Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
  • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
  • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
  • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
  • C07D213/81—Amides; Imides
  • C07D213/82—Amides; Imides in position 3
• • 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
  • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
  • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
  • A01N37/28—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof containing the group; Thio analogues thereof
• • 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
  • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
  • A01N37/52—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing groups, e.g. carboxylic acid amidines
• • 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
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
  • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
  • A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
  • A01N43/10—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with sulfur as the ring hetero atom
• • 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
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
  • A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
• • 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
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
  • A01N43/60—1,4-Diazines; Hydrogenated 1,4-diazines
• • 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
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
  • A01N43/88—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with three ring hetero 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
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
  • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
  • A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
• • 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
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
  • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
• • 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
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
  • A01N47/42—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides containing —N=CX2 groups, e.g. isothiourea
  • A01N47/44—Guanidine; Derivatives thereof
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C259/00—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups
  • C07C259/04—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids
  • C07C259/10—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids having carbon atoms of hydroxamic groups bound to carbon atoms of six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C259/00—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups
  • C07C259/12—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups with replacement of the other oxygen atom of the carboxyl group by nitrogen atoms, e.g. N-hydroxyamidines
  • C07C259/18—Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups with replacement of the other oxygen atom of the carboxyl group by nitrogen atoms, e.g. N-hydroxyamidines having carbon atoms of hydroxamidine groups bound to carbon atoms of six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
  • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
  • C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
  • C07D241/14—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members 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
  • C07D241/24—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
  • C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
  • C07D295/08—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
  • C07D295/084—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
  • C07D295/088—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
  • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
  • C07D413/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

• This invention relates to the use of hydroxylamine derivatives of general formula (I), wherein
• R represents phenyl, N-heteroaryl, S-heteroaryl or a naphthyl group which may be substituted with one or more halo, alkyl, alkoxy, haloal- kyl or nitro, an unsubstituted or substituted phenylamino or alky- lamino or lower alkoxy,
• X represents halo, preferably chloro or bromo, amino or an unsubstituted or substituted phenylamino group, or amino substituted with one or two lower alkyl or a hydroxy group provided that if R represents unsubstituted or substituted phenylamino, alkylamino or lower alkoxy, then X may not represent halo,
• Y represents hydrogen, hydroxy or acyloxy, preferably longer alkanoy- loxy, or if Y represents hydroxy, the molecule may contain a dioxazine ring closed at the carbon atom carrying the X group formed by formal XH elimination,
• R and R independently from each other, represent hydrogen or lower alkyl group provided that R 2 and R 3 may not represent hydrogen simultaneously,
• weather stresses such as cold, frost and drought cause significant losses for the agriculture.
• weather stresses may occur in any period of the growth or vegetation of the plant. Although they affect the plants in various ways and the plants react to them differently according to species and type, the effect is usually connected to the water metabolism of the plants.
• the protection of plants against weather stresses is made more difficult by the widely varied distribution of the time, strength and length of these stresses present at most agricultural regions.
• a temperature is considered cold if it is less than the minimum temperature necessary for normal physiological functioning of the individuals belonging to a given plant species or type, but greater than the freezing point of the water. Generally its effect may not be determined immediately by simple observation. The damage caused by the cold appears later, after warming up, such as the decrease in plant growth, the withering or fading (chlorosis), or in the most severe cases, death of the plant.
• frost i.e. the temperature below zero degree centigrade does not necessarily cause the plant to perish. After it is gone, the plant may be regenerated but the irreversible cell damages caused by the frost will strain its development, which will decrease its yield in the end.
• growth regulating materials which are compounds of hormonal activity, affect the cold, frost and drought tolerance of plants positively, and therefore they are applied for the treatment of cultivated plants.
• a typical example is abscisic acid, which is a growth regulating hormone. Abscisic acid itself is difficult to synthesise and hence it is not applied in agriculture.
• materials analogous to abscisic acid chemically and in their effect are used, which have identical or stronger effect than the abscisic acid itself , especially when combined with other compounds, which ensures a synergetic increase in the effect.
