2,6-二羟基-4-甲基吡啶 | 4664-16-8

• 物质功能分类: 医药中间体 - 杂环化合物 - 吡啶类化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 中文名称: 2,6-二羟基-4-甲基吡啶
• 中文别名: 2,5-二氟苯酚；6-羟基-4-甲基吡啶-2(1H)-酮；6-羟基-4-甲基-2-吡啶
• 英文名称: 4-methyl-2,6-dihydroxypyridine
• 英文别名: 4-methyl-2,6-dihydroxy-pyridine；2,6-Dihydroxy-4-methylpyridine；4-methyl-pyridine-2,6-diol；4-Methyl-pyridin-2,6-diol；6-hydroxy-4-methyl-2-pyridone；2,6-dihydroxy 4-methyl pyridine；6-Hydroxy-4-methylpyridin-2(1h)-one；6-hydroxy-4-methyl-1H-pyridin-2-one
• CAS: 4664-16-8
• 化学式: C₆H₇NO₂
• mdl: MFCD00040464
• 分子量: 125.127
• InChiKey: JJHVYGVVMBYCMQ-UHFFFAOYSA-N

物化性质

• 熔点：
  195-198°C
• 沸点：
  356℃
• 密度：
  1.269
• 闪点：
  169℃
• 稳定性/保质期：
  常温常压下稳定，无色透明的液体。

计算性质

• 辛醇/水分配系数(LogP)：
  0
• 重原子数：
  9
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.166
• 拓扑面积：
  49.3
• 氢给体数：
  2
• 氢受体数：
  2

安全信息

• 海关编码：
  2933399090
• 储存条件：
  请将药物存放在避光、通风且干燥的地方，并密封保存。

反应信息

• 作为反应物：
  描述：

  2,6-二羟基-4-甲基吡啶 在 四(三苯基膦)钯 三溴化磷 作用下， 以 甲苯 为溶剂， 反应 22.0h， 生成 4'-甲基-2,2':6',2''-三联吡啶
  参考文献：
  名称：

  An Efficient and Easy Route to Trimethyl Derivatives of 2,2':6',2"-Terpyridine

  摘要：

  通过应用斯蒂尔偶联反应，2,2':6',2"-三联吡啶的三甲基衍生物已成功制备，产率良好。

  DOI：

  10.1055/s-2000-8216
• 作为产物：
  描述：

  2-氨基-4-甲基-6-氧代-1H-吡啶-3-甲酰胺 在 硫酸 作用下， 生成 2,6-二羟基-4-甲基吡啶
  参考文献：
  名称：

  [2-ami基乙酰胺与β-二羰基化合物的缩合。含氮杂环的合成。IX ..]。

  摘要：

  DOI：

  10.1002/ardp.19542870703

文献信息

• Compositions for oxidatively dyeing keratin fibers and methods for using such compositions
  申请人：Lim Mu'Ill

  公开号：US20070209123A1

  公开（公告）日：2007-09-13

  Compositions for dyeing keratin fibers comprise (a) at least one keratin dyeing compound selected from aromatic systems which comprise at least one boronic acid or boronic ester moiety and which are capable of forming upon oxidation a nucleophile or an electrophile, (b) at least one additional keratin dyeing compound selected from the group consisting of auxiliary developers and auxiliary couplers, and (c) a cosmetically suitable medium. Methods for oxidatively dyeing keratin fibers comprise the steps of applying such compositions in the presence of an oxidizing agent and rinsing the hair. A hair coloring product in kit form comprises a first separately packaged container comprising a composition as described above and a second separately packaged container comprising an oxidizing agent.

