FIELD: organic chemistry. SUBSTANCE: product: derivatives of hydrogenated N-substituted pyridines of the formula (I) given in description where: A - NH; R1 - halogen; R2 - halogen or cyano-group; R3 - hydrogen, C2-C5-alkenyl, C2-C5-alkynyl, halogen, nitro-group; R4 - hydroxycarbonyl or C1-C5-alkylhydroxycarbonyl, or A and R4 form group -N-C(O). Reagent 1: isocyanate of the formula (II) given in description. Reagent 2: hydrogenated pyridine of the formula (III) given in description. Reaction conditions: in an aqueous medium, in the presence of base, at 0-20 C. Synthesized compounds were used in agriculture as herbicides. EFFECT: improved method of synthesis. 4 cl, 5 tbl
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Year |
Author |
Number |
| AMMONIUM SALTS |
1992 |
- Richard Dzhejms Anderson[Us]
- Ian Stjuart Klaudzdehjl[Gb]
- Takeo Khokama[Us]
|
RU2106346C1 |
| METHOD OF FIGHTING WEEDS |
0 |
|
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1991 |
- Lehri Kherman Khejdzhmen[Us]
- Dzheral'D Alojzius Roj[Us]
|
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| SELECTIVE HERBICIDAL COMPOSITIONS AND METHODS FOR CONTROLLING OF UNDESIRED PLANTS IN TAME CULTURES |
2001 |
|
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| ARYLSULFONYLUREAS, METHOD FOR THEIR PREPARING AND THEIR USING AS HERBICIDES |
1992 |
- Ort Osval'D
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|
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1992 |
- Uve Khartfil'[De]
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- Rikhard Ris[Gb]
|
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| DERIVATIVES OF ARYLSULFONYLUREA OR THEIR SALTS |
1992 |
- Khajnts Kene[De]
- Lotar Vill'Ms[De]
- Klaus Bauer[De]
- Khermann Biringer[De]
- Khel'Mut Bjurstell'[De]
|
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| DERIVATIVES OF 3,5-DIOXO-3,4,5,6-TETRAHYDROOXAZINES AND METHOD OF WEED CONTROL |
1991 |
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| DERIVATIVES OF GLYOXYL-CYCLOHEXENEDIONE, METHOD OF THEIR SYNTHESIS, HERBICIDE COMPOSITION, METHOD OF WEED INHIBITION |
1990 |
- Khans Ioakhim Bissinger[De]
- Ljudvig Shreder[De]
- Khel'Mut Bal'Trushat[De]
- Ehrik Raddats[De]
- Vol'Fgang Frustorfer[De]
- Manfred Garekht[De]
|
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| HERBICIDAL COMPOSITION CAPABLE OF PRODUCING SYNERGISTIC EFFECT AND METHOD FOR COMBATTING UNDESIRED WEED VEGETATION IN USEFUL VEGETATIONAL CULTURES |
1991 |
|
RU2041628C1 |