• 9608481 Al describes that plants are treated with epoxycyclohexane derivatives so as to make their development and yield more favourable and to increase their tolerance against cold and drought. Besides these compounds, brassidosteroids are also used as synergetic auxiliarys.
• the EP No. 327309 Al describes a compound that contains a poly-substituted cyclohexenyl-acetylene derivative as effective agent, and a diversely and multi-substituted phenyl-benzyl- urea derivative as synergetic auxiliary. With the help of this substance of hormonal activity, the tolerance of the plant against drought may be improved.
• secondary or tertiary ⁇ -hydroxyethyl-amines or respective quaternary ammonium salts preferably 2-hydroxy-ethyl-amines and trimethyl- ⁇ -hydroxy-ethyl- ammonium-chloride (choline-chloride) and, in certain cases, combinations of these may be applied to improve the tolerance of plants against cold and frost.
• the effective agent is applied to the plant by spraying. It may be concluded from the experimental section of the Patent that the effective agent is aimed at changing the phospholipid composition of the membrane of plant cells, and thus the fluidity, of the membrane. Hence the mentioned effective agents may be applied for the treatment of fully developed plants only.
• the substance is utilised, as described in the above mentioned paper, and this effect causes among others the improved tolerance of the sprouting plant against cold.
• the growth regulating substances of hormonal activity possess all of the disadvantages described above.
• R represents phenyl, N-heteroaryl, S-heteroaryl or a naphthyl group which may be substituted with one or more halo, alkyl, alkoxy, haloal- kyl or nitro, an unsubstituted or substituted phenylamino or alky- lamino or lower alkoxy,
• X represents halo, preferably chloro or bromo, amino or an unsubstituted or substituted phenylamino group, or amino substituted with one or two lower alkyl or a hydroxy group provided that if R represents unsubstituted or substituted phenylamino, alkylamino or lower alkoxy, then X may not represent halo,
• Y represents hydrogen, hydroxy or acyloxy, preferably longer alkanoy- loxy, or if Y represents hydroxy, the molecule may contain a dioxazine ring closed at the carbon atom carrying the X group formed by formal XH elimination,
• R 2 and R 3 independently from each other, represent hydrogen or lower alkyl group provided that R 2 and R 3 may not represent hydrogen simultaneously,
• R 2 and R 3 along with the adjacent nitrogen atom form a 5 to 7- membered saturated hetero ring, show the required effect and satisfy the mentioned requirements.
• this invention relates to the use of hydroxylamine derivatives of general formula (I), where R 1 , X, Y, R 2
• a lower alkyl group contains preferably 1-6 carbon atoms, most preferably 1-4 carbon atoms, and a lower alkoxy group contains 1-6, preferably 1-4 carbon atoms.
• R is a substituted phenyl or phenylamino group
• the alkyl groups attached to the phenyl ring as substituents are preferably lower 1-6 carbon atom alkyl groups.
• the alkoxy substituents of the phenyl ring preferably contain 1-6 carbon atoms.
• the haloalkyl substituents of the phenyl ring contain preferably alkyl, most preferably Ci-6 alkyl.
• haloalkyl substituent is the trifluoro- methyl group.
• R represents alkylamino, it preferably contains at most 12 carbon atoms.
• R represents N-heteroaryl, it is preferably pyridyl or pyrazinyl group, while if R represents an S-heteroaryl group, it is preferably tienyl.
• Y represents a long carbon chain alkanoyloxy, it preferably contains 12-20 carbon atoms.
• hydroxylamine derivatives of general formula (I) are known compounds.
• Those compounds of general formula (I) in which R represents phenyl or pyridyl or naphtyl which may be substituted with halo or alkoxy, X represents amino and Y represents hydroxy, are known from Hungarian Patent No. 177.578, which also describes the process of preparation of these compounds, as well as the different possibilities for synthesis.
• These compounds, as selective beta-blocking agents, may be applied in the therapy of angiopathy, primarily diabetic angiopathy.
• R represents phenylamino which is unsubstituted or substituted with alkyl, alkoxy, halo, haloalkyl or nitro, or an alkoxy or alkylamino group
• X represents hydroxy
• Y is hydrogen, hydroxy or alkanoyloxy
• tautomery may occur, i.e. they may appear in a tautomeric structure different from but corresponding to the formula (I).
