,4,5,6,7-hexahydro-1-methyl-3aH-inden-2-one
  参考文献：
  名称：

  Lewis acid promoted decomposition of unsaturated .alpha.-diazo ketones. 1. An efficient approach to simple and annulated cyclopentenones

  摘要：

  DOI：

  10.1021/ja00398a021

文献信息

• Tuning the Reactivity of Functionalized Diallylic Alcohols: Brønsted versus Lewis Acid Catalysis
  作者：Luisa Lempenauer、Elisabet Duñach、Gilles Lemière

  DOI：10.1002/chem.201702601

  日期：2017.8

  diallylic alcohols in acidic medium is disclosed, highlighting the difference between strong Lewis acid and mild Brønsted acid catalysis. In the presence of bismuth(III) triflate, allylic alcohol activation affords diversely substituted cyclopentenones in a Nazarov-type electrocyclization, whereas activation of the thioenol ether by p-toluenesulfonic acid provides an entry to α-sulfenylated β,γ-unsaturated

  公开了在酸性介质中双官能的含烯醇硫醚的二烯丙基醇的化学发散反应性，突出了强路易斯酸和温和布朗斯台德酸催化之间的区别。在三氟甲磺酸铋（III）的存在下，烯丙醇的活化在Nazarov型电环化中提供了不同取代的环戊烯酮，而对甲苯磺酸对硫烯醇醚的活化则为α-亚磺酰基化的β，γ-不饱和酮提供了入口。两种方法都表示使用便宜且无毒的催化系统，可以在温和条件下轻松获得相应的产品。
• Ring Expansion, Ring Contraction, and Annulation Reactions of Allylic Phosphonates under Oxidative Cleavage Conditions
  作者：Dupre Orr、Nikolas Yousefi、Thomas G. Minehan

  DOI：10.1021/acs.orglett.8b00791

  日期：2018.5.18

  followed by treatment with base affords 2-cyclopenten-1-ones 7 in good overall yields. This method may offer a practical alternative to existing methods for effecting one-carbon ring expansion, ring contraction, and annulation reactions.

  环烯基烷基膦酸酯1的氧化裂解，然后用碱处理，可以得到高产率或高产率的同系环烯酮2。使环烷-2-烯基膦酸酯3在相同条件下以优异的产率提供与一碳环缩合的化合物4。γ，δ-不饱和酮膦酸酯6的氧化裂解，然后用碱处理，可得到具有良好总收率的2-环戊烯-1-酮7。该方法可以为实现单碳环膨胀，环收缩和环化反应的现有方法提供一种实用的替代方法。
• Palladium(II)- and mercury(II)-catalyzed rearrangements of propargyl acetates
  作者：Patrick A. Caruana、Alison J. Frontier

  DOI：10.1016/j.tet.2007.08.008

  日期：2007.10

  The scope and utility of the metal-catalyzed rearrangement of propargyl acetates first reported by Rautenstrauch were expanded. Treatment of a series of appropriate acetate substrates with Pd(II)- and Hg(II)-catalysts afforded synthetically useful fused 5,6-bicyclic-1,4-cyclopentadienyl acetates and 2-cyclopentenones. It was found that the substituents at the terminal alkynyl and alkenyl positions

  Rautenstrauch首次报道了金属催化的炔丙基乙酸酯的金属催化重排的范围和实用性。用Pd（II）-和Hg（II）-催化剂处理一系列适当的乙酸酯底物，得到合成上有用的稠合的5,6-双环-1,4-环戊二烯基乙酸酯和2-环戊烯酮。发现乙酸酯底物的末端炔基和烯基位置处的取代基对反应的结果具有显着影响。
• Alicyclic compounds—IV
  作者：P.C. Mukharji、P.K. Sen Gupta、G.S. Sambamurti

  DOI：10.1016/0040-4020(69)80050-5

  日期：——

  The tricyclic cyclopropyl ketones (VIA, B) could not be isomerized by base to the cycloalkadienone. The monocyclic tosylates (XXIX and XXII) did not react in the manner of their decalone and octalone analogues (I and XX).

  三环环丙基酮（VIA，B）不能被碱异构化成环链二烯酮。单环甲苯磺酸盐（XXIX和XXII）没有以其十氢萘酸和八氢萘类似物（I和XX）的方式反应。
• Cyclopentenone Annulation of 1,4-Diketones with Potassium Phosphate Tribasic: A Synthesis of a Monoterpene Alkaloid, (.+-.)-Tecomanine.
  作者：Masaaki MIYASHITA、Daisuke TANAKA、Tomonori SHIRATANI、Hiroshi IRIE

  DOI：10.1248/cpb.40.1614

  日期：——

  Conjugate addition of cyclohexanone lithium enolate to 2-nitro-2-butene and the Nef reaction on the resulting nitronate gave 2-(2-oxopropyl)cyclohexanone in good yield. Treatment of the 2-(2-oxopropyl)cyclohexanone thus obtained with potassium phosphate tribasic (K3PO4) in isopropanol gave 2, 3, 4, 5, 6, 7-hexahydro-3-methyl-3aH-inden-2-one (8). Application of the procedure to 1, 3-dimethyl-4-piperidone (11) gave the 1, 3, 4, 6, 7, 7a-hexahydro-6-oxo-2, 4, 7-trimethyl-2H-2-pyrindine (12). Epimerization of 12 with basic alumina gave (±)-tecomanine (1). The short synthesis of the alkaloid demonstrates the usefulness of K3PO4 as a base for cyclopentenone annulation of 1, 4-diketones without migration of the double bond.

  将环己酮锂烯酸盐与 2-硝基-2-丁烯进行共轭加成，并对生成的硝酸酯进行奈夫反应，得到 2-(2-氧代丙基)环己酮，收率很高。用异丙醇中的磷酸二氢钾（K3PO4）处理这样得到的 2-(2-氧代丙基)环己酮，得到 2，3，4，5，6，7-六氢-3-甲基-3aH-茚-2-酮（8）。将该步骤应用于 1，3-二甲基-4-哌啶酮（11），可得到 1，3，4，6，7，7a-六氢-6-氧代-2，4，7-三甲基-2H-2-吡啶（12）。用碱性氧化铝对 12 进行二聚化可得到 (±)-tecomanine (1)。这种生物碱的简短合成证明了 K3PO4 作为 1，4-二酮的环戊烯酮环化碱的有用性，而且不会发生双键迁移。