In order to search for new types of herbicides,a series of ethyl 4 hetercyclic(aryl)amino sulfonyl phenoxy acetates(propionates) were synthesized by the condensation reactions of 4 ethoxycarbonylmethylenoxy(ethoxy)phenyl sulfonyl chlorides and saturated heterocyclic(aryl)amines.Their structures were confirmed by 1H NMR,IR,MS and elemental analysis.The results of biloassays showed that some of the new compounds have good herbicidal activities.
Fourteen unreported 2-amino-4H-imidazol-4-ones 4 were rapidly synthesized by a new parallel synthetic method, which included aza-Wittig reaction of iminophosphorane 1 with phenyl isocynate to give carbodiimide 2 and subsequent reaction of 2 with various amines in a parallel fashion. The structure of compound 4 was confirmed by means of 1H NMR, MS and IR. The configuration of compound 4b was determined as in Z form since the coupling constant 3J( 13C, 1H) between the carbonyl carbon and the olefinic hydrogen was 5.6 Hz.