• compounds of general formula (I) contain a hydroxy group as X, where the tautomeric version containing a -(CO)-NH- molecule part not appearing in the structural formula is more stable.
• New compounds are those hydroxylamine derivatives of general formula (I), in which X represents halo, Y is hydroxy, and R .. represents a group that is different from the ones described in the above mentioned Hungarian Patent No. 207.988 dealing with these kinds of compounds, for example phenyl substituted with alkyl, haloalkyl or nitro.
• These substances are prepared analogously to the cited description by diazotating the corresponding compound containing a NH2 group in the place of X.
• the necessary starting amino compounds are produced also by known method, by the coupling reaction of the corresponding amidoxime and a 3-amino-2-propanol derivative, for example according to the method described in the Hungarian Patent No. 177.578.
• N-substituted amidoximes of general formula (I), where R represents an aromatic group and X represents a substituted amino group are also novel compounds, and may be produced by the coupling reaction of a suitable imidoyl-halide of general formula (1), wherein Hal represents a halo and R is as above, while R' is the substituent of the amino group of X, and a l-amino-3-aminooxy- propane derivative of general formula (2), where R 2 , R and Y are as above.
• the reactions should be performed in a neutral solvent, for example in chlorinated hydrocarbon, at room temperature and after extraction separation, the product is isolated as a salt with a suitable organic or inorganic acid.
• novel compounds of general formula (I) are N-hydroxy- guanidine derivatives in which both R and X are substituted nitrogen atoms. These derivatives are produced by the acylation of a suitable aminooxy compound of general formula (2), if the acylating agent is haloformamidine of general formula (3), where Hal represents halogen, R is as above, and R' and R" are substituents of the amino group appearing as X in the product.
• the reaction is performed in a two phase system, in the mixture of some organic solvent not mixable with, water and a aqueous base, preferably aqueous sodium-carbonate solution.
• the product is isolated in this case also by extraction separation and, if possible, by salt- formation.
• Any of those new compounds of general formula (I), in which Y represents acyloxy, may be produced by O-acylation of the corresponding compound containing hydroxy as Y.
• the starting compounds are either known from the above mentioned literature or may be produced according to the method described.
• acylating agent acid halides, active esters or other usual reagents applicable for O-acylation may be used.
• the reactions can be performed in a neutral solvent, usually at room temperature and if necessary in the presence of a suitable acid-binding agent, such as an organic or inorganic base, for example triethylamine or solid sodium- carbonate.
• the acid chlorides are preferable, where the compound itself may behave as acid-binding agent, and hence usually the product may be easily isolated in the form of hydrochloride by simple ethereal crystallisation after evaporation.
• the product may be easily isolated in the form of hydrochloride by simple ethereal crystallisation after evaporation.
• Schotten-Baumann acylation may also be applied.
• the products are generally isolated in the form of their salt with a organic or an inorganic acid.
• Compound 15 Compounds of general formula (I) are favourable with respect to application in the cultivation of plants because they are suitable for treating both the fully developed plant and the seed or the seedling. These compounds may be applied to the plants using any of the usual procedures widely used in plant-protection. Based on the above, the invention relates to a procedure to increase the tolerance of cultivated plants against weather stresses. According to the invention, the protected plant or its seed is treated with a hydroxylamine derivative of general formula (I), where R , X, Y,
• R 2 and R 3 are as above.
• an aqueous solution of the com- pound of general formula (I) is used for the treatment, but alternatively a preparation containing the usual carriers and the hydroxylamine derivative of general formula (I) as effective agent may be applied.
• the dose and the concentration of the effective agent of general formula (I) is dependent on the protected plant species or type and on the method of the application.
• the procedure according to the invention is aimed at improving the tolerance of the plant against cold and frost, preferably the seed of the plant should be treated with a hydroxylamine derivative of general formula (I), where
• R 1 , X, Y, R 2 and R 3 are as above.
• the seed of the plant must be covered with the proper product containing the active agent and suitable for coating, preferably pearled, in certain cases dressed, or the aqueous solution of the effective agent may simply be used.
