6-methyl-2H-chromene | 18385-83-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 6-methyl-2H-chromene
• CAS: 18385-83-6
• 化学式: C₁₀H₁₀O
• 分子量: 146.189
• InChiKey: JCSJECFXHPZAOC-UHFFFAOYSA-N

物化性质

• 沸点：
  134 °C(Press: 22 Torr)
• 密度：
  1.041 g/cm3(Temp: 24 °C)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  6-methyl-2H-chromene 在 邻四氯苯醌 作用下， 以 二氯甲烷 为溶剂， 生成 6-methyl-2H-chromen-2-ol
  参考文献：
  名称：

  2H-Chromenes和醛的催化不对称交叉脱氢偶联

  摘要：

  已经描述了使用邻氯苯甲腈（3,4,5,6-四氯-1,2-苯醌）作为氧化剂的2 H-色烯与醛的催化不对称交叉脱氢偶联反应。有机催化过程可耐受各种结构和电子形式的2 H-色烯和醛，具有良好的收率和较高的对映体控制能力。

  DOI：

  10.1002/cjoc.201800369
• 作为产物：
  描述：

  6-甲基香豆素 在 lithium aluminium tetrahydride 、 乙醚 作用下， 生成 6-methyl-2H-chromene
  参考文献：
  名称：

  Chatterjea, Journal of the Indian Chemical Society, 1959, vol. 36, p. 76,80

  摘要：

  DOI：

文献信息

• [EN] HETEROBICYCLE-SUBSTITUTED AZOLYL BENZENE FUNGICIDES<br/>[FR] FONGICIDES D'AZOLYL BENZÈNE SUBSTITUÉ PAR HÉTÉROBICYCLE
  申请人：DU PONT

  公开号：WO2011059619A1

  公开（公告）日：2011-05-19

  Disclosed are compounds of Formula 1, including all stereoisomers, N oxides, and salts thereof, wherein Y is a 5-membered, fully or partially unsaturated heterocyclic ring containing 2-4 carbon atoms and 2-3 nitrogen atoms as ring members, the ring substituted with Z on a ring member atom connected through an adjacent single ring member atom to the ring member atom attaching the heterocyclic ring to the phenyl ring of Formula 1, and optionally further substituted with up to 2 substituents independently selected from R5 on carbon atom ring members and from R6 on nitrogen atom ring members; Z is an 8-, 9-, 10- or 11-membered fused heterobicyclic ring system containing ring members selected from carbon atoms and 1 to 4 heteroatoms independently selected from up to 2 O, up to 2 S and up to 4 N atoms, wherein up to 3 carbon atom ring members are independently selected from C(=O) and C(=S), and the sulfur atom ring members are independently selected from S(=O)u(=NR7)z, the ring system optionally substituted with substituents independently selected from R8 on carbon atom ring members and from R9 on nitrogen atom ring members; and R1, R2, R3, R4, R5, R6, R7, R8, R9, u and z are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling plant disease caused by a fungal pathogen comprising applying an effective amount of a compound or a composition of the invention.

  公开的是Formula 1的化合物，包括所有立体异构体、N-氧化物和盐，其中Y是一个5元的、完全或部分不饱和的杂环环，含有2-4个碳原子和2-3个氮原子作为环成员，该环在通过相邻的单环成员原子连接到将杂环环连接到Formula 1的苯环上的环成员原子上与Z取代，并且可选地进一步取代最多2个取代基，独立地从碳原子环成员上的R5和氮原子环成员上的R6中选择；Z是一个8、9、10或11元的融合杂双环环系统，其中环成员从碳原子和1到4个异原子中独立选择，这些异原子最多选择2个O、最多2个S和最多4个N原子，其中最多3个碳原子环成员独立选择自C(=O)和C(=S)，硫原子环成员独立选择自S(=O)u(=NR7)z，环系统可选地取代取代基，独立地从碳原子环成员上的R8和氮原子环成员上的R9中选择；以及R1、R2、R3、R4、R5、R6、R7、R8、R9、u和z如披露中所定义。还公开了含有Formula 1的化合物的组合物以及用于控制由真菌病原体引起的植物病害的方法，包括施用本发明的化合物或组合物的有效量。
• Ph3PAuNTf2 as a Superior Catalyst for the Selective Synthesis of 2H-Chromenes: Application to the Concise Synthesis of Benzopyran Natural Products
  作者：Ioannis N. Lykakis、Christina Efe、Charis Gryparis、Manolis Stratakis

