Heterocyclization of amino alcohols into saturated cyclic quaternary ammonium salts

Cyclodehydration of available N-alkylethanolamines with aldehydes and simultaneous or subsequent quaternization afford functionalized quaternary ammonium salts of N-nitroimidazolidine, oxazolidine and annulated bismorpholine type. Further replacement of their anions with residues of explosive acids provides a series of energyintensive quaternary salts with a rich hydrogen content possessing satisfactory energy characteristics and sufficiently high thermal stability.