Abstract:
A compound of the formula ##STR1## is reacted with a phenol of the formula ##STR2## in the presence of an acid to produce a heterocyclic phenyl ether of the formula ##STR3## wherein each R is independently selected from halogen, trifluoromethyl, nitro, cyano, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms or alkylthio having 1 to 4 carbon atoms;A is oxygen, sulfur or N-alkyl having 1 to 4 carbon atoms; andn is a number from 0 to 3.
Abstract:
Optically active enantiomers of the formula I ##STR1## where R is a group of the formulae ##STR2## R.sub.1 and R.sub.2, among others, are halogen or CF.sub.3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
Abstract:
Compounds of formula ##STR1## wherein R is halogen, CF.sub.3, NO.sub.2, CN, (C.sub.1 -C.sub.4)alkyl or (C.sub.1 -C.sub.4)-alkoxy, n is zero or 1, X is O, S, NH, or N-(C.sub.1 -C.sub.4)alkyl, Y is O or S, R.sup.1 is H or (C.sub.1 -C.sub.4)alkyl and Z is, among others, a cyanalkyl, (subst.) carbalkoxyalkyl, (subst.) carbalkoxyphenyl, sulfoxyalkyl or oxime group, are selective herbicides active especially against weed grasses.
Abstract:
Compounds of the formula ##STR1## in which R denotes halogen, CF.sub.3, NO.sub.2 or CN, n denotes 0-2, X denotes O or S and Z denotes radicals of the formulae ##STR2## or --C.sub.p H.sub.2p --R.sub.3 (in which, inter alia, R.sub.3 can be a heterocyclic radical), are valuable herbicides, particularly against monocotyledonous weeds.
Abstract:
Opticalls active enantiomers of the formula I ##STR1## where R is a group of the formulae ##STR2## R.sub.1 and R.sub.2, among others, are halogen or CF.sub.3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
Abstract:
Optically active enantiomers of the formula I ##STR1## where R is a group of the formulae ##STR2## R.sub.1 and R.sub.2, among others, are halogen or CF.sub.3 and Z is a carboxyl, carboxylate, carboxylic acid ester, thioester, carbonamide, carboxylic acid anilide, carbohydrazide or thioamide group, are interesting herbicides the effect of which is considerably superior to that of the optically inactive racemates.
Abstract:
The compounds of formula I ##STR1## in which the substituents X, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6, are defined hereinbelow. The compounds have advantageous herbicidal properties and are useful, for example, for combating undesired plants.
Abstract:
Compounds of the formulaAr--O--A--Zin which Ar denotes an optionally substituted phenyl-A--CH.sub.2 -- or phenyl-A--CH(CH.sub.3)-- or naphthyl-A--CH.sub.2 -- or naphthal-A--CH(CH.sub.3)-- group and Z denotes, inter alia, a carboxyl, (thio)carboxylic ester or carboxamide group, a cyclic imino(thio)ether group or an open or cyclic acetal group, are effective antidotes, in particular for herbicides belonging to the group comprising phenoxyphenoxypropionic acid esters and hetero-aryloxyphenoxypropionic acid esters.
Abstract:
Compounds of the formula ##STR1## wherein R is halogen, CF.sub.3, NO.sub.2, CN, Alkyl or alkoxy, n is 0 to 3 X is O, S, NH or N-Alkyl, Y is O, S, SO, SO.sub.2, NH or N-Alkyl, R.sub.1 is H or alkyl and Z is carboxy or hydroxymethyl or functional derivatives of these groups, are valuable herbicides and growth regulators.
Abstract:
A process for the manufacture of 2,6-dichlorobenzoxazole and 2,6-dichlorobenzthiazole by chlorinating K.sup.+ or Na.sup.+ salts of 6-chloro-2-mercaptobenzoxazole or of 6-chloro-2-mercaptobenzthiazole in halogenated hydrocarbons as suspending agents.