申请人:——
公开号:US20020007063A1
公开(公告)日:2002-01-17
Calculated performance improvements are expected from a particularly new class of compounds, geminal-bis(difluoramino)-substituted heterocyclic nitramines, when formulated into explosives and propellants. This invention involves novel and nonintuitive methods for the preparation of certain derivatives of 2,2-bis(difluoramino)-N-nitro-1,3-propanediamine which are suitable precursors leading to 5,5-bis(difluoramino)hexahydro-1,3-dinitropyrimidine (RNFX). The invention also involves novel and nonintuitive methods for the preparation of RNFX, a specific member of a general class of compounds with the substructure 2,2-bis(difluoramino)-N-nitro-1,3-propanediamine. RNFX is produced by the use of key intermediates, including tetrahydropyrimidin-5(4H)-ones, which allow formation of the target structural subcomponent, 2,2-bis(difluoramino)-N-nitro-1,3-propanediamine, and a more specific substructure of 2,2-bis(difluoramino)-N,N′-dinitro-1,3-propanediamine. In addition, this invention involves 5,5-bis(difluoramino)hexahydropyrimidine derivatives, related geminal-bis(difluoramino)alkylene derivatives, and novel precursors to these new derivatives, by the use of certain novel key intermediates.
预计从一种特别新的化合物类别——双(二
氟氨基)取代的杂环
硝胺基化合物(geminal-bis(difluoramino)-substituted heterocyclic nitramines)中,当制成炸药和推进剂时,将获得计算性能改进。本发明涉及制备2,2-双(二
氟氨基)-N-硝基-
1,3-丙二胺的某些衍
生物的新颖和非直观方法,这些衍
生物是导致5,5-双(二
氟氨基)六氢-1,3-二
硝基嘧啶(RNFX)的合适前体。本发明还涉及制备RNFX的新颖和非直观方法,RNFX是具有亚结构2,2-双(二
氟氨基)-N-硝基-
1,3-丙二胺的化合物类别的特定成员。通过使用关键中间体,包括四氢
嘧啶-5(4H)-酮,可以形成目标结构亚组分2,2-双(二
氟氨基)-N-硝基-
1,3-丙二胺,以及更具体的亚结构2,2-双(二
氟氨基)-N,N'-二硝基-
1,3-丙二胺。此外,本发明涉及5,5-双(二
氟氨基)六氢
嘧啶衍
生物,相关的双(二
氟氨基)烷基衍
生物以及这些新衍
生物的新前体,通过使用某些新的关键中间体。