7-fluoro-4-methyl-2H-chromen-2-one | 139356-89-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 7-fluoro-4-methyl-2H-chromen-2-one
• 英文别名: 7-fluoro-4-methyl-coumarin；2H-1-Benzopyran-2-one, 7-fluoro-4-methyl-；7-fluoro-4-methylchromen-2-one
• CAS: 139356-89-1
• 化学式: C₁₀H₇FO₂
• 分子量: 178.163
• InChiKey: GEDBPJPKDYKFEM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  7-fluoro-4-methyl-2H-chromen-2-one 在 硫酸 、 硝酸 作用下， 反应 8.0h， 以68%的产率得到7-fluoro-4-methyl-6-nitro-2H-chromen-2-one
  参考文献：
  名称：

  A Three-Channel Fluorescent Probe That Distinguishes Peroxynitrite from Hypochlorite

  摘要：

  A novel fluorescent probe for peroxynitrite, PN600, was rationally designed on the basis of a unique fluorophore assembly approach. PN600 is a green-emitting coumarin derivative. Upon oxidation by peroxynitrite, PN600 is transformed into a highly fluorescent red-emitting resorufin derivative via an orange-emitting intermediate. This three-channel signaling capability enables PN600 to differentiate peroxynitrite from other reactive oxygen and nitrogen species, including hypochlorite and hydroxyl radical. Moreover, PN600 is membrane permeable and compatible with common TRITC filter sets and displays low cytotoxicity. Therefore, PN600 is a promising candidate for in vitro peroxynitrite imaging.

  DOI：

  10.1021/ja305046u
• 作为产物：
  描述：

  羟甲香豆素 在 C₉₄H₁₃₄O₄P₂Pd₂ 、 cesium fluoride 作用下， 以 甲苯 为溶剂， 反应 14.0h， 生成 7-fluoro-4-methyl-2H-chromen-2-one
  参考文献：
  名称：

  An Improved Catalyst System for the Pd-Catalyzed Fluorination of (Hetero)Aryl Triflates

  摘要：

  The stable Pd(0) species [(1,5-cyclooctadiene)(L.Pd)(2)] (L = AdBrettPhos) has been prepared and successfully evaluated as a precatalyst for the fluorination of aryl triflates derived from biologically active and heteroaryl phenols, challenging substrates for our previously reported catalyst system. Additionally, this precatalyst activates at room temperature under neutral conditions, generates 1,5-cyclooctadiene as the only byproduct, and leads to overall cleaner reaction profiles.

  DOI：

  10.1021/ol402859k

文献信息

• Coumarins by Direct Annulation: β‐Borylacrylates as Ambiphilic C ₃ ‐Synthons
  作者：Max Wienhold、John J. Molloy、Constantin G. Daniliuc、Ryan Gilmour

  DOI：10.1002/anie.202012099

  日期：2021.1.11

  2‐halo‐phenol derivatives to generate structurally and electronically diverse coumarins. Key to this [3+3] disconnection is the BPin unit which serves a dual purpose as both a traceless linker for C(sp2)–C(sp2) coupling, and as a chromophore extension to enable inversion of the alkene geometry via selective energy transfer catalysis. Mild isomerisation is a pre‐condition to access 3‐substituted coumarins

  模块化β-硼基丙烯酸酯已被验证为可编程的、两亲性C 3 -合成子，可在2-卤代苯酚衍生物的级联成环中生成结构和电子多样化的香豆素。这种 [3+3] 断开的关键是 BPin 单元，它具有双重用途，既作为 C(sp 2 )–C(sp 2 ) 耦合的无痕连接子，又作为发色团延伸，通过选择性能量转移催化。轻度异构化是获得 3-取代香豆素的先决条件，并提供了分歧的手柄。该方法在含有这种古老化学型的代表性天然产物的合成中得到展示。公开了在 A 环上修饰的 π 扩展雌酮衍生物的简便进入，以证明该方法在生物测定开发或药物再利用中的潜力。
• Dediazoniative functionalization of chromen-4-one and chromen-2-one diazonium-BF4 salts in BMIM-ILs. direct access to the F, I, OSO(CF3) NTf, and N(Tf)2 derivatives, and facile synthesis of chromenone azo-dyes by coupling to activated arenes
  作者：Luisa F. Gutierrez、Yuki Agemura、Kenneth K. Laali