• the preferable method is to soak the seed of the plant in an aqueous solution of a compound of general formula (I). For this purpose a 1-200 mg/1 concentration of the compound of general formula (I) in aqueous solution is prepared.
• the procedure according to the invention may be performed by coating the seed of the plant with a solution containing a hydroxylamine derivative of general formula (I).
• the compounds of general formula (I) may be combined with dressing agents in certain cases.
• pearling agents are applied, which contain compounds of general formula (I) in a concen- tration of 0.1- 10 g/1 along with the usual pearling and auxiliary materials.
• the pearling agents may contain other effective agents beside the mentioned effective agent as well, such as fungicides or additives promoting germination, for example microelements.
• the pearling agent is applied in a small volume. For example, when treating bean, soybean or maize seeds, only 1 ml or less amount of pearling agent is used for
• this invention relates to a procedure for improving the tolerance of cultivated plants against cold, where the plant is sprayed before or at the time when the cold season sets in with a spray preparation containing a hydroxylamine derivative of general formula (I) as effective agent.
• the spraying is performed with a 1-500 mg/litre concentration aqueous solution of the effective agent, which may occasionally contain spraying auxiliary materials, such as surface active material (detergent).
• auxiliary materials such as surface active material (detergent).
• compounds of general formula (I) may be combined and sprayed to the plant to be protected with other effective agents such as fungicides.
• the spraying is to be performed at the beginning of the period hazardous in terms of cold temperature. If more than one period is to be taken into consideration, then the plants must be sprayed at the beginning of each such period.
• the plant to improve the tolerance of cultivated plants the plant must be sprayed before or at the time when the dry season sets in with a spray preparation containing a hydroxylamine derivative of general formula (I) as effective agent.
• the spraying is performed using a 1-500 mg/1 aqueous solution of the active agent.
• the plants to be protected are sprayed before or at the beginning of the period when there is a risk of drought. In every case, the characteristics of the given plant species or type determine the applicable quantity of the active agent. If more than one drought period is to be taken into consideration, then the spraying must be repeated at the beginning of each such period.
• a simple aqueous solution of the hydroxylamine derivatives of general formula (I), but preferably such preparations are used which contain proper auxiliary materials beside the active agent, for improving the spraying, distribution and the absorption of the active agent.
• composition of the invention for improving the tolerance of cultivated plants against weather stresses contains 0.001-95 m/m% hydroxylamine derivative of general formula (I), in which R 1 , X, Y, R 2 and R 3 are as above, beside the solid or liquid carriers and possible auxiliary materials suitable for agricultural application.
• the composition preferably contains water as liquid vehicle agent.
• the aqueous solution of the active agent is a concentrate, which should be diluted before application in order to prepare the proper concentration mentioned above.
• the aqueous solutions contain surfactants, those solutions for treating the seed contain dressing and pearling auxiliary materials, such as film forming materials.
• the sprays contain an adhesion improving agent, a substance to improve spreading, light protecting agent, if required, a stabilising agent and other additives beside the detergents.
• ULV concentrates, emulsif ⁇ able concentrates, hydrophyl powders, soluble granulates or microgranulates dilutable with water may be applied.
• These products contain anionic or non-anionic detergents in order to help the dilution with water.
• the solid products may contain kaolin, diatomite or dolomite as vehicle, but may also contain any other solid vehicle agent widely applied in such products.
• perlite is used as vehicle agent for the production of microgranulate.
• compositions of the invention may be combined or simultaneously applied with other pesticides, if the active agent of the latter is compatible with the active agent of the composition of the invention. In these cases, the spraying of the composition of the invention does not require a separate process, it can be performed along with the usual pesticide treatment of the cultivated plants.
• N-[2-hydroxy-3-(l-piperidinyl)propoxy]-2'-nitro- benzenecarboximidoyl chloride monohydrochloride (Compound 5) 6.0 g (16.7 mmol) of N-[2-hydroxy-3-(l-piperidinyl) propoxy]-2'- nitro-benzene-carboximidamide monohydrochloride is dissolved in 21 ml of water, then 48 ml of concentrated hydrochloric acid is added. The solution is cooled to -5 °C, then a cold solution of 2.1 g (33.3 mmol) of sodium nitrite in 9 ml of water is added dropwise. Throughout the reaction the internal temperature is maintained at 0 C. When the addition is completed, the mixture is stirred for a further four hours and cooled overnight. The product is filtered off, washed with cold water and dried.
