CH574429A5 - 3-Hydroxy-5-mercapto-1,2,4-triazoles - useful as pesticide intermediates, prepd from hydrazines or hydrazones and alkoxycarbonyl isothiocyanates - Google Patents
3-Hydroxy-5-mercapto-1,2,4-triazoles - useful as pesticide intermediates, prepd from hydrazines or hydrazones and alkoxycarbonyl isothiocyanatesInfo
- Publication number
- CH574429A5 CH574429A5 CH1485775A CH1485775A CH574429A5 CH 574429 A5 CH574429 A5 CH 574429A5 CH 1485775 A CH1485775 A CH 1485775A CH 1485775 A CH1485775 A CH 1485775A CH 574429 A5 CH574429 A5 CH 574429A5
- Authority
- CH
- Switzerland
- Prior art keywords
- formula
- alkyl
- hydrazone
- radical
- carried out
- Prior art date
Links
- -1 alkoxycarbonyl isothiocyanates Chemical class 0.000 title claims description 27
- 150000007857 hydrazones Chemical class 0.000 title claims description 8
- 150000002429 hydrazines Chemical class 0.000 title description 3
- ZPDYXWCBXQWHAI-UHFFFAOYSA-N 5-sulfanylidene-1,2,4-triazolidin-3-one Chemical class O=C1NNC(=S)N1 ZPDYXWCBXQWHAI-UHFFFAOYSA-N 0.000 title description 2
- 239000000543 intermediate Substances 0.000 title description 2
- 239000000575 pesticide Substances 0.000 title 1
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 5
- SRVJKTDHMYAMHA-WUXMJOGZSA-N thioacetazone Chemical compound CC(=O)NC1=CC=C(\C=N\NC(N)=S)C=C1 SRVJKTDHMYAMHA-WUXMJOGZSA-N 0.000 claims abstract description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims abstract description 4
- 125000001624 naphthyl group Chemical group 0.000 claims abstract description 4
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 claims abstract description 3
- 125000002950 monocyclic group Chemical group 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical class C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- 150000007513 acids Chemical class 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 125000003342 alkenyl group Chemical group 0.000 claims description 3
- 239000012442 inert solvent Substances 0.000 claims description 3
- 238000006798 ring closing metathesis reaction Methods 0.000 claims description 3
- 150000008043 acidic salts Chemical class 0.000 claims description 2
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 2
- 239000012736 aqueous medium Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 3
- BRWIZMBXBAOCCF-UHFFFAOYSA-N hydrazinecarbothioamide Chemical compound NNC(N)=S BRWIZMBXBAOCCF-UHFFFAOYSA-N 0.000 abstract description 2
- 125000004343 1-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C([H])([H])[H] 0.000 abstract 1
- 125000000304 alkynyl group Chemical group 0.000 abstract 1
- 125000004344 phenylpropyl group Chemical group 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 150000003254 radicals Chemical class 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- BDTDECDAHYOJRO-UHFFFAOYSA-N ethyl n-(sulfanylidenemethylidene)carbamate Chemical compound CCOC(=O)N=C=S BDTDECDAHYOJRO-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- BUBLJYZBJBDBEK-UHFFFAOYSA-N 1-phenyl-5-sulfanylidene-1,2,4-triazolidin-3-one Chemical compound N1=C(O)N=C(S)N1C1=CC=CC=C1 BUBLJYZBJBDBEK-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- SNTWKPAKVQFCCF-UHFFFAOYSA-N 2,3-dihydro-1h-triazole Chemical compound N1NC=CN1 SNTWKPAKVQFCCF-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000004442 acylamino group Chemical group 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000004644 alkyl sulfinyl group Chemical group 0.000 description 2
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 2
- 125000004414 alkyl thio group Chemical group 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000001188 haloalkyl group Chemical group 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- JQLKSEQEILIJEG-UHFFFAOYSA-N n-(propan-2-ylideneamino)aniline Chemical compound CC(C)=NNC1=CC=CC=C1 JQLKSEQEILIJEG-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 150000000178 1,2,4-triazoles Chemical class 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OOTVRBPTSHCZJI-UHFFFAOYSA-N 1-methyl-5-sulfanylidene-1,2,4-triazolidin-3-one Chemical compound CN1NC(=O)NC1=S OOTVRBPTSHCZJI-UHFFFAOYSA-N 0.000 description 1
- IIVWHGMLFGNMOW-UHFFFAOYSA-N 2-methylpropane Chemical compound C[C](C)C IIVWHGMLFGNMOW-UHFFFAOYSA-N 0.000 description 1
