1-HYDROCARBYLDITHIO-3-ARYL UREAS

摘要

1361213 Substituted ureas CHEVRON RESEARCH CO 9 Nov 1971 [9 Nov 1970] 52082/71 Heading C2C Compounds of Formula I (A) where R is phenyl optionally substituted with F, Cl, Br, NO 2 , C 1-4 alkyl or C 1-4 alkoxy; R1, R2 are H or C 1-4 alkyl; and R3 is C 1-14 hydrocarbyl optionally substituted with F, Cl, Br, NO 2 , or C 1-4 alkoxy, may be prepared by reacting compounds of Formula II (B) with HSR3 in an inert solvent, e.g. benzene, where R4, R5 are alkyl, haloalkyl, cycloalkyl or halocycloalkyl and R5 may also be H, or R4 and R5 together form C 3-5 alkylene. R3 may be alkyl, cycloalkyl, aryl, alkaryl or aralkyl. Compounds II may be prepared by reacting a urea (R-NR1-CO-NH-R2) with an acylamidosulphenyl chloride (ClS-NR4-CO-R5) preferably in methylene chloride with pyridine as acid acceptor. Compounds I are herbicides.