7-methoxy-2-(4-nitrophenyl)benzo[b]furan

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 2-芳基苯并呋喃类黄酮
• 英文名称: 7-methoxy-2-(4-nitrophenyl)benzo[b]furan
• 英文别名: 7-methoxy-2-(4-nitrophenyl)benzofuran；7-Methoxy-2-(4-nitrophenyl)-1-benzofuran
• 化学式: C₁₅H₁₁NO₄
• 分子量: 269.257
• InChiKey: KLBLAJPILOMZFR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  68.2
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  8-甲氧基-3-(4-硝基苯基)-2H-色烯-2-酮 在 1,10-菲罗啉 、 copper(l) chloride 、 sodium hydroxide 作用下， 以 二甲基亚砜 为溶剂， 反应 24.0h， 以45%的产率得到7-methoxy-2-(4-nitrophenyl)benzo[b]furan
  参考文献：
  名称：

  Copper-catalyzed decarboxylative intramolecular C–O coupling: synthesis of 2-arylbenzofuran from 3-arylcoumarin

  摘要：

  建立了一种铜催化的脱羧分子内 CâO 偶联反应。在氯化铜/1,10-菲罗啉存在的有氧条件下，以 3-芳基香豆素为原料一锅制备了多种 2-芳基苯并呋喃，收率从 26% 到 84%不等。

  DOI：

  10.1039/c3ra46414h

文献信息

• Derivatives of benzofuran or benzodioxole
  申请人：Kyowa Hakko Kogyo Co., Ltd.

  公开号：US06514996B2

  公开（公告）日：2003-02-04

  An oxygen-containing heterocyclic compound represented by following Formula (I): wherein R1 and R2 independently represent hydrogen, lower alkyl, cyano, —(CH2)n—E1—CO—G1 (wherein E1 represents a bond, O, or NH; and G1 represents hydrogen, substituted or unsubstituted lower alkyl, OR6, or NR7R8; and n represents an integer of 0 to 4), or the like; R1 and R2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R2, and R11 or R13 described below are combined to form a single bond; R3 represents hydrogen, phenyl, or halogen; R4 represents hydroxy, lower alkoxy, or the like; A represents —C(R9)(R10)— or O; B represents O, NR11, —C(R12)(R13)—, or —C(R14)(R15)—C(R16)(R17)—; D represents (i) —C(R18)(R19)—X— (wherein X represents —C(R21)(R22)—, S, or NR23), (ii) —C(R19a)═Y— [Y represents —C(R24)—Z— (wherein Z represents CONH, CONHCH2, or a bond), or N], or (iii) a bond; and R5 represents aryl, an aromatic heterocyclic group, cycloalkyl, pyridine-N-oxide, cyano, or lower alkoxycarbonyl; or pharmaceutically acceptable salts thereof.

  根据您的要求，以下是该化学公式（I）的中文翻译： 一个含氧杂环化合物，由以下公式（I）表示：其中R1和R2独立代表氢、低级烷基、氰基、—(CH2)n—E1—CO—G1（其中E1代表一个键、O或NH；G1代表氢、取代或未取代的低级烷基、OR6或NR7R8；n代表0到4的整数），或类似物；R1和R2共同代表与相邻碳原子一起的饱和碳环；或者R2与下面描述的R11或R13结合形成一个单键；R3代表氢、苯基或卤素；R4代表羟基、低级烷氧基或类似物；A代表—C(R9)(R10)—或O；B代表O、NR11、—C(R12)(R13)—或—C(R14)(R15)—C(R16)(R17)—；D代表（i）—C(R18)(R19)—X—（其中X代表—C(R21)(R22)—、S或NR23）、（ii）—C(R19a)═Y— [Y代表—C(R24)—Z—（其中Z代表CONH、CONHCH2或一个键）或N]，或（iii）一个键；R5代表芳基、芳香杂环基、环烷基、吡啶-N-氧化物、氰基或低级烷氧基甲酸；或其药物可接受的盐。
• DERIVATIVES OF BENZOFURAN OR BENZODIOXOLE
  申请人：——

  公开号：US20020128290A1

  公开（公告）日：2002-09-12

  An oxygen-containing heterocyclic compound represented by following Formula (I): 1 wherein R 1 and R 2 independently represent hydrogen, lower alkyl, cyano, —(CH 2 ) n —E 1 —CO—G 1 (wherein E 1 represents a bond, O, or NH; and G 1 represents hydrogen, substituted or unsubstituted lower alkyl, OR 6 , or NR 7 R 8 ; and n represents an integer of 0 to 4), or the like; R 1 and R 2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R 2 , and R 11 or R 13 described below are combined to form a single bond; R 3 represents hydrogen, phenyl, or halogen; R 4 represents hydroxy, lower alkoxy, or the like; A represents —C(R 9 )(R 10 )— or O; B represents O, NR 11 , —C(R 12 )(R 13 )—, or —C(R 14 )(R 15 )—C(R 16 )(R 17 )—; D represents (i) —C(R 18 )(R 19 )—X— (wherein X represents —C(R 21 )(R 22 )—, S, or NR 23 ), (ii) —C(R 19a )═Y— [Y represents —C(R 24 )—Z— (wherein Z represents CONH, CONHCH 2 , or a bond), or N], or (iii) a bond; and R 5 represents aryl, an aromatic heterocyclic group, cycloalkyl, pyridine-N-oxide, cyano, or lower alkoxycarbonyl; or pharmaceutically acceptable salts thereof.