- WJLLAXNNPOSKTM-UHFFFAOYSA-N 4-methylpentan-2-ylidenehydrazine Chemical compound CC(C)CC(C)=NN WJLLAXNNPOSKTM-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 241001425390 Aphis fabae Species 0.000 description 1
- 241000902805 Aulacophora Species 0.000 description 1
- 241001260012 Bursa Species 0.000 description 1
- 241000426497 Chilo suppressalis Species 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical class CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000258915 Leptinotarsa Species 0.000 description 1
- 241000243784 Meloidogyne arenaria Species 0.000 description 1
- 125000005118 N-alkylcarbamoyl group Chemical group 0.000 description 1
- 241000244206 Nematoda Species 0.000 description 1
- 241000238680 Rhipicephalus microplus Species 0.000 description 1
- 241001144193 Rhipocephalus Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 241000256250 Spodoptera littoralis Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241001454293 Tetranychus urticae Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- KMJJJTCKNZYTEY-UHFFFAOYSA-N chloro-diethoxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCOP(Cl)(=S)OCC KMJJJTCKNZYTEY-UHFFFAOYSA-N 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000001983 dialkylethers Chemical class 0.000 description 1
- GDNCXORZAMVMIW-UHFFFAOYSA-N dodecane Chemical compound [CH2]CCCCCCCCCCC GDNCXORZAMVMIW-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- MXZBXCKWSHEHAP-UHFFFAOYSA-N ethanethioyl chloride Chemical compound CC(Cl)=S MXZBXCKWSHEHAP-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- RIFGWPKJUGCATF-UHFFFAOYSA-N ethyl chloroformate Chemical compound CCOC(Cl)=O RIFGWPKJUGCATF-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000003701 inert diluent Substances 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 150000002540 isothiocyanates Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 230000003032 phytopathogenic effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- RFAKLMBNSZNUNX-UHFFFAOYSA-N potassium;isothiocyanate Chemical compound [K+].[N-]=C=S RFAKLMBNSZNUNX-UHFFFAOYSA-N 0.000 description 1
- YORCIIVHUBAYBQ-UHFFFAOYSA-N propargyl bromide Chemical compound BrCC#C YORCIIVHUBAYBQ-UHFFFAOYSA-N 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- HLFCZZKCHVSOAP-DAMYXMBDSA-M sodium;(5z)-5-(carbamoylhydrazinylidene)-1-methyl-6-oxo-2,3-dihydroindole-2-sulfonate Chemical compound [Na+].NC(=O)N/N=C/1C(=O)C=C2N(C)C(S([O-])(=O)=O)CC2=C\1 HLFCZZKCHVSOAP-DAMYXMBDSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 1
- 150000003583 thiosemicarbazides Chemical class 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/08—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
- C07D249/10—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D249/12—Oxygen or sulfur atoms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing heterocyclic radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6515—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having three nitrogen atoms as the only ring hetero atoms
- C07F9/6518—Five-membered rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Plural Heterocyclic Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Cpds of formula (I): (where R is H or an inert organic gp). are prepd. by (a) reacting RNHNH2 with R"OCONCS (where R" = alkyl) and cyclising the resulting thiosemicarbazide by cleaving off R"OH, or (b) reacting RNH-N=CR1R2 (R1 = H or lower alkyl; R2 = lower alkyl) with R"OCONCS, pref in a solvent, and cyclising the resulting thiosemicarbazone in an aqs medium, pref. in the presence of acid. Cpds. (I) where R is opt. substd. alkyl, alkonyl or alkynyl, naphthyl, benzyl, phenethyl, 1-phenylethyl, phenylpropyl, a mono- or polycyclic alkyl gp. opt. bonded via an alkylene bridge, or opt. substd. phenyl, are new.
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von 1,2,4-Triazol-Derivaten der Formel I
EMI1.1
in welcher
R Wasserstoff, einen gegebenenfalls substituierten Alkyl-, Alkenyl- oder Alkinylrest, einen gegebenenfalls substituierten Phenyl-, Naphthyl-, Benzyl-, Phenäthyl- oder Phenylpropylrest einen mono- oder polycyclischen Cycloalkyl-Rest, welcher über ein Alkylenbrückenglied gebunden und/oder durch Alkyl substituiert sein kann, oder einen partiell hydrierten Napthyl-Rest bedeutet.
