3-methyl-5-(N-methylamino)-4-nitroisothiazole | 132026-87-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 3-methyl-5-(N-methylamino)-4-nitroisothiazole
• 英文别名: 3-methyl-5-methylamino-4-nitroisothiazole；N,3-dimethyl-4-nitro-1,2-thiazol-5-amine
• CAS: 132026-87-0
• 化学式: C₅H₇N₃O₂S
• 分子量: 173.195
• InChiKey: ALPHUAKIIAUMHR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  99
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  3-methyl-5-(N-methylamino)-4-nitroisothiazole 在 盐酸 、 sodium hydroxide 、 铁粉 作用下， 以 四氢呋喃 、 乙醇 、 水 为溶剂， 反应 2.5h， 生成 3,6-dimethyl-5-(methylthio)imidazo<4,5-d>isothiazole
  参考文献：
  名称：

  The Synthesis of Substituted Imidazo[4,5-d]isothiazoles via the Ring Annulation of Isothiazole Diamines: An Investigation of the Chemical, Physical, and Biological Properties of Several Novel 5:5 Fused Analogs of the Purine Ring System

  摘要：

  A series of imidazo[4,5-d]isothiazoles have been prepared from isothiazole precursors via a strategy employing ring annulation of the appropriate isothiazole diamine. In this manner, several 4,5-diaminoisothiazoles were converted into the corresponding 5-(alkylthio)imidazo[4,5-d]isothiazoles via a two-step, one-pot procedure in good yield. This methodology proved quite general and allows for the introduction of various substituents onto the 3-, 5-, and 6-positions of this ring system. Reaction with Raney nickel destroyed the ring system, presumably through removal of the sulfur at the 1-position, and the 5-mercapto substituent could not be removed selectively. Ring annulation with diethoxymethyl acetate provided the 5-unsubstituted imidazo[4,5-d]isothiazoles but was less general, and only the 3-methyl derivatives could be prepared. Imidazo[4,5-d]isothiazoles bearing no substituents on nitrogen readily underwent alkylation to afford mixtures of the N-4- and N-6-substituted compounds. The chemical and physical properties of these novel heterocycles were studied in detail, and the structure of 3-methyl-5-methanesulfonyl-6-(phenylmethyl)imidazo[4,5-d] isothiazole was verified by single crystal X-ray diffraction studies.

  DOI：

  10.1021/jo00125a016
• 作为产物：
  描述：

  3-甲基-4-硝基-1,2-噻唑-5-胺 、 碘甲烷 在 sodium hydride 作用下， 以 乙腈 、 paraffin 为溶剂， 以80%的产率得到3-methyl-5-(N-methylamino)-4-nitroisothiazole
  参考文献：
  名称：

  The Synthesis of Substituted Imidazo[4,5-d]isothiazoles via the Ring Annulation of Isothiazole Diamines: An Investigation of the Chemical, Physical, and Biological Properties of Several Novel 5:5 Fused Analogs of the Purine Ring System

  摘要：

  A series of imidazo[4,5-d]isothiazoles have been prepared from isothiazole precursors via a strategy employing ring annulation of the appropriate isothiazole diamine. In this manner, several 4,5-diaminoisothiazoles were converted into the corresponding 5-(alkylthio)imidazo[4,5-d]isothiazoles via a two-step, one-pot procedure in good yield. This methodology proved quite general and allows for the introduction of various substituents onto the 3-, 5-, and 6-positions of this ring system. Reaction with Raney nickel destroyed the ring system, presumably through removal of the sulfur at the 1-position, and the 5-mercapto substituent could not be removed selectively. Ring annulation with diethoxymethyl acetate provided the 5-unsubstituted imidazo[4,5-d]isothiazoles but was less general, and only the 3-methyl derivatives could be prepared. Imidazo[4,5-d]isothiazoles bearing no substituents on nitrogen readily underwent alkylation to afford mixtures of the N-4- and N-6-substituted compounds. The chemical and physical properties of these novel heterocycles were studied in detail, and the structure of 3-methyl-5-methanesulfonyl-6-(phenylmethyl)imidazo[4,5-d] isothiazole was verified by single crystal X-ray diffraction studies.

  DOI：

  10.1021/jo00125a016

文献信息

• Diazepine antiallergy agents
  申请人：Pfizer Inc.

  公开号：US05008263A1

  公开（公告）日：1991-04-16

  Platelet activating factor antagonists of formula (I), (II) or (III): ##STR1## where A is optionally substituted benzene, pyridine, naphthalene, quinoline, thiophene, benzothiophene, pyrazole or isothiazole, X is O, S or NH Y is 1,4 phenylene or a group of formula ##STR2## R.sup.1 is H or optionally substituted C.sub.1 -C.sub.4 alkyl, R.sup.2 and R.sup.3 are H or C.sub.1 -C.sub.4 alkyl, B is an optionally fused 5- or 6-membered ring containing nitrogen atoms, Het is an optionally substituted 5-membered heterocyclic ring containing nitrogen or a pyridine ring, the ring optionally being fused to benzene or nitrogen-containing heterocyclic ring.

  公式（I）、（II）或（III）的血小板活化因子拮抗剂：##STR1##其中A是可选择取代的苯、吡啶、萘、喹啉、噻吩、苯并噻吩、吡唑或异噻唑，X是O、S或NH，Y是1,4-苯撑基或公式##STR2##的基团，R.sup.1是H或可选择取代的C.sub.1-C.sub.4烷基，R.sup.2和R.sup.3是H或C.sub.1-C.sub.4烷基，B是可选择融合的含氮的5-或6-成员环，Het是可选择取代的含氮的5-成员杂环环或吡啶环，该环可选择与苯或含氮的杂环环融合。