2-硝基-4-乙基苯酚 | 56520-98-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 中文名称: 2-硝基-4-乙基苯酚
• 中文别名: 4-乙基-2-硝基苯酚
• 英文名称: 4-ethyl-2-nitrophenol
• CAS: 56520-98-0
• 化学式: C₈H₉NO₃
• mdl: MFCD16742721
• 分子量: 167.164
• InChiKey: NKWRRUKHBWTRPY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  66
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 海关编码：
  2908999090
• 包装等级：
  III
• 危险类别：
  6.1
• 危险性防范说明：
  P501,P273,P270,P264,P280,P302+P352,P337+P313,P305+P351+P338,P362+P364,P332+P313,P301+P312+P330
• 危险品运输编号：
  2811
• 危险性描述：
  H301,H315,H319,H412

反应信息

• 作为反应物：
  描述：

  2-硝基-4-乙基苯酚 在 palladium on activated charcoal 氢氧化钾 、 氢气 作用下， 以 乙醇 为溶剂， 反应 32.0h， 生成 5-Ethyl-2(3H)-benzo[D]oxazolethione
  参考文献：
  名称：

  Benzoxazole Derivatives as Novel 5-HT₃ Receptor Partial Agonists in the Gut

  摘要：

  A series of benzoxazoles with a nitrogen-containing heterocyclic substituent at the 2-position was prepared and evaluated for 5-HT3 partial agonist activity on isolated guinea pig ileum. The nature of the substituent at the 5-position of the benzoxazole ring affected the potency for the 5-HT3 receptor, and the 5-chloro derivatives showed increased potency and lowered intrinsic activity. 5-Chloro-7-methyl-2-(4-methyl-1-homopiperazinyl)benzoxazole (6v) exhibited a high binding affinity in the same range as that of the 5-HT3 antagonist granisetron, and its intrinsic activity was 12% of that of 5-HT. Compound 6v inhibited 5-HT-evoked diarrhea but did not prolong the transition time of glass beads in the normal distal colon even at a dose of 100 times the ED50 for diarrhea inhibition in mice. Compounds of this type are expected to be effective for the treatment of irritable bowel syndrome without the side effect of constipation.

  DOI：

  10.1021/jm9801004
• 作为产物：
  描述：

  4-乙基苯酚 在 三甲基氯硅烷 、 copper(ll) sulfate pentahydrate 、 硝酸胍 作用下， 以 乙腈 为溶剂， 以78%的产率得到2-硝基-4-乙基苯酚
  参考文献：
  名称：

  硝酸胍对富电子芳烃的无酸铜催化亲电硝化反应

  摘要：

  报道了一种实用的铜催化富电子芳烃与三甲基氯硅烷和硝酸胍的硝化反应。在无酸、开瓶和操作简单的条件下，在环境温度下以中等至优异的产率 (32–99%) 生成各种硝化产物。

  DOI：

  10.1021/acs.joc.1c03020

文献信息

• Novel Potassium Channel Activators: Synthesis and Structure-Activity Relationship Studies of 3,4-Dihydro-2H-1,4-benzoxazine Derivatives.
  作者：Yuzo MATSUMOTO、Ryuji TSUZUKI、Akira MATSUHISA、Kazuhisa TAKAYAMA、Toru YODEN、Wataru UCHIDA、Masaharu ASANO、Shigeo FUJITA、Isao YANAGISAWA、Takashi FUJIKURA

  DOI：10.1248/cpb.44.103

  日期：——

  Strong potassium channel-activating effects were found among a series of novel 4-substituted 3, 4-dihydro-2H-1, 4-benzoxazine derivatives. The key step in preparation was the nucleophilic substitution of 3, 4-dihydro-2H-1, 4-benzoxazine (3) with activated halogenopyridines, such as halogenopyridine N-oxides (15a-c) and the borane adduct (15d) of 4-bromopyridine. Structure-activity relationship studies identified 2-(3, 4-dihydro-2, 2-dimethyl-6-nitro-2H-1, 4-benzoxazin-4-yl)pyridine-1-oxide (16a : YM934) as the optimal compound. This compound (16a) showed a more potent oral antihypertensive effect than cromakalim in conscious spontaneously hypertensive rats.

  在一系列新型的4-取代3,4-二氢-2H-1,4-苯并氧氮杂䓬衍生物中，发现了强烈的钾通道激活效应。制备的关键步骤是用3,4-二氢-2H-1,4-苯并氧氮杂䓬（3）与活性卤代吡啶进行亲核取代反应，例如卤代吡啶N-氧化物（15a-c）和4-溴吡啶的硼烷加合物（15d）。构效关系研究表明，2-（3,4-二氢-2,2-二甲基-6-硝基-2H-1,4-苯并氧氮杂䓬-4-基）吡啶-1-氧化物（16a：YM934）为最佳化合物。该化合物（16a）在清醒的自发性高血压大鼠中显示出比克罗卡林更强的口服降压效果。
• Pyrazolopyrimidines as therapeutic agents
  申请人：Abbott Laboratories

  公开号：US20020156081A1

  公开（公告）日：2002-10-24

  The present invention provides compounds of Formula I, 1 including pharmaceutically acceptable salts and/or prodrugs thereof, where G, R 2 , and R 3 are defined as described herein.

