甲基环己二烯 | 1489-56-1

• 分子结构分类: 有机化合物 - 碳氢化合物 - 不饱和烃
• 中文名称: 甲基环己二烯
• 中文别名: 1-甲基-1,3-环己二烯
• 英文名称: 1-methyl-1,3-cyclohexadiene
• 英文别名: 1-methylcyclohexa-1,3-diene
• CAS: 1489-56-1；30640-46-1
• 化学式: C₇H₁₀
• 分子量: 94.1564
• InChiKey: QMFJIJFIHIDENY-UHFFFAOYSA-N

物化性质

• 沸点：
  98.05°C
• 密度：
  0.8000 (estimate)
• LogP：
  3.009 (est)
• 物理描述：
  Colourless oily liquid; Light fruity aroma
• 溶解度：
  Insoluble in water; soluble in most fixed oils
• 折光率：
  1.446-1.452
• 保留指数：
  771;791;771

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

安全信息

• 海关编码：
  2902199090

反应信息

• 作为反应物：
  描述：

  甲基环己二烯 在 sodium hydroxide 、 双氧水 、 三乙胺 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.0h， 生成 (1S,2R)-4-methyl-2-prop-2-enylcyclohex-3-en-1-ol
  参考文献：
  名称：

  Carbometalations of Simple Alkenes with Allyldibromoborane

  摘要：

  [GRAPHICS]The allylboration of alkenes with allyldibromoborane is described. Utilizing an improved methodology for the synthesis of allyldibromoborane, 1,3-dienes, styrene, and even isolated alkenes could be carbometalated in high yield regio- and stereospecifically at 0 degrees C. This high reactivity of allyldibromoborane significantly expands the scope of carbometalations of alkenes.

  DOI：

  10.1021/ol990673q
• 作为产物：
  描述：

  (1R,5R)-5-methylbicyclo[3.2.0]hept-3-en-2-one 以 二氯甲烷 为溶剂， 生成 甲基环己二烯
  参考文献：
  名称：

  Photochemistry of bicyclo[3.2.0]hept-3-en-2-ones

  摘要：

  DOI：

  10.1021/ja00794a034
• 作为试剂：
  描述：

  methyl (3S*,4R*)-1-benzyl-4-(2,4-difluorophenyl)pyrrolidine-3-carboxylate 、 二碳酸二叔丁酯 在 甲基环己二烯 、 Pearlman's catalist 作用下， 以 乙醇 为溶剂， 生成 1-tert-butyl 3-methyl (3S,4R)-4-(2,4-difluorophenyl)pyrrolidine-1,3-dicarboxylate
  参考文献：
  名称：

  Discovery of a Selective Small-Molecule Melanocortin-4 Receptor Agonist with Efficacy in a Pilot Study of Sexual Dysfunction in Humans

  摘要：

  The relevance of the melanocortin system to sexual activity is well established, and nonselective peptide agonists of the melanocortin receptors have shown evidence of efficacy in human sexual dysfunction. The role of the MC4 receptor subtype has received particular scrutiny, but the sufficiency of its selective activation in potentiating sexual response has remained uncertain owing to conflicting data from studies in preclinical species. We describe here the discovery of a novel series of small-molecule MC4 receptor agonists derived from library hit 2. The addition of methyl substituents at C3 and C5 of the 4-phenylpiperidin-4-ol ring was found to be markedly potency-enhancing, enabling the combination of low nanomolar potencies with full rule-of-five compliance. In general, the series shows only micromolar activity at other melanocortin receptors. Our preferred compound 40a provided significant systemic exposure in humans on both sublingual and oral administration and was safe and well tolerated up to the maximum tested dose. In a pilot clinical study of male erectile dysfunction, the highest dose of 40a tested (200 mg) provided a similar level of efficacy to sildenafil.

  DOI：

  10.1021/jm9017866

文献信息

• Catalytic (3+2) Palladium‐Aminoallyl Cycloaddition with Conjugated Dienes
  作者：Barry M. Trost、Zhongxing Huang

  DOI：10.1002/anie.201900693

  日期：2019.5.6

  application of tailored aminoallyl precursors for catalytic (3+2) cycloaddition with conjugated dienes via a Pd‐aminoallyl intermediate. The new cycloaddition reactions override the conventional (4+3) selectivity of aminoallyl cation cycloaddition through a sequence of Pd‐allyl transfer and ring closure. A variety of highly substituted or fused pyrrolidine rings were synthesized using the cycloaddition, and can

  我们描述了通过Pd-氨基烯丙基中间体与共轭二烯催化（3 + 2）环加成反应的量身定制的氨基烯丙基前体的设计和应用。通过一系列Pd-烯丙基转移和闭环反应，新的环加成反应超越了常规的（4 + 3）氨基烯丙基阳离子环加成反应。使用环加成反应可合成出各种高度取代或稠合的吡咯烷环，并可以用不同的钯催化剂进一步将[1,3] N-C重排为五元碳环。由双环吡咯烷产物制备各种衍生物也证明了（3 + 2）环加成的效用。
• Asymmetric 1,4-Dihydroxylation of 1,3-Dienes by Catalytic Enantioselective Diboration
  作者：Heather E. Burks、Laura T. Kliman、James P. Morken

