[EN] NOVEL METHOD FOR THE PREPARATION OF DERIVATIVES OF DIHYDROTETRAAZAPENTACENES, PRODUCTS SUCH AS OBTAINED, AND USES THEREOF<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE DIHYDRO-TÉTRAAZA-PENTACÈNES, LES PRODUITS AINSI OBTENUS, ET LEURS UTILISATIONS
申请人:UNIV AIX MARSEILLE II
公开号:WO2009083532A2
公开(公告)日:2009-07-09
The present invention relates to a method for the preparation of compounds having the following formula (I) in which: R1, R2, R3, and R4 represent, independently from each other, in particular H or an alkyl group having from 1 to 20 carbon atoms, said method comprising the reaction of a compound of formula (II) R1 and R2 being as defined above, with a compound having the following formula (III): R3 and R4 being as defined above, in the presence of a catalytic amount of an acid.