  用于染色的组合物包括：(a)至少一种选自含有至少一个硼酸或硼酸酯基团的芳香族系统的角蛋白染料化合物，这些化合物在氧化时能够形成亲核物或亲电子物；(b)至少一种额外的角蛋白染料化合物，选自辅助显色剂和辅助偶联剂的组合；(c)一种化妆品适用的介质。氧化染角蛋白纤维的方法包括在氧化剂存在下应用这样的组合物，并冲洗头发。一种套装形式的头发染色产品包括一个第一独立包装容器，其中包含上述描述的组合物，以及一个第二独立包装容器，其中包含氧化剂。
• [EN] 2, 6-DISUBSTITUTED PYRIDINES AND 2, 4-DISUBSTITUTED PYRIMIDINES AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS<br/>[FR] PYRIDINES 2, 6-DISUBSTITUÉES ET PYRIMIDINES 2, 4-DISUBSTITUÉES EN TANT QU'ACTIVATEURS DE GUANYLATE CYCLASE SOLUBLE
  申请人：SMITHKLINE BEECHAM CORP

  公开号：WO2009068652A1

  公开（公告）日：2009-06-04

  Disclosed are compounds of formula (I): wherein n represents 1 or 2; each R1 independently represents halo or trifluoromethyl; wherein halo represents fluoro, chloro or bromo; R2 represents hydrogen or C1-3alkyl; X represents N or CH; wherein -Z- represents a group selected from: (A), (B) or (C), wherein R3 represents trifluoromethyl or C1-3alkyl; and R4 represents hydrogen, trifluoromethyl or C1-3alkyl; with the proviso that where Z represents a thiophene group and X represents N, R2 cannot represent C1-3alkyl; and when X represents CH, -Z- can additionally represent a group selected from: (D) or (E) or salts thereof which activate soluble guanylate cyclase (sGC) pharmaceutical compositions containing them, their use is medicine, and processes for their preparation.

  化合物的结构式（I）如下：其中n代表1或2；每个R1独立地代表卤素或三氟甲基；其中卤素代表氟、氯或溴；R2代表氢或C1-3烷基；X代表N或CH；其中-Z-代表从以下选取的基团：（A）、（B）或（C），其中R3代表三氟甲基或C1-3烷基；R4代表氢、三氟甲基或C1-3烷基；但是当Z代表噻吩基团且X代表N时，R2不能代表C1-3烷基；当X代表CH时，-Z-还可以代表从以下选取的基团：（D）或（E）或它们的盐，这些化合物激活可溶性鸟苷酸环化酶（sGC），含有它们的药物组合物，其用途是医药学，以及它们的制备方法。
• Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
  申请人：Lim Mu'lll

  公开号：US20060156481A1

  公开（公告）日：2006-07-20

  Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one N-oxides of six-membered rings with one or two nitrogen atoms keratin dyeing compound. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.

  氧化染色角蛋白纤维的配方，包括适用于染色的介质和至少一种含有一个或两个氮原子的六元环N-氧化物的角蛋白染料化合物。一种氧化染色角蛋白纤维的方法，包括在氧化剂存在下施用这种配方，以足够时间发展所需的着色。
• Coupling compounds and hair dyeing compositions containing them
  申请人：DyStar Textilfarben GmbH & Co. Deutschland KG

  公开号：EP1847528A1

  公开（公告）日：2007-10-24

  The present invention refers to compounds of the formula (I) wherein R1 is (C1-C4)-alkyl, (C1-C4)-alkyl which is substituted by hydroxy, (C1-C4)-alkoxy, hydroxy-(C1-C4)-alkoxy, CN, -COOR5, -CON(R5)2 or -N(R5)2 or is phenyl; R2 is hydrogen, methyl or ethyl; R3 is (C1-C4)-alkylsulfonyl, (C1-C4)-alkylsulfonyl which is substituted by hydroxy, halogen, cyano, (C1-C4)-alkoxy or -N(R5)2 or is -SO2-CH=CH2, -SO2N(R5)2 or -PO(OR5)2; R4 is hydrogen, (C2-C4)-alkyl which is substituted by hydroxy, (C1-C4)-alkoxy or hydroxy-(C1-C4)-alkoxy; each of R5, independently is hydrogen, (C1-C4)-alkyl or hydroxy-(C2-C4)-alkyl; whereas R3 is not -NHSO2CH3 if R2 and R4 are both hydrogen and R1 is methyl, as well as hair dye compostions containing them.