  DOI：10.1016/j.tetlet.2020.152179

  日期：2020.7

  Chromenone-diazonium-BF4 salts were isolated as stable powders by diazotization of the 7-amino-derivatives with NaNO2/HBF4. The 7-Fluoro-derivatives were synthesized by fluorodediazoniation in [BMIM][PF6], while the 7-iodo-derivatives were obtained by iododediazoniation with TMSI/[BMIM][PF6]. Further iodination with NIS furnished the 2,7-di-iodo derivative. Dediazoniation in [BMIM][Tf2N] gave the corresponding

  通过用NaNO 2 / HBF 4对7-氨基衍生物进行重氮化，可分离出稳定的粉末形式的Chromenone-diazonium-BF 4盐。通过在[BMIM] [PF 6 ]中进行氟脱重氮合成7-氟衍生物，而通过TMSI / [BMIM] [PF 6 ]对碘进行重氮重氮化而获得7-碘衍生物。用NIS进一步碘化得到2，7-二碘衍生物。在[BMIM] [Tf 2 N]中进行重氮化，得到相应的色酮-OSO （CF 3）NTf化合物，以及色酮N（Tf）2和7-氟衍生物。铬酮重氮盐在室温下于EtOH水溶液或[BMIM] [PF 6 ]中与异构的三甲氧基苯和二甲基苯胺进行重氮偶合，得到偶氮染料。
• Practical, Large-Scale Preparation of Benzoxepines and Coumarins through Rhodium(III)-Catalyzed C–H Activation/Annulation Reactions
  作者：Moisés Gulías、Daniel Marcos-Atanes、José L. Mascareñas、Marc Font

  DOI：10.1021/acs.oprd.9b00191

  日期：2019.8.16

  Herein we disclose the assembly of benzoxepines and coumarins from 2-alkenylphenol precursors using [Cp*RhCl2]2 as the precatalyst and alkynes or carbon monoxide as reacting partners. The preparation of benzoxepines and coumarins can be scaled up to 33 mmol using low catalyst loadings.

  在本文中，我们公开了使用[Cp * RhCl 2 ] 2作为前催化剂和炔烃或一氧化碳作为反应伙伴，从2-烯基苯酚前体组装苯并二氢吡啶和香豆素。使用低催化剂负载量，苯并二氢吡啶和香豆素的制备规模可扩大至33 mmol。
• [EN] COUMARIN-MODIFIED EPOXY ADHESIVES<br/>[FR] ADHÉSIFS ÉPOXY MODIFIÉS À LA COUMARINE
  申请人：UNIV ARIZONA

  公开号：WO2017132497A1

  公开（公告）日：2017-08-03

  Coumarin modification of epoxies provide for epoxy adhesives that fluoresce under short wave ultraviolet irradiation while remaining invisible under normal light. Furthermore, these modified epoxy adhesives can have increased adhesive bond strengths. In addition, photochemical curing of an epoxy modified coumarin and a hardening agent with UV irradiation at certain wavelengths affords an epoxy adhesive composition. Further UV irradiation of the composition at certain wavelengths causes photoscission, which breaks the crosslinks that make the cured epoxy adhesive insoluble and intractable.

  库马林改性环氧树脂可制成在短波紫外线辐照下发出荧光而在普通光线下不可见的环氧粘合剂。此外，这些改性环氧粘合剂可以具有增强的粘接强度。此外，使用特定波长的紫外线辐照库马林改性环氧树脂和硬化剂进行光化学固化，可以得到一种环氧粘合剂组合物。在特定波长的紫外线辐照下，该组合物进一步发生光解反应，破坏了交联使固化的环氧粘合剂不溶和无法处理。
• LiBF₄-Promoted Aromatic Fluorodetriazenation under Mild Conditions
  作者：Hongjin Zhang、Jianbo Wu、Xingxian Zhang、Mengyang Fan

  DOI：10.1021/acs.joc.3c01239

  日期：2023.9.1

  An efficient and mild fluorination method through LiBF4-promoted aromatic fluorodetriazenation of 3,3-dimethyl-1-aryltriazenes is developed. The reaction proceeds smoothly and tends to complete within 2 h in the absence of a protic acid or strong Lewis acid. This method tolerates a wide range of functional groups and affords the aryl fluoride products in moderate to excellent yields.

  开发了一种通过LiBF 4促进的3,3-二甲基-1-芳基三氮烯的芳香族氟代三氮烯化反应高效且温和的氟化方法。在不存在质子酸或强路易斯酸的情况下，反应顺利进行并倾向于在2小时内完成。该方法可耐受多种官能团，并以中等至优异的收率提供芳基氟化物产物。