Als Alkylreste R kommen geradkettige oder verzweigte Reste mit 1 bis 18 Kohlenstoffatomen in Betracht, wie z.B.
der Methyl-, Äthyl-, n-Propyl-, Isopropyl-, n-Butyl-, sec.-Butyl-, Isobutyl-, tert.-Butyl-Rest, Pentyl-, Hexyl-, Octyl-, Decyl-, Dodecyl-, Tetradecyl-, Cetyl-, Octadecyl-Reste und ihre Isomeren; insbesondere niedere Alkyl-Reste mit 1 bis 6 Kohlenstoffatomen können substituiert sein, beispielsweise durch: Halogen, (Fluor, Chlor, Brom, Jod), Cyano, Nitro, Thiocyano, Alkoxycarbonyl, N,N-Dialkyl- und N-Alkyl-carbamoyl, Alkoxy, Alkylthio, Acylamino, Alkylsulfonyl und Alkylsulfinyl.
Als Alkenyl- oder Alkinyl-Reste R kommen geradkettige oder verzweigte Reste mit 3 bis 8 Kohlenstoffatomen in gerader Kette in Betracht; bevorzugt sind Propenyl, Butenyl, Propinyl, Butinyl, welche durch Methyl oder Äthyl substituiert sein können. Als Substituenten der vorstehend aufgeführten aromatischen Reste R (Phenyl und Naphthyl) sowie der Araliphaten kommen in Betracht; Halogen (Fluor, Chlor, Brom), Halogenalkyl, Nitro, Alkyl; ein Phenyl-Rest kann ausserdem noch durch Cyano, Thiocyano, Alkoxy, Alkylthio, Alkylsulfinyl, Alkylsulfonyl, Acylamino, über Sauerstoff, Schwefel, die SO- oder SO2-Gruppe gebundene, gegebenenfalls durch Halogen, Halogenalkyl und/oder Alkyl substituierte Phenyl- oder Benzyl-Reste substituiert sein. Die aromatischen und araliphatischen Reste R können ein- oder mehrfach durch die aufgeführten Reste substituiert sein.
Als Cycloalkylreste sind für, R insbesondere monocyclische Reste mit 3 bis 8 Ringkohlenstoffatomen in Betracht zu ziehen, welche durch niederes Alkyl, wie Methyl, Äthyl oder Isopropyl substituiert und/oder über das Methylen- oder ein Polymethylen-Brückenglied gebunden sein können. Beispiele solcher Reste sind Cyclopropyl, Cyclobutyl, Cyclopentyl und Cyclohexyl.
Die 1,2,4-Triazol-Derivate der Formel I sind wertvolle Zwischenprodukte für die Herstellung von Schädlingsbekämpfungswirkstoffen. Sie können beispielsweise durch Alkylierung der 5-Mercaptogruppe und Veresterung der 3-Hydroxygruppe mit einer Dialkylthiophosphorsäure in Thiophosphorsäureester mit ausgezeichneter insektizider Wirkung übergeführt werden.
Es ist bekannt, dass 1,2,4-Triazole der Formel I, in der R Wasserstoff bedeutet, nach einer von F. Arndt und F. Bielch angegebenen Methode [vgl. Ber. dtsch. Chem. Ges. 562276- 2283, (1923)] herzustellen, indem zunächst Thiosemicarbazid mit Methylthiocarbonylchlorid zum entsprechenden Thiosemicarbazidthiocarbonsäuremethylester umsetzt und diesen dann in Gegenwart von Alkali zum 3-Hydroxy-5-mercapto -1,2,4-triazol ringschliesst. Die Anwendung dieser Methode zur Herstellung von 1,2,4-Triazol-derivaten der Formel I, in der R eine andere Bedeutung hat als Wasserstoff, wird wesentlich erschwert durch die Tatsache, dass die hierfür benötigten, in 1-Stellung substituierten Hydrazine schwierig zugänglich sind.
Die Schwierigkeiten rühren daher, dass in vielen Fällen bei Anwendung der bekannten Methoden zur Herstellung von Thiosemicarbaziden aus substituierten Hydrazinen die Thiocarbamoylgruppe nicht, wie erwünscht, in der 1-Stellung, sondern in der 2-Stellung eingeführt wird. [vgl.
Acta Chemica Scandinavica 22, 1-50, (1968)1. Darüber hinaus ist das bekannte Verfahren infolge der grossen Zahl von Reaktionsschritten, die benötigt werden, umständlich.
