4-amino-3-methyl-5-(N-methylamino)isothiazole | 132026-88-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 4-amino-3-methyl-5-(N-methylamino)isothiazole
• 英文别名: 4-amino-3-methyl-5-methylaminoisothiazole；5-N,3-dimethyl-1,2-thiazole-4,5-diamine
• CAS: 132026-88-1
• 化学式: C₅H₉N₃S
• mdl: MFCD19207339
• 分子量: 143.213
• InChiKey: OIJGPZRBWYQKSF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  9
• 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：
  79.2
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  4-amino-3-methyl-5-(N-methylamino)isothiazole 在 sodium hydroxide 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 1.5h， 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-methyl-5-(N-methylamino)-4-nitroisothiazole 以98%的产率得到4-amino-3-methyl-5-(N-methylamino)isothiazole
  参考文献：
  名称：

  Diazepine antiallergy agents

  摘要：

  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。

  公开号：

  US05008263A1