Cyanide-Free Synthesis of Air Stable N-Substituted Li and K Cyanamide Salts from Tetrazoles. Applications toward the Synthesis of Primary and Secondary Cyanamides as Precursors to Amidines

Combination Energetic Materials Consisting of Strained Rings Combined with High Heat of Formation Tetrazoles

The reaction of cyanogen azide with strained-ring containing primary and secondary amines led to the isolation of energetic molecules deriving their energy content from both strained rings as well as aminotetrazoles. Azo-coupling of these materials afforded novel high-nitrogen energetic materials of very high sensitivity. All compounds were chemically characterized by IR, NMR, single-crystal X-ray crystallography, and high-resolution mass spectrometry. Their impact and friction sensitivities were experimentally determined, and their energetic performances were calculated.

Green and efficient synthesis of dibenzyl cyanamides and ureas with cyanamide as a block

A method for the two-step synthesis of dibenzyl cyanamide and dibenzyl urea via cyanamide is presented. This approach is both efficient and environmentally friendly. Various N,N-dibenzyl ureas could be obtained by reactions of N,N-dibenzyl cyanamides and N,N-dibenzyl cyanamides as intermediates formed from cyanamide. In the absence of metal, ligand and hydrogen peroxide as the oxidant, products with moderate yields have been obtained under mild conditions. Key features include the use of widely available and easily handled cyanamide sources as starting materials.

N-Cyanation of Primary and Secondary Amines with Cyanobenzio-doxolone (CBX) Reagent

An efficient electrophilic N-cyanation of amines with a stable and less-toxic cyanobenziodoxole reagent towards the synthesis of cyanamides is disclosed. This synthetically practicable strategy allows the construction of a wide variety of cyanamides under very mild and simple conditions with a broad functional group compatibility, and showcases a huge potential in late-stage modification of complex molecules.