  DOI：10.1002/ejoc.201001674

  日期：2011.4

  Ph3PAuNTf2 (≈1 mol-%) catalyzes the selective cycloisomerization of substituted aryl propargyl ethers into 2H-chromenes in excellent yields. Benzofuran byproducts are formed only in the case of electron-deficient arenes, in up to 7 % relative yield. The Ph3PAuNTf2-catalyzed cyclization of aryl propargyl ethers was applied as a key step to the concise synthesis of the naturally occurring benzopyrans

  Ph3PAuNTf2 (≈1 mol-%) 以优异的产率催化取代的芳基炔丙基醚选择性环异构化成 2H-色烯。苯并呋喃副产物仅在缺电子芳烃的情况下形成，相对产率高达 7%。Ph3PAuNTf2 催化的芳炔基醚环化被用作简明合成天然苯并吡喃 seselin、xanthyletin、precocenes I 和 II、8-(3',3'-二甲基烯丙基)wenteria chromene 和 2, 2-二甲基-8-异戊二烯-6-丙烯酸。
• Synthesis of 2<i>H</i>-Chromenes via Hydrazine-Catalyzed Ring-Closing Carbonyl-Olefin Metathesis
  作者：Yunfei Zhang、Janis Jermaks、Samantha N. MacMillan、Tristan H. Lambert

  DOI：10.1021/acscatal.9b03656

  日期：2019.10.4

  The catalytic ring-closing carbonyl-olefin metathesis (RCCOM) of O-allyl salicylaldehydes to form 2H-chromenes is described. The method utilizes a [2.2.1]-bicyclic hydrazine catalyst and operates via a [3 + 2]/retro-[3 + 2] metathesis manifold. The nature of the allyl substitution pattern was found to be crucial, with sterically demanding groups such as adamantylidene or diethylidene offering optimal

  描述了O-烯丙基水杨醛的催化闭环羰基-烯烃复分解（RCCOM）以形成2 H-色烯。该方法利用[2.2.1]双环肼催化剂，并通过[3 + 2] /复古-[3 + 2]复分解歧管进行操作。发现烯丙基取代模式的性质至关重要，其中具有空间需求的基团如金刚烷或二亚乙基可提供最佳结果。显示了对底物范围的调查，并讨论了DFT计算支持的机理。提出了由二亚乙基部分的正戊烷最小化产生的静压力以促进环还原。
• Structurally Diverse α-Substituted Benzopyran Synthesis through a Practical Metal-Free C(sp³)–H Functionalization
  作者：Wenfang Chen、Zhiyu Xie、Hongbo Zheng、Hongxiang Lou、Lei Liu

  DOI：10.1021/ol503004a

  日期：2014.11.21

  A trityl ion-mediated practical C–H functionalization of a variety of benzopyrans with a wide range of nucleophiles (organoboranes and C–H molecules) at ambient temperature has been disclosed. The metal-free reaction has an excellent functional group tolerance and high chemoselectivity and displays a broad scope with respect to both benzopyran and nucleophile partners, efficiently affording a collection

  已公开了在环境温度下，三苯甲基离子介导的各种苯并吡喃具有广泛的亲核试剂（有机硼烷和CH分子）的C–H实用化方法。不含金属的反应具有出色的官能团耐受性和高化学选择性，并且相对于苯并吡喃和亲核体伙伴均显示出广阔的范围，可高效地一步收集一系列具有多种骨架和α-官能度的苯并吡喃。
• Copper-catalyzed oxidative cross-dehydrogenative coupling of 2<i>H</i>-chromenes and terminal alkynes
  作者：Fei Yang、Yangshan Li、Paul E. Floreancig、Xiaoyan Li、Lei Liu

  DOI：10.1039/c8ob00949j

  日期：——

  An efficient copper-catalyzed cross-dehydrogenative coupling of 2H-chromenes and terminal alkynes mediated by DDQ has been established. A protic additive, EtOH, proved to be crucial for harmonizing the oxidation with a subsequent alkynylation step by retaining the oxidation state of an oxocarbenium ion in the form of acetal. The CDC reaction exhibits a good substrate scope, with a range of terminal

  建立了由DDQ介导的2 H-色烯与末端炔烃的高效铜催化交叉脱氢偶联反应。质子添加剂EtOH通过保持乙缩醛形式的氧碳鎓离子的氧化态，对于协调氧化与随后的炔基化步骤至关重要。CDC反应表现出良好的底物范围，对一系列末端芳基和烷基炔具有良好的耐受性。还研究了铜与末端炔烃催化的2 H-亚甲基缩醛的炔基化反应。