摘要:
Herbicidally active novel substituted phenylsulfonyl guanidines of the formula ##STR1## in which R.sup.1 is a phenyl or phenoxy group, each ofR.sup.2 and R.sup.3 is a lower alkyl or lower alkoxy group, andR.sup.4 is a hydrogen atom, a lower alkyl group or a lower alkoxy group,and novel intermediates therefor.
摘要:
Substituted phenylsulfonylurea derivatives of the general formula ##STR1## wherein X represents an oxygen atom or a direct bond, Y and Z each represents a halogen atom, a lower alkyl group, a lower alkoxy group or a nitro group, R represents a group: ##STR2## wherein R.sup.1 and R.sup.2 each represents a lower alkyl group or a lower alkoxy group, m and n each represents 0, 1 or 2 with the proviso that m and n do not represent 0 at the same time, are novel and find use as herbicides. Corresponding substituted benzenesulfonyl isocyanates are novel intermediate compounds for use in preparing compounds of formula (I).
摘要:
A process for preparing an alkylsulfinyl-substituted phenylphosphoric acid ester of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is alkyl, haloalkyl, alkenyl or optionally substituted aryl,R.sup.3 is alkyl,R.sup.4 is hydrogen, halogen, alkyl, alkoxy, nitro, cyano, alkoxycarbonyl group, phenyl or phenoxy, andX and Y each independently is oxygen or sulfur,which comprises reacting hydrogen peroxide with an alkylmercapto-substituted phenylphosphoric acid ester of the formula ##STR2## in an aprotic solvent under sulfuric acid-induced acidic conditions in the presence of an organic carboxylic acid. The product is obtained in higher purity and yield.