81965-08-4Relevant articles and documents
An efficient microwave-assisted synthesis of dihydropyrazinones and bis-benzoylketones
Hossain, Mamun M.,Islam, Rabiul M.,Saha, Sukanta K.,Islam, Mohammad K.
scheme or table, p. 1155 - 1157 (2010/04/25)
Microwave-assisted modified Sandmeyer reactions of oximinoacetanilides, themselves obtained from substituted primary aromatic amines, in concentrated H2SO4 give isatins. N-Acetylisatins undergo ring cleavage and subsequent ring closing with alkanediamines in the presence of ethanol under MW irradiation to give the corresponding dihydropyrazinones in excellent yields. Modification of the reaction conditions affords bis-benzoylketones under MW irradiation.
Reaction of N-Acylisatins with Diamines
Joshi, B. S.,Likhate, M. A.,Viswanathan, N.
, p. 114 - 116 (2007/10/02)
The reaction of N-acylisatins with aromatic and heterocyclic 1,2-diamines results in opening of the N-C2 bond and leads to the 2-o-acetamidophenylquinoxaline derivatives (6) and (7).With ethylenediamine and 1,3-diaminopropane, compounds (9a) and (9b) resp
