Synthesis and thermal transformations of 5-nitropyrimidin-4-yl dialkyldithiocarbamates
作者:O. B. Ryabova、V. A. Makarov、V. V. Chernyshev、V. G. Granik
DOI:10.1023/b:rucb.0000037858.17011.fb
日期:2004.4
heating, 5-nitropyrimidin-4-yl dialkyldithiocarbamates undergo two types of transformations. One type of these transformations involves intramolecular ipso-substitution of the nitro group to form bis(4-dialkylcarbamoylthiopyrimidin-5-yl) disulfides, whereas another type of transformations involves elimination of carbon disulfide to give 4,6-diamino-5-nitropyrimidine derivatives. The reaction pathway is controlled
加热时,5-硝基嘧啶-4-基二烷基二硫代氨基甲酸酯经历两种类型的转化。这些转化的一种类型涉及硝基的分子内同位取代以形成双(4-二烷基氨基甲酰基硫代嘧啶-5-基)二硫化物,而另一种类型的转化涉及消除二硫化碳以得到 4,6-二氨基-5-硝基嘧啶衍生物. 反应途径受嘧啶环 6 位取代基的空间效应控制。