Competitive N-or O-alkylation of hydroxamic acids (HA) mainly results in the formation of O-alkyl hydroxamates. I For example, the cyclic products of reaction of c~-amino HA with aldehydes have the structure of O-alkylated derivatives I. z However, the interaction of 3 -a m i n o p r o p i o -H A with aliphatic aldehydes and ketones affords N-alkyl hydroxamates 2. 3

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A general method for the preparation of nitrates by treatment of alcohols with nitryl fluoride (FNO2) in MeCN in the presence of KF has been developed.

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Triazine derivatives R 0655Condensed Tetrazolo-1,3,5-triazines. Part 1. Synthesis of 5-Polynitromethyltetrazolo[1,5-a]-1,3,5-triazin-7-one Salts. -The reaction of trinitromethyl-substituted triazines (I) and (III) with NaN3 proceeds in a different way. -(FEDOROV, B. S.; FADEEV, M. A.; GIDASPOV, A. A.; KOSAREVA, E. A.; BAKHAREV, V. V.; Chem. Heterocycl.

Investigations of the synthesis and chemical properties of nitro-and polynitromethyl derivatives of 1,3,5-triazine have been actively carried out in recent years [1][2][3][4][5][6][7][8][9]. Our work is also based on a study of the reactivity of trinitromethyl derivatives of 1,3,5-triazine and concerns the potential synthesis of previously unreported polynitromethyltetrazolo-1,3,5-triazines in which a tetrazole ring is annelated to the 1,3,5-triazine ring.The general method for preparing condensed tetrazoles is based on the annelation of tetrazole to the triazine ring via an azido-tetrazole tautomeric conversion of the azidoazomethine fragment in the molecule [10,11]. For azido-1,3,5-triazines which contain electron-donor substitutents this question has been considered in [12,13].NaN 3 3a, 4a R 1 = R 2 = Me; 3b, 4b R 1 = R 2 = Et __________________________________________________________________________________________

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