Patoran (Metobromuron) [3-p-Bromopheny1)-1-methoxy-l-methylurea] 
Photolysis of patoran was conducted with aqueous solutions exposed 
to sunlight for a 1/-day period in late summer and by using a low pressure 
2.5 watt mercury immersion lamp. Exposure of the aqueous solution to 
sunlight resulted in a mixture containing 80% unchanged patoran and 152 
3-(p-hydroxyphenyl)-l-methoxy-l-methylurea. The remaining material 
consisted of demethylated patoran, p-bromophenylurea and some unidentified 
materials. Some HBr was also probably formed (1634). 
to fH, 
Br N-C-N 
iT , 
Noon, 
Patoran 
3- (p-Hy droxypheny1)-1- 
methoxy-1-methylurea p-Bromophenylurea 
Chloroxuron (Tenoran) [N-(p-Chlorophenoxyphenyl)-N' ,N'-dimethylurea] 
Zea mays, Vicia faba, Phaseolus vulgaris, Galinsoga parviflora 
Polygonum convolvulus were exposed to labeled N'-(4-chlorophenoxy) -pheny1l- 
N,N-dimethylurea. After column and thin-layer chromatography, N'-(4- 
chlorophenoxy)-phenyl-N-methylurea and N'-(4-chlorophenoxy)-phenylurea 
were identified by infra red. Evolution of labeled CO, was observed, 
indicating metabolism to the p-chlorophenoxy-p'-aminobenzene. Using column 
chromatography, a compound was eluted on the position of N,N'-bis(4,4'chloro- 
phenoxy)urea (532). 
o€}-OLIO-OE- 

342 