  以下是由下式（I）表示的含氧杂环化合物： 其中R1和R2独立地表示氢、较低的烷基、氰基、—（CH2）n—E1—CO—G1（其中E1表示键、O或NH；G1表示氢、取代或未取代的较低烷基、OR6或NR7R8；n表示0到4的整数），或类似物；R1和R2结合表示与相邻碳原子一起形成饱和碳环；或R2，以及下文描述的R11或R13结合形成单键；R3表示氢、苯基或卤素；R4表示羟基、较低的烷氧基或类似物；A表示—C（R9）（R10）—或O；B表示O、NR11、—C（R12）（R13）—或—C（R14）（R15）—C（R16）（R17）—；D表示（i）—C（R18）（R19）—X—（其中X表示—C（R21）（R22）—、S或NR23）、（ii）—C（R19a）═Y—［Y表示—C（R24）—Z—（其中Z表示CONH、CONHCH2或键），或N］，或（iii）键；R5表示芳基、芳香杂环基、环烷基、吡啶-N-氧化物、氰基或较低烷氧羰基；或其药学上可接受的盐。
• Catalyst-Free Synthesis of Benzofuran Derivatives from Cascade Reactions between Nitroepoxides and Salicylaldehydes
  作者：Mohammad A. Ranjbari、Hossein Tavakol

  DOI：10.1021/acs.joc.1c00143

  日期：2021.3.19

  Different benzofuran derivatives are synthesized via a catalyst-free reaction between nitroepoxides and salicylaldehydes. In the employed methodology, K2CO3 and DMF have been used at 110 °C, and the reactions were completed after 12 h in 33–84% yields. The highest yields were obtained using 3-nitrosalicylaldehyde. Finally, a plausible mechanism was proposed for the reaction, and some evidence was provided

  通过硝基环氧化物和水杨醛之间的无催化剂反应合成不同的苯并呋喃衍生物。在所采用的方法中，已在110°C下使用K 2 CO 3和DMF，反应12小时后以33-84％的收率完成反应。使用3-硝基水杨醛可获得最高的收率。最后，提出了一种可行的反应机理，并为该机理提供了一些证据，例如检测释放的乙酸根阴离子（使用FTIR）以及分离和确定关键中间体的结构。
• 2-Phenylbenzo[ b ]furans: Synthesis and promoting activity on estrogen biosynthesis
  作者：Wenchen Pu、Yun Yuan、Danfeng Lu、Xin Wang、Hanwei Liu、Chun Wang、Fei Wang、Guolin Zhang

  DOI：10.1016/j.bmcl.2016.10.013

  日期：2016.11

  2-phenylbenzo[b]furan glycosides could promote estrogen biosynthesis. To find high active 2-phenylbenzo[b]furans, fifty-four 2-phenylbenzo[b]furans were prepared via four strategies according to corresponding substrate scopes. Biological evaluation in HEK293A cells showed that some compounds exhibited promotive activity on estrogen biosynthesis. 2-(4-Chlorophenyl)-7-methoxybenzo[b]furan possessed the

  雌激素的生物合成对人类的许多生理过程至关重要。雌激素水平异常与多种疾病密切相关，包括乳腺癌和骨质疏松症。以前我们发现2-苯基苯并[b]呋喃糖苷可以促进雌激素的生物合成。为了找到高活性的2-苯基苯并[b]呋喃，根据相应的底物范围，通过四种策略制备了五十四种2-苯基苯并[b]呋喃。HEK293A细胞的生物学评估表明，某些化合物对雌激素的生物合成具有促进作用。2-（4-氯苯基）-7-甲氧基苯并[b]呋喃具有最高的活性，EC50值为14.68μM。此外，这些化合物不会影响HEK292A细胞中的芳香化酶表达，
• Syntheses, spectroscopic and crystallographic characterizations of 4-nitrobenzyloxy derivatives and benzofurans from ortho-substituted benzaldehydes and 4-nitrobenzyl bromide
  作者：Zeliha Hayvali、Hakan Dal、Pinar Köksal、Duygu Şahin、Tuncer Hökelek

  DOI：10.1007/s11224-010-9618-6

  日期：2010.8

  A series of benzyloxybenzaldehyde derivatives (1–3) were prepared by the reactions of 4-nitrobenzyl bromide with 4-hydroxy-3-methoxybenzaldehyde (vanillin), 2-hydroxy-3-methoxybenzaldehyde (o-vanillin) and 2-hydroxy-4-methoxybenzaldehyde. When the reaction time is quite long, benzofuran derivatives (4 and 5) were obtained by the reactions of ortho-hydroxyaldehydes with the 4-nitrobenzyl bromide. Condensation reactions among the three benzyloxybenzaldehyde derivatives (1–3) with 2-aminomethylfuran (furfurylamine) yielded the new imine compounds (6–8). The structures of these aldehydes (1–3), benzofuran derivatives (4 and 5) and imine compounds (6–8) were confirmed on the basis of elemental analyses, IR, 1H NMR and 13C NMR and mass spectroscopy. The solid-state structures of compounds 4–6 were determined by single-crystal X-ray crystallography.

  通过 4-硝基溴化苄与 4-羟基-3-甲氧基苯甲醛（香兰素）、2-羟基-3-甲氧基苯甲醛（邻香兰素）和 2-羟基-4-甲氧基苯甲醛的反应，制备了一系列苄氧基苯甲醛衍生物（1-3）。当反应时间较长时，正羟基醛与 4-硝基溴化苄反应可得到苯并呋喃衍生物（4 和 5）。三种苄氧基苯甲醛衍生物（1-3）与 2-氨基甲基呋喃（糠胺）发生缩合反应，生成了新的亚胺化合物（6-8）。这些醛（1-3）、苯并呋喃衍生物（4 和 5）和亚胺化合物（6-8）的结构已通过元素分析、红外光谱、1H NMR 和 13C NMR 以及质谱得到确认。化合物 4-6 的固态结构是通过单晶 X 射线晶体学确定的。