This invention involves a new class of compounds, certain geminal-dinitro-substituted heterocycles, including geminal-bis(difluoramino)-substituted heterocyclic nitramines and the production thereof. More specifically, this invention involves the production of 3,3-bis(difluoramino)octahydro-1,5,7,7-tetranitro-1,5-diazocine (TNFX), which may be formulated into explosives and propellant oxidizers. The method of making a 3,3-bis(difluoramino)octahydro-1,5,7,7-tetranitro-1,5-diazocine comprises reacting a hexahydro-7,7-dinitro-1,5-bis(nitrobenzenesulfonyl)-1,5-diazocin-3(2 H)-one with a difluoramine source to produce a 3,3-bis(difluoramino)octahydro-7,7-dinitro-1,5-bis(nitrobenzenesulfonyl)-1,5-diazocine and reacting said 3,3-bis(difluoramino)octahydro-7,7-dinitro-1,5-bis(nitrobenzenesulfonyl)-1,5-diazocine with a highly reactive nitrating reagent in the presence of a strong Lewis acid, such as antimony pentafluoride, boron triflate or boron fluorosulfonate.
这项发明涉及一种新的化合物类别,即某些双硝基取代的
杂环化合物,包括双(二
氟氨基)取代的杂环
硝胺和其制备方法。更具体地说,这项发明涉及制备3,3-双(二
氟氨基)八氢-1,5,7,7-四硝基-1,5-二氮杂环(TNFX),该化合物可用于制备炸药和推进剂氧化剂。制备3,3-双(二
氟氨基)八氢-1,5,7,7-四硝基-1,5-二氮杂环的方法包括将六氢-7,7-二硝基-1,5-双(
硝基苯磺酰基)-1,5-二氮杂环-3(2H)-酮与二
氟氨基源反应,制得3,3-双(二
氟氨基)八氢-7,7-二硝基-1,5-双(
硝基苯磺酰基)-1,5-二氮杂环,然后在强
路易斯酸(如
五氟化锑、
三氟化硼或
氟硼磺酸硼)存在下,将3,3-双(二
氟氨基)八氢-7,7-二硝基-1,5-双(
硝基苯磺酰基)-1,5-二氮杂环与高反应性硝化试剂反应。