摘要:
A process for the preparation of a phenylglyocylic acid ester of the formula ##STR1## wherein R.sup.1 represents alkyl,X represents halogen, alkyl, halogenoalkyl, alkoxy or nitro, andn represents 0, 1, 2, or 3by contacting a benzoyl cyanide of the formula ##STR2## wherein X and n have the meanings stated above, in a sulphuric acid/water system in the presence of chloride ions at a temperature between 0.degree. and 70.degree. C. to form phenylglyoxylic acid amide and reacting the phenylglyoxylic acid amide without isolation with an alcohol of the formula R.sup.1 -OH, wherein R.sup.1 has the meaning stated above, optionally in the presence of a diluent, at a temperature between 40.degree. and 100.degree. C.
摘要:
Novel N-azolylalkyl-aniline compound of the formula ##STR1## in which A is oxygen, sulfur or the radical >NR.sup.2,R is hydrogen or alkyl,R.sup.1 is hydrogen, alkyl, haloalkyl, alkenyl, alkynyl, cycloalkyl, halogen, optionally substituted aryl, optionally substituted aralkyl or the radicals --OR.sup.3, --SR.sup.3 or --NH.sup.2 R.sup.3,R.sup.2 is hydrogen, alkyl or optionally substituted aryl,R.sup.3 is hydrogen, alkyl, haloalkyl, alkenyl, alkynyl, cycloalkyl or optionally substituted aralkyl,X is alkyl,Y is alkyl or halogen andn is 0, 1 or 2.
摘要:
Novel glyoxylic acid hydrazide-2-acylhydrazones of the formula: ##STR1## in which R.sup.1 is hydrogen or alkyl, andR.sup.2 is alkyl or optionally substituted phenylAnd are prepared by reacting the corresponding glyoxylic acid ester 2-acylhydrazone with hydrazine hydrate. The compounds (I) are useful in preparing herbicidally active 4-amino-1,2,4-triazine-5-one compounds.
摘要:
.alpha.-Oxothiodimethylamide compounds such as tert.-butyl-glyoxyl acid thiodimethylamide are prepared by reacting an .alpha.-chloroketone of the formula ##STR1## in which X is hydrogen or chlorine andR.sup.1 is alkyl or arylWith sulfur and dimethylamine in water at a temperature between 50.degree. and 90.degree. to produce the corresponding .alpha.-oxothiodimethylamide of the formula ##STR2## wherein R.sup.1 is identified above.
摘要:
Diphenyl-triazolyl-methanes of the formula ##STR1## in which R is alkyl, alkylcarbonyl or optionally substituted phenylcarbonyl,X and Y each independently is halogen, alkyl, halogenoalkyl, alkoxy, alkylthio, optionally substituted phenyl or phenoxy, nitro or cyano, andM and n each independently is an integer from 0 to 5, and their physiologically tolerated salts are used to combat fungi and nematodes.
摘要:
Novel 3,4-dihydro-1,2,4-triazine compounds of the formula ##SPC1##In whichR.sup.1 is alkyl or cycloalkyl;R.sup.2 is methyl, amino, alkylideneamino, methylamino, .beta.-hydroxyethylamino, 2-furylmethylamino, aralkylamino or substituted aralkylamino; and R.sup.3 is alkyl, aryl or substituted aryl;Are prepared by reacting the corresponding 1,2,4-triazin-5-one with sodium borohydride in the presence of a polar solvent at a temperature between -10.degree. and +25.degree.C. The novel compounds are outstandingly effective as herbicides and display particularly selective action.
摘要:
N-(1,2,4-Triazin-5-on-4-yl)-glycine compounds of the formula ##STR1## in which R.sup.1 is alkyl, alkoxy, alkylthio or alkylamino,R.sup.2 is alkyl, cycloalkyl, phenyl or substituted phenyl,R.sup.3 is hydrogen, alkyl, alkenyl or alkynyl andR.sup.4 is hydroxyl, alkoxy, alkythio, amino, alkylamino or dialkylamino,Possess outstanding selective herbicidal properties.
摘要:
Plant growth is regulated, e.g., inhibited or stimulated, by application to the plants or their habitat of effective amounts of at least one 5-azolyl-[a,d]-dibenzocycloheptene compound of the formula ##STR1## WHEREIN X is a --CH.dbd.CH-- or --CH.sub.2 --CH.sub.2 -- group,R is alkyl, alkoxycarbonyl or optionally substituted aryl, andAz is an azole radical of the formula ##STR2##
摘要:
Azomethine compounds of 4-amino-5-H-1,2,4-triazin-5-ones of the formula ##SPC1##Wherein:R.sup.1 is alkyl, cycloalkyl or phenyl;R.sup.2 is hydrogen or alkyl;R.sup.3 is alkyl, alkoxy, cycloalkyl, cycloalkenyl, aralkyl, aryl or heteroaryl, or dialkylamino;R.sup.2 and R.sup.3 jointly can be an alkylene bridge, optionally interrupted by a hetero atom; andR.sup.4 is alkyl or optionally substituted phenyl,Are markedly effective herbicides, particularly selective herbicides for weeds growing in oats, wheat, cotton, maize, tomatoe, potatoe, soybean, and especially in beet cultivations.
摘要:
Novel glyoxylic acid hydrazide-2-acylhydrazones of the formula: ##EQU1## in which R.sup.1 is hydrogen or alkyl, andR.sup.2 is alkyl or optionally substituted phenyl and are prepared by reacting the corresponding glyoxylic acid ester 2-acylhydrazone with hydrazine hydrate. The compounds (I) are useful in preparing herbicidally active 4-amino-1,2,4-triazin-5-one compounds.