  本发明涉及以下式(I)的化合物其中R1是(C1-C4)-烷基，被羟基取代的(C1-C4)-烷基，(C1-C4)-氧烷基，羟基-(C1-C4)-氧烷基，CN，-COOR5，-CON(R5)2或-N(R5)2或是苯基；R2是氢，甲基或乙基；R3是(C1-C4)-烷基磺酰基，被羟基，卤素，氰基，(C1-C4)-氧烷基或-N(R5)2取代的(C1-C4)-烷基磺酰基，或是-SO2-CH=CH2，-SO2N(R5)2或-PO(OR5)2；R4是氢，被羟基，(C1-C4)-氧烷基或羟基-(C1-C4)-氧烷基取代的(C2-C4)-烷基；R5中的每一个独立地是氢，(C1-C4)-烷基或羟基-(C2-C4)-烷基；其中如果R2和R4都是氢且R1是甲基，则R3不是-NHSO2CH3，以及含有它们的染发组合物。
• Coupling compounds and hair dyeing compositions containg them
  申请人：DyStar Textilfarben GmbH & Co. Deutschland KG

  公开号：EP1847526A1

  公开（公告）日：2007-10-24

  The present invention refers to Compound of the formula (I) wherein X is oxygen or sulphur; R1 is (C1-C4)-alkyl, (C1-C4)-alkyl which is substituted by hydroxy, (C1-C4)-alkoxy, hydroxy-(C1-C4)-alkoxy, CN, -COOR6, -CON(R6)2 or -N(R6)2 or is phenyl; R2 is hydrogen, methyl or ethyl; R3 is hydrogen, (C1-C4)-alkylsulfonyl, (C1-C4)-alkylsulfonyl which is substituted by hydroxy, halogen, cyano, (C1-C4)-alkoxy or -N(R6)2 or is -SO2-CH=CH2, -SO2N(R6)2 or -PO(OR6)2; or R3 is hydroxy-(C1-C4)-alkyl if R4 and R5 are not hydrogen ; R4 is hydrogen, (C1-C4)-alkyl, (C1-C4)-alkyl which is substituted by hydroxy, (C1-C4)-alkoxy, or hydroxy-(C1-C4)-alkoxy ; R5 is hydrogen, (C1-C4)-alkyl, (C1-C4)-alkyl which is substituted by hydroxy, (C1-C4)-alkoxy or hydroxy-(C1-C4)-alkoxy ; R6 is hydrogen, (C1-C4)-alkyl or hydroxy-(C1-C4)-alkyl; whereas R3, R4 and R6 are all hydrogen or are different and whereas the compound of the formula (I) wherein R1 is methyl and R2 to R5 are hydrogen is diesclaimt, as well as hair dye compositions containing them.

  本发明涉及式(I)化合物，其中X为氧或硫；R1为(C1-C4)烷基、被羟基取代的(C1-C4)烷基、(C1-C4)烷氧基、羟基-(C1-C4)烷氧基、氰基、-COOR6、-CON(R6)2或-N(R6)2或为苯基；R2为氢、甲基或乙基；R3为氢、(C1-C4)烷基磺酰基、被羟基、卤素、氰基、(C1-C4)烷氧基或-N(R6)2取代的(C1-C4)烷基磺酰基，或为-SO2-CH=CH2、-SO2N(R6)2或-PO(OR6)2；或者，当R4和R5不为氢时，R3为羟基-(C1-C4)烷基；R4为氢、(C1-C4)烷基、被羟基、(C1-C4)烷氧基或羟基-(C1-C4)烷氧基取代的(C1-C4)烷基；R5为氢、(C1-C4)烷基、被羟基、(C1-C4)烷氧基或羟基-(C1-C4)烷氧基取代的(C1-C4)烷基；R6为氢、(C1-C4)烷基或羟基-(C1-C4)烷基；其中R3、R4和R6均为氢或不同，并且式(I)化合物中R1为甲基且R2至R5均为氢的化合物除外，以及含有它们的染发组合物。