AMINOAMIDINES .7. 2-(ARYLAMINOMETHYL)IMIDAZOLINES AND THEIR ACYLATED DERIVATIVES

2-(Arylaminomethyl)imidazolines were prepared by the reaction of aryla minoacetonitriles with ethylenediamine in the presence of catalytic am ounts of P2S5 These imidazolines react with aroyl chlorides (1 : 2 rat io) to give diacylation products. In the case of a 1 : 1 mole ratio as well as on treatment with Ac2O in Et(3)N, monoacylation at the imidaz oline ring predominantly occurs. Isomeric 2-(N-benzoyl-N-arylaminometh yl)imidazolines were obtained from N-benzoyl-N-arylaminoacetonitriles by the Pinner method. 2-(N-Aroyl-N-arylaminomethyl)benzimidazoles and -benzoxazoles were synthesized in a similar way.