Es wurde nun gefunden, dass man 1,2,4-Triazol-derivate der Formel I in einfacher Weise herstellen kann, wenn man ein Hydrazon der Formel II
EMI1.2
in welcher R die unter Formel I angegebene Bedeutung hat, R1 Wasserstoff oder niederes Alkyl und R2 niederes Alkyl bedeuten, mit einem Alkoxycarbonylisothiocyanat der Formel III Alkyl-O-CO-NCS (III) umsetzt und ein erhaltenes Thiosemicarbazon der Formel IV
EMI1.3
in welcher R, Rt und R2 die oben angegebene Bedeutung haben in wässrigem Medium in Gegenwart von Säuren zu einem 1,2,4-Triazol-derivat der Formel I ringschliesst.
Die Umsetzung eines Hydrazons der Formel II mit einem Alkoxycarbonylisothiocyanat der Formel III wird vorteilhaft in einem inerten Lösungs- oder Verdünnungsmittel durchgeführt, wobei sich Ketone, insbesondere Aceton, als besonders geeignet erwiesen haben. Es kommen jedoch andere inerte Lösungsmittel in Betracht, z.B. aliphatische und aromatische Kohlenwasserstoffe oder Halogenkohlenwasserstoffe, wie Hexan, Petroläther, Chloroform, Methylenchlorid, halogenierte Äthane, Benzol, Toluol, Xylole, Äther und ätherartige Verbindungen, wie Dialkyläther, 1,2-Dimethoxyäthan, Dioxan, Tetrahydrofuran, N,N-dialkylierte Amide, wie Dimethylformamid, Sulfoxide, wie Dimethylsulfoxid, Nitrile, wie Acetonitril, sowie Gemische solcher Lösungsmittel untereinander.
Als Säuren, in deren Gegenwart die Ringschlussreaktion durchgeführt wird, kommen Mineralsäuren, organische Säuren und Lösungen saurer Salze dieser Säuren in Betracht.
Die Umsetzung eines Hydrazons der Formel II mit einem Alkoxycarbonylisothiocyanat der Formel III erfolgt in einem Temperaturbereich von -40 bis +100 C, vorzugsweise bei 0 bis SO0C. Der Ringschluss wird in einem Temperaturbereich von 20 bis 120"C durchgeführt.
Die Reaktionspartner werden in äquimolaren Mengen in das Verfahren eingesetzt, wobei ein Oberschuss des einen oder anderen Reaktionspartners zur Vervollständigung des Reaktionsablaufes beitragen kann.
Das erfindungsgemässe Verfahren wird durch die folgenden Beispiele näher erläutert.
Beispiel 1
Herstellung von Ä thoxycarbonylisothiocyanat
390 g Kaliumisothiocyanat werden in 3 Liter absolutem Aceton bei 450C vorgelegt. Dazu tropft man bei 45 bis 50"C innert M Stunde 478 g Chlorameisensäureäthylester. Die Reaktion ist schwach exotherm und es entsteht eine gelbe Suspension. Diese wird 2 Stunden bei 500C gerührt, abgekühlt, filtriert, gewaschen und am Vakuum total abgedampft. Als Rückstand erhält man 425 g rohes, gelboranges Äthoxycarbonylisothiocyanat nach fraktionierter Destillation bei 47 bis 52"C/10 Torr.
Beispiel 2
Herstellung von 1 4sopropyl-3-hydroxy-5-mercapto-1 2,4- -triazol
Zu einer Lösung von 22,8 g Isopropylacetonhydrazon in 100 ml Aceton tropft man bei 10 bis 20"C unter Rühren 27,5 g Äthoxycarbonylisothiocyanat (siehe Beispiel 1) und rührt anschliessend 1 Stunde bei Raumtemperatur. Nach dem Abdampfen des Lösungsmittels erhält man 48,9 g 2-Isopropyl -4-äthoxycarbonyl-aceton-thiosemicarbazon als dickflüssiges, gelbes öl.
Analyse:
Ber.: C 48,9 H 7,8 N 17,1 S 13,0
Gef.: C 48,6 H 7,9 N 17,3 S 12,9
Das Produkt wird beim Stehen fest und hat nach dem Umkristallisieren aus Cyclohexan einen Schmelzpunkt von 56 bis 59"C. Hieraus erhält man durch Erhitzen in wässriger Salzsäure das Triazol gemäss Beispiel 4.
