Preparation of bisamides

Claim 1

A PROCESS FOR PREPARING BISAMIDES OF THE STRUCTURE R1NHCOCNH2NCONHR1 WHICH COMPRISES MIXING ABOUT ONE MOLAR PROPORTION OF A COMPOUND OF THE STRUCTURE Z-CNH2N-CN, ABOUT TWO MOLAR PROPORTIONS OF A MONOAMINE R1NH2, AND AT LAST A STOICHIOMETRIC PROPORTION OF WATER, HEATING THE RESULTING MIXTURE IN ABSENCE OF ADDED CATALYST IN LIQUID PHASE AT A REACTING TEMPERATURE BETWEEN 25* AND 150* C., REMOVING WATER FROM THE REACTION MIXTURE, AND SEPARATING THE BISAMIDE, R1 BEING A MEMBER OF THE CLASS CONSISTING OF ALKYL GROUPD, CYCLOALKYL GROUPS, BENZYL GROUPS, ALKOXYALKYL GROUPS AND PHENOXYALKYL GROUPS WHICH HAVE TWO TO THREE CARBON ATOMS BETWEEN THE OXYGEN THEREOF AND THE AMINO NITROGEN, DI-N-ALKYLAMINOALKYL GROUPS IN WHICH THE DI-N-ALKYL GROUPS CONTAIN NOT OVER FOUR CARBON ATOMS EACH AND THE AMINOALKYL PORTION CONTAINS TWO TO THREE CARBON ATOMS, AND MORPHOLINOALKYL, PYRROLIDINOALKYL, AND PIPERIDINOALKYL GROUPS IN WHICH THE ALKYL PORTION CONTAINS TWO TO THREE CARBON ATOMS, N BEING A WHOLE NUMBER OF NOT OVER THREE, AND Z BEING A MEMBER OF THE CLASS CONSISTING OF -CN, -CONH2, AND -COOR, WHERE R IS LOWER ALKYL.