  本发明提供了公式I的化合物，包括其药学上可接受的盐和/或前药，其中G、R2和R3的定义如本文所述。
• Inhibitors of cancer cell, T-cell and keratinocyte proliferation
  申请人：Leban Johann

  公开号：US20070037753A1

  公开（公告）日：2007-02-15

  The invention relates to compounds of the general formula (I) and salts and physiologically functional derivatives thereof, wherein Y is —NR a R b , —NR c C═ONR a R b, —NR c C═SNR a R b , —NR c C═NR d N a R b , heterocycle, —C═ONR a R b , heterocycle, or aryl; n is 0 to 8; m is 0, or 1; r is 0 to 3; t is 0 to 3; X is O or N; Z is CH 2 , C═O, C═S or a single bond; Z 1 is CO—R 2 , CS—R 2 , (CH 2 ) t —R 2 or the side-chain of a naturally occuring amino acid;, Z 2 is CO—R 2 , CS—R 2 or (CH 2 ) t —R 3 or the side-chain of a naturally occuring amino acid; Z 3 is CO—R 2 , CS—R 2 or (CH 2 ) t —R 4 or the side-chain of a naturally occuring amino acid; Z 4 is H, alkyl, alkoxy, or cycloalkyl; R 1 , R 2 , R 3 , and R 4 are independently from each other H, OH, SH, NH 2 , CN, NO 2 , alkyl, cycloalkyl, heterocycloalkyl, haloalkyl, alkylthio, haloalkyloxy, hydroxyalkyl, hydroxyalkylamino, alkylamino, alkylaryl, alkylsulfinyl, alkylsulfonyl, alkylthioalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, alkoxyalkyl, alkoxy, aryloxy, heteroaryl, aryl, or halogen.

  该发明涉及一般式（I）化合物及其盐和生理功能衍生物， 其中 Y为—NR a R b ，—NR c C═ONR a R b， —NR c C═SNR a R b ，—NR c C═NR d N a R b ，杂环，—C═ONR a R b ，杂环或芳基；n为0至8；m为0或1；r为0至3；t为0至3；X为O或N； Z为CH 2 ，C═O，C═S或单键； Z 1 为CO—R 2 ，CS—R 2 ，（CH 2 ） t —R 2 或天然氨基酸的侧链；， Z 2 为CO—R 2 ，CS—R 2 或（CH 2 ） t —R 3 或天然氨基酸的侧链； Z 3 为CO—R 2 ，CS—R 2 或（CH 2 ） t —R 4 或天然氨基酸的侧链； Z 4 为H，烷基，烷氧基或环烷基； R 1 ，R 2 ，R 3 和R 4 彼此独立地为H，OH，SH，NH 2 ，CN，NO 2 ，烷基，环烷基，杂环烷基，卤代烷基，烷硫基，卤代烷氧基，羟基烷基，羟基氨基，烷基氨基，烷基芳基，烷基亚砜基，烷基砜基，烷硫基烷基，烷基亚砜基烷基，烷基砜基烷基，烷氧基烷基，烷氧基，芳氧基，杂芳基，芳基或卤素。
• Iodine(III)-Catalyzed Electrophilic Nitration of Phenols via Non-Brønsted Acidic NO₂⁺ Generation
  作者：Kevin A. Juárez-Ornelas、J. Oscar C. Jiménez-Halla、Terumasa Kato、César R. Solorio-Alvarado、Keiji Maruoka

  DOI：10.1021/acs.orglett.8b04141

  日期：2019.3.1

  The first catalytic procedure for the electrophilic nitration of phenols was developed using iodosylbenzene as an organocatalyst based on iodine(III) and aluminum nitrate as a nitro group source. This atom-economic protocol occurs under mild, non-Brønsted acidic and open-flask reaction conditions with a broad functional-group tolerance including several heterocycles. Density functional theory (DFT)

  使用碘基苯作为基于碘（III）和硝酸铝作为硝基基团来源的有机催化剂，开发了用于苯酚亲电硝化的第一个催化程序。该原子经济方案发生在温和的，非布朗斯台德酸性和开放式烧瓶反应条件下，具有宽泛的官能团耐受性，包括多个杂环。（SMD：MeCN）Mo8-HX /（LANLo8 + f，6-311 + G *）水平的密度泛函理论（DFT）计算表明反应通过阳离子途径进行，该途径有效地产生了NO 2 +离子，从而是中性条件下的硝化物种。
• Gonadotropin Releasing Hormone Receptor Antagonist, Preparation Method Thereof And Pharmaceutical Composition Comprising The Same
  申请人：Kim Seon Mi

  公开号：US20130137661A1

  公开（公告）日：2013-05-30

  Disclosed are compounds useful as gonadotrophin-releasing hormone (“GnRH”) receptor antagonist.

  披露了作为促性腺激素释放激素（“GnRH”）受体拮抗剂有用的化合物。