Beispiel 3 a) Herstellung von 2-Phenyl-4-äthoxycarbonyl-aceton-thio semicarbazon
29,6 g Acetonphenylhydrazon (Kp. 74 bis 75"C / 0,01 Torr) werden in 100 ml absolutem Äther und 200 ml Petroläther (Kp. 50 bis 70"C) gelöst. Dazu tropft man bei Raumtemperatur innert einer M Stunde 26,2 g Äthoxycarbonylisothiocyanat (siehe Beispiel 1). Die Temperatur steigt dabei um 30C und es fallen weisse Kristalle aus. Die Suspension wird 15 Stunden bei Raumtemperatur gerührt. Dann werden die Kristalle abfiltriert, gewaschen und getrocknet. Man erhält 33,8 g 2-Phenyl-4-äthoxycarbonyl-aceton-thiosemicarbazon mit einem Schmelzpunkt von 117 bis 117,5"C.
b) Herstellung von l-Phenyl-3-hydroxy-5-mercapto-1,2,4-tri- azol
27,9 g reines 2-Phenyl-4-äthoxycarbonyl-aceton-thiosem carbazon werden mit 150 ml Wasser, 50 ml Äthanol und 3 ml konz. Salzsäure 1 Stunde am Rückfluss bei 850C gekocht.
Nach dem Abkühlen auf 0 C werden die ausgefallenen Kristalle abfiltriert, gewaschen und getrocknet. Man erhält 18,4 g 1-Phenyl-3-hydroxy-5-mercapto-1,2,4-triazol als weisse Kristalle mit einem Schmelzpunkt von 223 bis 2260C.
Beispiel 4
Herstellung von 1 -Phenyl-3-hydroxy-5-mercapto-1,2,4-triazol
29,6 g Acetonphenylhydrazon werden in 30 ml Dimethylsulfoxid gelöst. Dazu tropft man innert 20 Minuten bei 10 bis 20"C 26,2 g Äthoxycarbonylisothiocyanat (siehe Beispiel 1).
Die dickflüssige gelbe Suspension wird eine /2 Stunde bei Raumtemperatur gerührt, mit 150 ml Äthanol verdünnt und mit 3 ml konz. Salzsäure angesäuert (pH 1). Die Lösung wird 1 Stunde am Rückfluss gekocht, das Äthanol abdestilliert und der Rückstand auf 0 C abgekühlt. Nach dem Filtrieren, Waschen und Trocknen erhält man 28,3 g blassgelbes l-Phenyl- -3-hydroxy-5-mercapto-l ,2,4-triazol mit einem Schmelzpunkt von 223 bis 226"C.
Aus analoger Weise können folgende 1,2,4-Triazol-derivate der Formel I hergestellt werden: 1 -n-Propyl-3 -hydroxy-5-mercapto- 1,2,4-triazol, Smp. 159-161"C 1 -n-Butyl-3 -hydroxy-5-mercapto- 1,2,4-triazol, Smp. 190-1910C l-n-Dodecyl-3-hydroxy-5-mercapto-1,2,4-triazol, Smp. 150-1530C.
Beispiel 5
Herstellung des 0, O-Diäthyl-O-(1-methyl-5-propargylthio -1,2,4-triazolyl(3))-thiophosphorsäureesters aus 1 -Methyl-5- -propargylthio-3-hydroxy-1 -1,2,4- triazol a) 1 -Methyl-3-hydroxy-5-propargyl-merkapto-J,2,4-triazol 13,lgl -Methyl-3-hydroxy-5-merkapto- 1,2,4-triazol und 13,1 g Propargylbromid legt man in 100 ml Äthanol vor. Zu dieser Suspension gibt man 11,1 g Triäthylamin auf einmal zu. Durch die exotherme Reaktion steigt die Temperatur auf 45 C. Aus der nun klaren Lösung fällt bald ein gelbes Produkt aus, das man abfiltriert und mit Wasser wäscht. Das ungelöste Material wird über P205 getrocknet.
Analyse:
Gef.: C 42,6 H 4,3 N 24,6 S 19,5
Ber.: C 42,59 H 4,17 N 24,83 S 18,95 Smp. 174-1750C.
b) O,O-Diäthyl-O-(1-methyl-5-propargylthio-1,2,4-triazolyl- [3]-thiophosphorsäureester 16,9 g I-Methyl-5-propargylthio-3-hydroxy-l ,2,4-triazol und 13,8 g Kaliumcarbonat werden 2 Stunden in 300 ml Methyläthylketon am Rückfluss erwärmt. Nach dem Abkühlen auf 40"C wird 19 g Diäthylthiophosphorsäurechlorid innert 10 Minuten zugetropft. Das Gemisch wird wieder 2 Stunden am Rückfluss erhitzt. Nach dem Kühlen auf Raumtemperatur werden die unlöslichen Salze abfiltriert und das Filtrat im Vakuum eingeengt. Das zurückbleibende öl wird zur Reinigung über eine Kieselgelsäule mit Chloroform als Laufmittel chromatographiert. Nach dem Abdestillieren des Lösungsmittes bleibt 27,3 g hellgelbes öl der Formel
EMI2.1
zurück.
