Synthesis of 1-amino-[1,2,3]oxadiazolo[4,3-α]phthalazin-4-ium chloride and substituted dihydro derivatives. New annelated sydnonimines
作者:J. M. Ruxer、J. Mauger、D. Bénard、C. Lachoux
DOI:10.1002/jhet.5570320245
日期:1995.3
cyclisation procedure of the carbonyl chloride Reissert adduct 14 of phthalazine. This synthetic method could be extended to the preparation of dihydroderivatives 7a to 7f and represents a new access to annelated sydnonimines. The para anisoyl and ethoxycarbonyl derivatives of these sydnonimines were also prepared with analogy to molsidomine 1 or pirsidomine 2.