  DOI：10.1021/ja809610h

  日期：2009.7.8

  studies reported in this communication suggest that both cyclic and acyclic substrates will participate in this reaction; however, dienes which are unable to adopt the S-cis conformation are unreactive. For most substrates, 1,4-addition is the predominant pathway. In addition to oxidation to the derived 2-buten-1,4-diol, stereoselective carbonyl allylation with the intermediate bis(boronate) ester is

  1,3-二烯的不对称 1,4-二羟基化和其他转化是由 Pt 催化的对映选择性添加双 (频哪醇) 二硼 (B(2)(pin)(2)) 到共轭二烯引发的。本通讯中报道的研究表明，环状和非环状底物都将参与该反应；然而，不能采用 S-顺式构象的二烯是不反应的。对于大多数底物，1,4-加成是主要途径。除了氧化为衍生的 2-丁烯-1,4-二醇之外，还描述了与中间体双（硼酸酯）酯的立体选择性羰基烯丙基化。
• Chiral Supramolecular U-Shaped Catalysts Induce the Multiselective Diels–Alder Reaction of Propargyl Aldehyde
  作者：Manabu Hatano、Tatsuhiro Sakamoto、Tomokazu Mizuno、Yuta Goto、Kazuaki Ishihara

  DOI：10.1021/jacs.8b09974

  日期：2018.11.28

  The Diels-Alder reaction, which is a traditional [4 + 2] cycloaddition with two carbon-carbon bond formations, is one of the most powerful tools to synthesize versatile and unique six-membered rings. We show that chiral supramolecular U-shaped boron Lewis acid catalysts promote the unprecedented multiselective Diels-Alder reaction of propargyl aldehyde with cyclic dienes. Independent from the substrate

  Diels-Alder 反应是一种传统的 [4 + 2] 环加成反应，具有两个碳-碳键形成，是合成通用且独特的六元环的最强大工具之一。我们表明手性超分子 U 形硼路易斯酸催化剂促进了炔丙醛与环二烯前所未有的多选择性 Diels-Alder 反应。独立于底物控制，对映-、内/外-、π-面-、区域-、位点和底物选择性可以通过本 U 形催化剂进行控制。所得反应产物可用于手性二烯配体和(+)-沙霉素关键中间体的简明合成。这里介绍的结果可能部分有助于开发用于多选择性反应的人工酶样超分子催化剂，
• (Guanidine)copper Complex-Catalyzed Enantioselective Dynamic Kinetic Allylic Alkynylation under Biphasic Condition
  作者：Xi-Yang Cui、Yicen Ge、Siu Min Tan、Huan Jiang、Davin Tan、Yunpeng Lu、Richmond Lee、Choon-Hong Tan

  DOI：10.1021/jacs.7b12806

  日期：2018.7.11

  Highly enantioselective allylic alkynylation of racemic bromides under biphasic condition is furnished in this report. This approach employs functionalized terminal alkynes as pro-nucleophiles and provides 6- and 7-membered cyclic 1,4-enynes with high yields and excellent enantioselectivities (up to 96% ee) under mild conditions. Enantioretentive derivatizations highlight the synthetic utility of this

  本报告提供了双相条件下外消旋溴化物的高度对映选择性烯丙基炔基化。这种方法使用功能化的末端炔作为亲核试剂，并在温和的条件下以高产率和出色的对映选择性（高达 96% ee）提供 6 元和 7 元环状 1,4-烯炔。对映保持衍生化突出了这种转化的综合效用。冷喷雾电离质谱 (CSI-MS) 和 X 射线晶体学用于鉴定一些催化中间体，其中包括胍铜酸离子对和铜-炔化物配合物。催化剂和反应产物的对映纯度之间的线性相关性表明在对映确定步骤中存在带有单个胍配体的铜配合物。进一步的实验和计算研究支持烯丙基溴的炔基化经历了由亲核铜酸盐物质催化的抗 SN2' 途径。此外，烯丙基溴的金属辅助外消旋化允许反应以动态动力学方式进行，以高产率提供主要对映异构体。
• Enantioselective Nitroso-Diels-Alder Reaction and Its Application for the Synthesis of (−)-Peracetylated Conduramine A-1
  作者：Chandan Kumar Jana、Stefan Grimme、Armido Studer

  DOI：10.1002/chem.200901331

  日期：2009.9.14

  CuI‐catalyzed enantioselective nitroso‐Diels–Alder reactions (NDA reactions) of 2‐nitrosopyridine with various dienes are presented. The [CuPF6(MeCN)4]/Walphos‐CF3 catalyst system is best suited to catalyze the NDA reaction of various dienes by using 2‐nitrosopyridine as a dienophile. In most of the cases studied, cycloadducts are obtained in quantitative yield with very good to excellent enantioselectivities

  提出了Cu I催化的2-亚硝基吡啶与各种二烯的对映选择性亚硝基-Diels-Alder反应（NDA反应）。[CuPF 6（MeCN）4 ] / Walphos-CF 3催化剂体系最适合通过使用2-亚硝基吡啶作为双亲物来催化各种二烯的NDA反应。在大多数研究的情况下，以定量收率获得很好的对映体选择性的环加合物。基于DFT计算，提出了解释NDA反应的立体化学结果的模型。最后，描述了通过应用对映选择性NDA反应作为关键步骤的有效的短合成（-）-全乙酰化的conduramine A-1。