The chlorination of N-alkoxy-N-alkylureas (1) by the action of t-BuOCl proceeds regiospecifically to give stable N-chloro-N-alkoxy-N'-alkylureas (2). The alcoholysis of 2 leads to N,N-dialkoxy-N'-alkylureas (3). The alkaline hydrolysis of 3 is a new, convenient method for the preparation of dialkoxyamines.
Compounds of the formula ##STR1## wherein R, R.sup.1 and R.sup.2 are independently hydrogen; alkoxy of 1 to 6 carbon atoms; aliphatic or cycloaliphatic hydrocarbyl of 1 to 10 carbon atoms optionally substituted wih halogen atoms; carbocyclic aryl of 6 to 15 carbon atoms optionally substituted with halogen atoms, nitro groups, alkyl groups, alkoxy groups or trifluoromethyl; or a heterocyclic group of 1 hetero oxygen, sulfur or nitrogen atoms and 4 to 5 annular carbon atoms and a total of 4 to 8 carbon atoms, find use as herbicides.
A fungicidal composition comprising a mixture of components (A) and (B), wherein components (A) and (B) are as defined in claim 1, and use of the compositions in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
作者:V. F. Rudchenko、S. M. Ignatov、R. G. Kostyanovskii
DOI:10.1007/bf00863833
日期:1992.10
The chlorination of N-alkoxy-N-alkylureas (1) by the action of t-BuOCl proceeds regiospecifically to give stable N-chloro-N-alkoxy-N'-alkylureas (2). The alcoholysis of 2 leads to N,N-dialkoxy-N'-alkylureas (3). The alkaline hydrolysis of 3 is a new, convenient method for the preparation of dialkoxyamines.