Polycyclic<i>N</i>-Heterocyclic Compounds, Part 72: Reaction of<i>N</i>-([1]Benzofuro (or Benzothieno)[3,2-<i>d</i>]pyrimidin-4-yl)formamidine and<i>N</i>-(Pyrido[2,3-<i>d</i>]pyrimidin-4-yl)formamidine Derivatives with Hydroxylamine Hydrochloride
作者:Kensuke Okuda、Kiyoko Tsuchie、Takashi Hirota
DOI:10.1002/jhet.850
日期:2012.7
The reactions of N‐([1]benzofuro[3,2‐d]pyrimidin‐4‐yl)formamidines with hydroxylamine hydrochloride gave rearranged cyclization products via ring cleavage of the pyrimidine component accompanied by a ring closure of the 1,2,4‐oxadiazole to give N‐[2‐([1,2,4]oxadiazol‐5‐yl)[1]benzofuran‐3‐yl)formamide oximes. N‐([1]Benzothieno[3,2‐d]pyrimidin‐4‐yl)formamidines and N‐(pyrido[2,3‐d]pyrimidin‐4‐yl)formamidines
的反应ñ - ([1]苯并呋喃并[3,2- d ]嘧啶-4-基)与盐酸羟胺甲脒都给经由伴随1,2,4的环闭合嘧啶部件的环切割重排的环化产物恶二唑生成N- [2-([[1,2,4]恶二唑-5-基] [1]苯并呋喃-3-基)甲酰胺肟。ñ - ([1]苯并噻吩并[3,2- d ]嘧啶-4-基)甲脒与ñ - (吡啶并[2,3- d ]嘧啶-4-基)与盐酸羟胺甲脒,得到类似的结果。