摘要:
Pesticidal O-halogenocyclobutyl S-alkyl (di) thiophosph(on)ates of the formula ##STR1## in which x represents oxygen or sulphur,p represents zero, one or two,m represents zero, one or two,n represents 2, 3 or 4R.sup.1 represents alkyl, alkoxy which is optionally interrupted by oxygen or sulphur and can be substituted by halogen, or alkenyloxy, alkinyloxy, heterocyclyl-alkoxy or cycloalkoxy which is optionally substituted by alkyl and/or halogen,R.sup.2 represents alkyl which is optionally interrupted by oxygen or sulphur and can be substituted by halogen, or alkenyl, alkinyl or heterocyclyl-alkyl andR.sup.3 represents hydrogen or alkyl.
摘要:
The invention relates to new O-halogenocyclobutyl S-alkyl (di)thiophosphoric acid ester-amides of the general formula (I) ##STR1## in which A represents fluorine or chlorine,B represents hydrogen or alkyl,X represents oxygen or sulphur,R.sup.1 represents hydrogen, alkyl, --COH (formyl) or --CO-alkyl (acyl) which is optionally substituted by halogen,R.sup.2 represents hydrogen or alkyl, andR.sup.3 represents alkyl or alkoxyalkyl,which can be used as agents for combating pests.
摘要:
Hexafluoropropanes of the formula CF.sub.3 -CHX-CF.sub.3 where X is hydrogen or chlorine are prepared by reacting hexachloropropene with hydrogen fluoride in the gas phase in the presence of a catalyst.
摘要:
A process for the preparation of partially fluorinated alcohols starting from halogen-containing alkenes, and 2,2,3,3,4,4-hexafluorocyclopentanol as a new partially fluorinated alcohol.
摘要:
Difluoropropionic acid and derivatives thereof are prepared by bringing elemental fluorine in the presence of a solvent into an addition reaction with appropriate acrylic acids or derivatives thereof. In this way, it is also possible to obtain novel fluorinated esters of 2,3-difluoropropionic acid.
摘要:
1,1,1,4,4,4-hexafluoro-chlorobutenes are obtained by pyrolysis of 1,1,1-trifluoro-2,2-dichloroethane. The hexafluoro-chlorobutenes obtained in this way can be converted into hexafluorobutane, a CFC substitute, by hydrogenation.
摘要:
Process for the preparation of .beta.-fluoroalcohols of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 represent straight-chain or branched alkyl andR.sup.3 and R.sup.4 represent hydrogen or alkyl,in which epoxides of the formula (II) ##STR2## are reacted with sodium hydrogen fluoride or potassium hydrogen fluoride under pressure in the presence of diluents.
摘要:
1,1,1,2,4,4,4-Heptafluoro-2-butene and 2-chloro-1,1,1,4,4,4-hexafluoro-2-butene 1,V5VjV9are prepared simultaneously by reacting hexachlorobutadiene with hydrogen fluoride with the addition of catalytic amounts of titanium halide, antimony trihalide and/or antimony pentahalide.
摘要:
Fungicidal substituted 2-phenyl-2,2-difluoroethylthiolcarbonates of the formula ##STR1## in which R.sup.1 represents hydrogen, alkoxycarbonyl, alkoxyalkoxycarbonyl, alkylthioalkoxycarbonyl, halogenoalkoxycarbonyl, cyanoalkoxycarbonyl, alkenoxycarbonyl, alkynoxycarbonyl and cycloalkyloxycarbonyl, or represents cycloalkylalkoxycarbonyl,R.sup.2 represents hydrogen or alkyl, or represents phenyl, orR.sup.1 and R.sup.2 together represent the butadiene-1,4-diyl radical,R.sup.3 represents alkoxy, alkoxyalkoxy, alkylthioalkoxy, fluoroalkoxy, cyanoalkoxy, alkenoxy, alkynoxy, cycloalkyloxy and cycloalkylalkoxy, or represents the group ##STR2## in which R.sup.4 represents alkyl, alkoxyalkyl, alkylthioalkyl, cyanoalkyl, fluoroalkyl, alkenyl, alkinyl or cycloalkyl,R.sup.5 represents hydrogen, alkyl, alkoxyalkyl, alkylthioalkyl, fluoroalkyl, cyanoalkyl, alkenyl, alkinyl or cycloalkyl, orR.sup.4 and R.sup.5 together with the nitrogen atom at which they are located represent an unsubstituted or substituted heterocyclic ring which can be substituted in the alkylene chain by further hetero atoms,R.sup.6 represents hydrogen, methyl or chlorine, andQ represents sulphur or --CH.dbd.CH--.
摘要:
2,3,4,5-tetrafluorobenzene derivatives can be obtained in a particularly advantageous manner by reacting the corresponding chlorobenzene or (chloro, fluoro)-benzene derivatives with a fluorinating agent in the presence of a solvent and a catalyst at elevated temperature, which comprises carrying out the reaction initially under temperature and pressure conditions such that the respective 2,3,4,5-tetrafluoro-benzene derivative continuously distills off through a column, and subsequently setting temperature and pressure conditions such that residual fractions of the 2,3,4,5-tetrafluorobenzene derivative distill off with the corresponding 2,3,4-trifluoro-5-chloro compound.