Diese Verbindung hat eine ausgezeichnete Wirkung gegen Insekten wie z.B. Spodoptera littoralis; Leptinotarsa decem llneata; Aphis fabae; Chilo suppressalis; Aulacophora femoralis; Pachmoda und Cortophila oder Vertreter der Ordnung Akarina wie z.B. Rhipocephalus bursa; Boophilus microplus und Tetranychus urticae sowie gegen pflanzenpathogenen Nematoden wie z.B. Meloidogyne arenaria.
The present invention relates to a process for the preparation of 1,2,4-triazole derivatives of the formula I.
EMI1.1
in which
R is hydrogen, an optionally substituted alkyl, alkenyl or alkynyl radical, an optionally substituted phenyl, naphthyl, benzyl, phenethyl or phenylpropyl radical, a mono- or polycyclic cycloalkyl radical which is bonded via an alkylene bridge member and / or substituted by alkyl can be, or means a partially hydrogenated naphthyl radical.
Possible alkyl radicals R are straight-chain or branched radicals having 1 to 18 carbon atoms, such as e.g.
the methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl radical, pentyl, hexyl, octyl, decyl, dodecyl radical , Tetradecyl, cetyl, octadecyl radicals and their isomers; in particular lower alkyl radicals with 1 to 6 carbon atoms can be substituted, for example by: halogen (fluorine, chlorine, bromine, iodine), cyano, nitro, thiocyano, alkoxycarbonyl, N, N-dialkyl- and N-alkyl-carbamoyl, Alkoxy, alkylthio, acylamino, alkylsulfonyl and alkylsulfinyl.
Possible alkenyl or alkynyl radicals R are straight-chain or branched radicals with 3 to 8 carbon atoms in a straight chain; propenyl, butenyl, propynyl and butynyl, which can be substituted by methyl or ethyl, are preferred. As substituents of the aromatic radicals R listed above (phenyl and naphthyl) as well as the araliphatics come into consideration; Halogen (fluorine, chlorine, bromine), haloalkyl, nitro, alkyl; a phenyl radical can also be cyano, thiocyano, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, acylamino, phenyl or benzyl bonded via oxygen, sulfur, the SO or SO2 group, optionally substituted by halogen, haloalkyl and / or alkyl Residues may be substituted. The aromatic and araliphatic radicals R can be substituted one or more times by the radicals listed.
Cycloalkyl radicals for R are in particular monocyclic radicals with 3 to 8 ring carbon atoms which can be substituted by lower alkyl, such as methyl, ethyl or isopropyl, and / or bonded via the methylene or a polymethylene bridge member. Examples of such radicals are cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.
The 1,2,4-triazole derivatives of the formula I are valuable intermediates for the preparation of active ingredients for pest control. For example, by alkylating the 5-mercapto group and esterifying the 3-hydroxy group with a dialkylthiophosphoric acid, they can be converted into thiophosphoric acid esters with excellent insecticidal properties.
It is known that 1,2,4-triazoles of the formula I in which R is hydrogen, according to a method given by F. Arndt and F. Bielch [cf. Ber. dtsch. Chem. Ges. 562276-2283, (1923)] by first reacting thiosemicarbazide with methylthiocarbonyl chloride to give the corresponding methyl thiosemicarbazide thiocarboxylate and then ring-closing this in the presence of alkali to form 3-hydroxy-5-mercapto -1,2,4-triazole. The use of this method for the preparation of 1,2,4-triazole derivatives of the formula I, in which R has a meaning other than hydrogen, is made considerably more difficult by the fact that the hydrazines substituted in the 1-position are difficult to obtain are.
The difficulties arise from the fact that in many cases when the known methods for the preparation of thiosemicarbazides from substituted hydrazines are used, the thiocarbamoyl group is not introduced in the 1-position, as desired, but in the 2-position. [see.
Acta Chemica Scandinavica 22, 1-50, (1968) 1. In addition, the known method is cumbersome due to the large number of reaction steps that are required.
It has now been found that 1,2,4-triazole derivatives of the formula I can be prepared in a simple manner if a hydrazone of the formula II
EMI1.2
in which R has the meaning given under formula I, R1 is hydrogen or lower alkyl and R2 is lower alkyl, with an alkoxycarbonyl isothiocyanate of the formula III reacts alkyl-O-CO-NCS (III) and a thiosemicarbazone of the formula IV
EMI1.3
in which R, Rt and R2 have the abovementioned meaning, in an aqueous medium in the presence of acids, it closes to form a 1,2,4-triazole derivative of the formula I.
