Reactions of 1, 2, 5??thiadiazole 1, 1??dioxide derivatives with nitrogen nucleophiles. Part IV. Addition of α??diamines

…, EJ Vasini, OE Piro, EE Castellano

Index: Mirifico, Maria Virginia; Caram, Jose Alberto; Vasini, Enrique Julio; Piro, Osear Enrique; Castellano, Eduardo E. Journal of Physical Organic Chemistry, 2009 , vol. 22, # 2 p. 163 - 169

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Citation Number: 7

Abstract

Abstract α-diamines, such as ethylendiamine and o-phenylendiamine, add to 3, 4-aryl- disubstituted 1, 2, 5-thiadiazole 1, 1-dioxides to give dihydropyrazines or quinoxalines, respectively and sulfamide. The new compound acenaphtho [5, 6-b]-2, 3-dihydropyrazine was synthesized and characterized. The addition of ethylendiamine to 3, 4-diphenyl-1, 2, 5- thiadiazoline 1, 1-dioxide gives 3, 4-disubstituted thiadiazolidine 1, 1-dioxide, ...