Reaction of nitrosolic acid salts with dinitrogen tetraoxide

Abstract

It is known that the reactions of salts of various α,α dinitromethyl compounds with N 2 O 4 in inert organic solvents afford the corresponding trinitromethyl deriva tives and/or nitrolic acids, furoxans, and nitriles. 1-13 The first step of this process is the nitrosation of the dinitro methyl anion leading to the α,α dinitro α nitrosomethyl intermediate, 2,5,6,8,12 which is transformed into this or another product depending on the reaction conditions. Literature data on the reaction of salts of α,α dinitroso methyl compounds (nitrosolic acid salts) with N 2 O 4 are missing, and only few reactions of nitrosolic acids are known.We found that the treatment of a suspension of alkylnitrosolic acid salt 1a,b with one equivalent of N 2 O 4 in acetonitrile or diethyl ether at -10 °С resulted in the smooth formation of the corresponding nitrolic acid 2a,b, which can be isolated in 80-85% yield (Scheme 1). Scheme 1 R = Me (a), Et (b). i. 1 equiv.; ii. > 2 equiv.

Synthesis, Disproportionation and Hydrolysis Reactions of 3-Amino-4-hydroxyaminoximinofurazan

“…Chart 1, 熔点为 48 ℃, 密度为 1.97 g/cm 3 , 氧化系数 k o 为 100%, 标准生成焓 ΔΗ f 为-146.3 kJ/mol, 分解点＞ 270 ℃, 具有高能量密度、低感度及良好的热稳定性 [8] . FOF- 13 [9,10] . [15] , II 中羟胺基和 I 偶合失水转化成 III; III 通过电荷 转移互变为 IV, 由于 IV 中氮氮键易断裂, 水解成原料 DAOF(自制) [12] , 浓盐酸(36%～38%)、亚硝酸钠、 盐酸羟胺、甲醇钠、乙醇、氢氧化钾等均为分析纯.…”