The reaction of a hydrazone of the formula II with an alkoxycarbonyl isothiocyanate of the formula III is advantageously carried out in an inert solvent or diluent, ketones, in particular acetone, having proven particularly suitable. However, other inert solvents can be used, e.g. aliphatic and aromatic hydrocarbons or halogenated hydrocarbons such as hexane, petroleum ether, chloroform, methylene chloride, halogenated ethanes, benzene, toluene, xylenes, ethers and ethereal compounds such as dialkyl ethers, 1,2-dimethoxyethane, dioxane, tetrahydrofuran, N, N-dialkylated amides such as dimethylformamide, sulfoxides such as dimethyl sulfoxide, nitriles such as acetonitrile, and mixtures of such solvents with one another.
The acids in whose presence the ring closure reaction is carried out are mineral acids, organic acids and solutions of acidic salts of these acids.
The reaction of a hydrazone of the formula II with an alkoxycarbonyl isothiocyanate of the formula III takes place in a temperature range from -40 to +100 ° C., preferably from 0 to 50 ° C. The ring closure is carried out in a temperature range from 20 to 120.degree.
The reactants are used in equimolar amounts in the process, and an excess of one or the other reactant can contribute to completing the reaction process.
The process according to the invention is illustrated in more detail by the following examples.
example 1
Production of Ä thoxycarbonyl isothiocyanate
390 g of potassium isothiocyanate are placed in 3 liters of absolute acetone at 450C. 478 g of ethyl chloroformate are added dropwise to this at 45 to 50 ° C. within M hour. The reaction is slightly exothermic and a yellow suspension is formed. This is stirred for 2 hours at 50 ° C., cooled, filtered, washed and evaporated completely in vacuo one 425 g of crude, yellow-orange ethoxycarbonyl isothiocyanate after fractional distillation at 47 to 52 "C / 10 Torr.
Example 2
Preparation of 14sopropyl-3-hydroxy-5-mercapto-1 2,4-triazole
27.5 g of ethoxycarbonyl isothiocyanate (see Example 1) are added dropwise at 10 to 20 ° C. to a solution of 22.8 g of isopropyl acetone hydrazone in 100 ml of acetone, while stirring, and the mixture is then stirred at room temperature for 1 hour. 9 g of 2-isopropyl -4-ethoxycarbonyl-acetone-thiosemicarbazone as a thick, yellow oil.
Analysis:
Calc .: C 48.9 H 7.8 N 17.1 S 13.0
Found: C 48.6 H 7.9 N 17.3 S 12.9
The product solidifies on standing and, after recrystallization from cyclohexane, has a melting point of 56 to 59 ° C. The triazole according to Example 4 is obtained from this by heating in aqueous hydrochloric acid.
Example 3 a) Preparation of 2-phenyl-4-ethoxycarbonyl-acetone-thio semicarbazone
29.6 g of acetone phenylhydrazone (boiling point 74 to 75 "C / 0.01 Torr) are dissolved in 100 ml of absolute ether and 200 ml of petroleum ether (boiling point 50 to 70" C). To this, 26.2 g of ethoxycarbonyl isothiocyanate are added dropwise at room temperature within one M hour (see Example 1). The temperature rises by 30C and white crystals precipitate. The suspension is stirred for 15 hours at room temperature. Then the crystals are filtered off, washed and dried. 33.8 g of 2-phenyl-4-ethoxycarbonyl-acetone-thiosemicarbazone with a melting point of 117 to 117.5 ° C. are obtained.
b) Production of l-phenyl-3-hydroxy-5-mercapto-1,2,4-triazole
27.9 g of pure 2-phenyl-4-ethoxycarbonyl-acetone-thiosem carbazon are concentrated with 150 ml of water, 50 ml of ethanol and 3 ml. Hydrochloric acid refluxed at 850C for 1 hour.
After cooling to 0 C, the precipitated crystals are filtered off, washed and dried. 18.4 g of 1-phenyl-3-hydroxy-5-mercapto-1,2,4-triazole are obtained as white crystals with a melting point of 223 to 2260.degree.
Example 4
Preparation of 1-phenyl-3-hydroxy-5-mercapto-1,2,4-triazole
29.6 g of acetone phenylhydrazone are dissolved in 30 ml of dimethyl sulfoxide. To this, 26.2 g of ethoxycarbonyl isothiocyanate are added dropwise within 20 minutes at 10 to 20 "C. (see Example 1).
