摘要:
Provided herein are processes for the preparation of alkoxycarbonyl isothiocyanates from alkyl chloroformates and thiocyanates in toluene by controlling the amounts of water and catalyst.
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:
Provided herein are processes for the preparation of alkoxycarbonyl isothiocyanates from alkyl chloroformates and thiocyanates in toluene by controlling the amounts of water and catalyst.
摘要:
The invention relates to novel sulphonylamino(thio) carbonyl compounds of the formula (I), in which A represents a single bond, oxygen, sulphur or the group N—R, in which R represents hydrogen, alkyl, alkenyl, alkinyl or cycloalkyl, Q represents oxygen or sulphur, R1 represents hydrogen or formyl or represents in each case optionally substituted alkyl, alkenyl, alkinyl, alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, cycloalkyl, cycloalkylcarbonyl or cycloalkylsulphonyl, R2 represents cyano or halogen or represents in each case optionally substituted alkyl, alkenyl, alkinyl, alkoxy, alkenyloxy or alkinyloxy, and R3 represents in each case optionally substituted heterocyclyl having 5 ring members of which at least one is oxygen, sulphur or nitrogen and from one to three further ring members can be nitrogen, and salts of compounds of the formula (I), the previously known compounds 4,5-dimethoxy-2-(2,5-dimethoxy-phenylsulphonylaminocarbonyl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 4,5-diethoxy-2-(2,5-dimethoxy-phenylsulphonylaminocarbonyl)-2,4-dihydro-3H-1,2,4-triazol-3-one and N-(2,5-dimethoxy-phenylsulphonyl)-1,5-dimethyl-1H-pyrazole-3-carboxamide being excluded by disclaimer; and also to processes and novel intermediates for the preparation of the novel substances and to their use as herbicides.
摘要:
Alkoxy and aryloxy isothiocyanates are produced by the reaction of a haloformate and an alkali or alkaline earth metal thiocyanate in the presence of water and (i) a catalyst comprising a six membered mononuclear or ten membered fused polynuclear aromatic, heterocyclic compound having 1 or 2 nitrogen atoms as the only hetero atoms in the ring and (ii) a co-catalyst comprising an alkali metal or alkaline earth metal salt of an acid having a pKa of about 10.sup.-3 or below. The co-catalyst accelerates the reaction rate, increases product purity and reduces the adverse effects of impurities in certain grades of the thiocyanate reactants.
摘要:
3-Substituted 1-(2-halogenoalkoxy-benzenesulphonyl)-3-heteroaryl-(thio)urea herbicides of the formula ##STR1## in which (A)R is CF.sub.3,Q is O,R.sup.1 is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 -n, C.sub.3 H.sub.7 -i, CH.sub.2 --CH.dbd.CH.sub.2, CH.sub.2 --C.tbd.CH or CH.sub.2 --C.sub.6 H.sub.5,R.sup.2 is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5, SCH.sub.3, NH--CH.sub.3 or NH--C.sub.2 H.sub.5,X is N,Y is N andZ is C--CH.sub.3, C--C.sub.2 H.sub.5, C--OCH.sub.3 or C--OC.sub.2 H.sub.5 ; or(B)R is CF.sub.3,Q is O,R.sup.1 is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 -n, C.sub.3 H.sub.7 -i, CH.sub.2 --CH.dbd.CH.sub.2, CH.sub.2 --C.tbd.CH or CH.sub.2 --C.sub.6 H.sub.5,R.sup.2 is CH.sub.3, OCH.sub.3 or OC.sub.2 H.sub.5,X is N,Y is C--H andZ is C--C.sub.2 H.sub.5, C--OCH.sub.3 or C--OC.sub.2 H.sub.5 ; or(C)R is CH.sub.2 --CH.sub.2 Cl,Q is O,R.sup.1 is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 -n, C.sub.3 H.sub.7 -i, CH.sub.2 --CH.dbd.CH.sub.2, CH.sub.2 --C.tbd.CH or CH.sub.2 --C.sub.6 H.sub.5,R.sup.2 is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5, SCH.sub.3, NH--CH.sub.3 or NH--C.sub.2 H.sub.5,X is N,Y is N andZ is C--CH.sub.3, C--C.sub.2 H.sub.5, C--OCH.sub.3 or C--OC.sub.2 H.sub.5 ; or(D)R is CH.sub.2 --CH.sub.2 Cl,Q is O,R.sup.1 is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 -n, C.sub.3 H.sub.7 -i, CH.sub.2 --CH.dbd.CH.sub.2, CH.sub.2 --C.tbd.CH or CH.sub.2 --C.sub.6 H.sub.5,R.sup.2 is CH.sub.3, OCH.sub.3 or OC.sub.2 H.sub.5,X is N,Y is C--H andZ is C--CH.sub.3, C--C.sub.2 H.sub.5, C--OCH.sub.3 or C--OC.sub.2 H.sub.5 ; or(E)R is CHF.sub.2,Q is O,R.sup.1 is CH.sub.3,R.sup.2 is CH.sub.3,X is N,Y is N andZ is C--CH.sub.3,or a salt thereof with a metal or basic organic nitrogen compound.
摘要翻译:(A)R为CF 3,Q为O,R 1为CH 3,C 2 H 5,C 3 H 7 -n的3-取代的1-(2-卤代烷氧基 - 苯磺酰基)-3-杂芳基 - (硫代)脲除草剂 ,C 3 H 7 -i,CH 2 -CH = CH 2,CH 2 -C 3 CH 2或CH 2 -C 6 H 5,R 2是CH 3,OCH 3,OC 2 H 5,SCH 3,NH-CH 3或NH-C 2 H 5,X是N,Y是N,Z是C -CH 3,C-C 2 H 5,C-OCH 3或C-OC 2 H 5; 或(B)R是CF 3,Q是O,R 1是CH 3,C 2 H 5,C 3 H 7-n,C 3 H 7-i,CH 2 -CH = CH 2,CH 2 -C 3 CH 2或CH 2 -C 6 H 5,R 2是CH 3,OCH 3或OC 2 H 5, X是N,Y是CH,Z是C-C 2 H 5,C-OCH 3或C-OC 2 H 5; 或(C)R是CH 2 -CH 2 Cl,Q是O,R 1是CH 3,C 2 H 5,C 3 H 7-n,C 3 H 7 -i,CH 2 -CH = CH 2,CH 2 -C 3 CH 2或CH 2 -C 6 H 5,R 2是CH 3,OCH 3, OC2H5,SCH3,NH-CH3或NH-C2H5,X是N,Y是N,Z是C-CH3,C-C2H5,C-OCH3或C-OC2H5; 或(D)R是CH 2 -CH 2 Cl,Q是O,R 1是CH 3,C 2 H 5,C 3 H 7-n,C 3 H 7 -i,CH 2 -CH = CH 2,CH 2 -C 3 CH 2或CH 2 -C 6 H 5,R 2是CH 3,OCH 3或 OC2H5,X是N,Y是CH,Z是C-CH3,C-C2H5,C-OCH3或C-OC2H5; 或(E)R是CHF 2,Q是O,R 1是CH 3,R 2是CH 3,X是N,Y是N,Z是C-CH 3,或其与金属或碱性有机氮化合物的盐。
摘要:
Alkoxy and aryloxy isothiocyanates are produced by the reaction of a haloformate and an alkali or alkaline earth metal thiocyanate in the presence of water and a catalyst comprising a six membered mononuclear or ten membered fused polynuclear aromatic, heterocyclic compound having 1 or 2 nitrogen atoms as the only hetero atoms in the ring.