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3,4-dihydro-2-methyl-2-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one

中文名称
——
中文别名
——
英文名称
3,4-dihydro-2-methyl-2-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one
英文别名
2-methyl-2-phenyl-3,4-dihydro-2H,5H-pyrano[3,2-c]chromen-5-one;2-Methyl-2-phenyl-3,4-dihydropyrano[3,2-c]chromen-5-one
3,4-dihydro-2-methyl-2-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one化学式
CAS
——
化学式
C19H16O3
mdl
——
分子量
292.334
InChiKey
KMLIUTPCMMGHFI-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    3.7
  • 重原子数:
    22
  • 可旋转键数:
    1
  • 环数:
    4.0
  • sp3杂化的碳原子比例:
    0.21
  • 拓扑面积:
    35.5
  • 氢给体数:
    0
  • 氢受体数:
    3

反应信息

  • 作为产物:
    描述:
    4-羟基香豆素丁-1,3-二烯-2-基苯2,4-二硝基苯磺酸二水合物 作用下, 以 1,4-二氧六环 为溶剂, 反应 24.0h, 以33%的产率得到3,4-dihydro-2-methyl-2-phenyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-one
    参考文献:
    名称:
    异戊二烯经酸催化的4-羟基香豆素的区域发散环化:进入吡喃香豆素和吡喃色酮
    摘要:
    开发了一种酸催化的生物质衍生的4-羟基香豆素与异戊二烯的区域发散环化反应,可轻松获得吡喃香豆素和吡喃色酮。
    DOI:
    10.1002/ejoc.201901154
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文献信息

  • Trapping of Active Methylene Intermediates with Alkenes, Indoles or Thiols: Towards Highly Selective Multicomponent Reactions
    作者:Yanlong Gu、Joël Barrault、François Jérôme
    DOI:10.1002/adsc.200900593
    日期:2009.12
    In this paper, a basic method to access new multicomponent reactions (MCRs) is reported. The mechanism of these MCRs is based on the trapping of methylene intermediates, formed in situ by reaction of formaldehyde with electron-rich carbons, with alkene, thiol or indole derivatives. According to our strategy, a wide range of valuable skeletons has been obtained in a one-pot reaction, thus allowing a
    在本文中,报告了一种访问新的多组分反应(MCR)的基本方法。这些MCR的机理基于对亚甲基中间体的捕获,该中间体是通过甲醛与富含电子的碳与烯烃,硫醇或吲哚衍生物反应原位形成的。根据我们的策略,通过一锅法反应已经获得了多种有价值的骨架,因此可以最大程度地减少浪费,成本和劳动力。所提出的方法展示了广泛的底物范围,并且发现羟基或羰基的α-位的富电子碳特别有效。更广泛地讲,这项工作为从最简单的有机组成部分之一甲醛创造分子复杂性和多样性提供了新的工具。
  • The Chemistry of Coumarin Derivatives. Part VI. Diels-Alder Trapping of 3-Methylene-2,4-chromandione. A New Entry to Substituted Pyrano[3,2-c]coumarins
    作者:Giovanni Appendino、Giancarlo Cravotto、Lucio Toma、Rita Annunziata、Giovanni Palmisano
    DOI:10.1021/jo00098a013
    日期:1994.9
    3-Methylene-2,4-chromandione (1) can be generated from dicumarol or from paraformaldehyde and 4-hydroxycoumarin. 1 is a versatile substrate for cycloaddition reactions. Depending on the reaction partner, 1 can behave as an ambident heterodiene or as a dienophile. The reaction was investigated with a series of olefins and dienes, including several isoprenoids. Some generalizations could be drawn and rationalized in terms of HOMO-LUMO interactions. The reaction of 1 and certain asymmetrically substituted olefins gives pyrano[3,2-c]coumarins in a highly regio- and chemoselective way. As an application of this reaction to natural products chemistry, a concise (three steps) synthesis of the prenylated coumarin (+/-)-isoferprenin (35a) is reported.
  • Acid-Catalyzed Regiodivergent Annulation of 4-Hydroxycoumarins with Isoprene: Entry to Pyranocoumarins and Pyranochromones
    作者:Ying Li、Yan-Cheng Hu、Hao Zheng、Ding-Wei Ji、Yu-Feng Cong、Qing-An Chen
    DOI:10.1002/ejoc.201901154
    日期:2019.10.17
    An acid‐catalyzed regiodivergent annulation of biomass‐derived 4‐hydroxycoumarins with isoprene is developed, providing a facile access to pyranocoumarins and pyranochromones.
    开发了一种酸催化的生物质衍生的4-羟基香豆素与异戊二烯的区域发散环化反应,可轻松获得吡喃香豆素和吡喃色酮。
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