The viscous yellow suspension is stirred for 1/2 hour at room temperature, diluted with 150 ml of ethanol and concentrated with 3 ml. Hydrochloric acid acidified (pH 1). The solution is refluxed for 1 hour, the ethanol is distilled off and the residue is cooled to 0.degree. After filtering, washing and drying, 28.3 g of pale yellow 1-phenyl-3-hydroxy-5-mercapto-1,2,4-triazole with a melting point of 223 to 226 "C. are obtained.
The following 1,2,4-triazole derivatives of the formula I can be prepared in an analogous manner: 1-n-propyl-3-hydroxy-5-mercapto-1,2,4-triazole, m.p. 159-161 "C 1 -n-butyl-3-hydroxy-5-mercapto-1,2,4-triazole, m.p. 190-1910C ln-dodecyl-3-hydroxy-5-mercapto-1,2,4-triazole, m.p. 150- 1530C.
Example 5
Preparation of the 0, O-diethyl-O- (1-methyl-5-propargylthio -1,2,4-triazolyl (3)) -thiophosphoric acid ester from 1-methyl-5--propargylthio-3-hydroxy-1 -1, 2,4-triazole a) 1-methyl-3-hydroxy-5-propargyl-merkapto-J, 2,4-triazole 13, 1-methyl-3-hydroxy-5-mercapto-1,2,4-triazole and 13.1 g of propargyl bromide are placed in 100 ml of ethanol. 11.1 g of triethylamine are added all at once to this suspension. As a result of the exothermic reaction, the temperature rises to 45 ° C. A yellow product soon precipitates from the now clear solution, which is filtered off and washed with water. The undissolved material is dried over P205.
Analysis:
Found: C 42.6 H 4.3 N 24.6 S 19.5
Calcd .: C 42.59 H 4.17 N 24.83 S 18.95 m.p. 174-1750C.
b) O, O-diethyl-O- (1-methyl-5-propargylthio-1,2,4-triazolyl- [3] -thiophosphoric acid ester 16.9 g of I-methyl-5-propargylthio-3-hydroxy-1, 2,4-triazole and 13.8 g of potassium carbonate are refluxed in 300 ml of methyl ethyl ketone for 2 hours. After cooling to 40 ° C., 19 g of diethylthiophosphoric acid chloride are added dropwise over the course of 10 minutes. The mixture is refluxed for 2 hours Cooling to room temperature, the insoluble salts are filtered off and the filtrate is concentrated in vacuo. For purification, the remaining oil is chromatographed over a silica gel column with chloroform as the eluent. After the solvent has been distilled off, 27.3 g of a light yellow oil of the formula remains
EMI2.1
back.
This compound has an excellent effect against insects such as Spodoptera littoralis; Leptinotarsa decem llneata; Aphis fabae; Chilo suppressalis; Aulacophora femoralis; Pachmoda and Cortophila or representatives of the order Akarina such as e.g. Rhipocephalus bursa; Boophilus microplus and Tetranychus urticae as well as against phytopathogenic nematodes such as Meloidogyne arenaria.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1485775A CH574429A5 (en) | 1972-12-08 | 1972-12-08 | 3-Hydroxy-5-mercapto-1,2,4-triazoles - useful as pesticide intermediates, prepd from hydrazines or hydrazones and alkoxycarbonyl isothiocyanates |
BE0/197001A BE878584Q (en) | 1972-12-08 | 1979-09-04 | NITROGENIC HETEROCYCLIC COMPOUNDS AND THEIR PREPARATION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1485775A CH574429A5 (en) | 1972-12-08 | 1972-12-08 | 3-Hydroxy-5-mercapto-1,2,4-triazoles - useful as pesticide intermediates, prepd from hydrazines or hydrazones and alkoxycarbonyl isothiocyanates |
Publications (1)
Publication Number | Publication Date |
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CH574429A5 true CH574429A5 (en) | 1976-04-15 |
Family
ID=4404366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1485775A CH574429A5 (en) | 1972-12-08 | 1972-12-08 | 3-Hydroxy-5-mercapto-1,2,4-triazoles - useful as pesticide intermediates, prepd from hydrazines or hydrazones and alkoxycarbonyl isothiocyanates |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE878584Q (en) |
CH (1) | CH574429A5 (en) |
-
1972
- 1972-12-08 CH CH1485775A patent/CH574429A5/en not_active IP Right Cessation
-
1979
- 1979-09-04 BE BE0/197001A patent/BE878584Q/en active
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