• the resulting base is dissolved in (5.33 g) 50 ml of ethyl-acetate and then 3.35 ml of 3.67 N hydrochloric acid /ethyl-acetate is added.
• the isolated crystals are filtered off, washed with ethyl-acetate and dried.
• N,N-dimethyl-N'-phenyl-N"-[2-hydroxy-3-(l-piperidinyl)propoxy]- guanidine hydrochloride (Compound 13) 1, 150 mg (6.58 mmol) l-aminooxy-2-hydroxy-3-(l-pi ⁇ eridinyl)- propane] is dissolved in 20 ml of ether and to this solution 20 ml of 1 M sodium carbonate solution is added, then 1,206 mg (6.58 mmol) of N,N- dimethyl-N'-phenyl-chloroformamidine dissolved in 10 ml of ether is added.
• Results marked with * are significant compared to the control, if
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• Results marked with * are significant compared to the control, if. It was further observed that Compound 8 decreased the number of ungerminating seeds by 50% (control: 33%, treated: 17%, significant at P ⁇ 0.05).
• Control: 33%, treated: 17%, significant at P ⁇ 0.05 did not influence the germination of the seeds and the development of the plants kept at 25°C. Under the circumstances of the CSVT test, they increased the length of the sprouts and the roots along with the proportion of the high vigour seedlings. The ratio of the ungerminating seeds decreased by 30% on average due to the treatment with the active agents. The results are demonstrated in Table 5.
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• the CSVT procedure is developed to predict the expected minimal ratio of sprouting seeds under environmental stresses.
• the ratio of those seeds that safely sprout and properly germinate in cold spring weather is 90% for seeds which proved to be of high vigour in the CSVT test, while the ratio of those seeds which safely sprout and properly germinate in cold spring weather is only 60% for seeds that proved to be of low vigour in the test.
• an active agent improves the vigour of the seedlings, it in the end improves the sprouting ratio under open field conditions in the case of ground temperature colder than optimal.
• the above experiments prove that the compounds of general formula (I) are able to improve the vigour of the seedlings and hence improve the chance of sprouting, if unexpectable weather stresses occur after the sowing.
• Soybean seeds are treated with a pearling agent, which contains 1 mg/ml of N-[3-(l-piperidinyl)propoxy]-3-nitro-benzimidoyl-chloride monohydrochloride (Compound 4) in a 5% aqueous polyvinylalcohol solution.
• a pearling agent which contains 1 mg/ml of N-[3-(l-piperidinyl)propoxy]-3-nitro-benzimidoyl-chloride monohydrochloride (Compound 4) in a 5% aqueous polyvinylalcohol solution.
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• PVA slightly increased the ratio of high vigour plants.
• the PVA solution containing Compound 4 proved to be such a pearling agent which was able to increase the ratio of high vigour plants significantly under the experimental conditions, increasing the length of both the sprouts and the roots.
• the plants were hardened before the application of the active agent; by withholding the water for a few days, until the first signs of withering appeared. Then the plants were watered and the active agent was either dissolved in the water, or sprayed to the plants directly. Afterwards, the plants were subjected to different periods of drought according to the given experiment, watered again, and after a week-long regeneration period, the survival ratio was determined. a) Seaway bean cultivar was hardened for 5 days by withholding the water. Afterwards the plantlets were watered for two days nor- mally.
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• Soybeans of soybean cv. B ⁇ lyi 44 were hardened for 6 days by withholding the water. This was followed by two days of watering, and the active agent was applied in the water. The concentration of the solution of the active agent was 50 mg/ litre. After a 4-day-long cease of watering and a one week regeneration period, the number of surviving plants was recorded. The results are listed in Table 10. Table 10.
• Results marked with * are significant compared to the control, if P ⁇ 0.05.
• Seedlings of bean cv. Seaway were cultivated under normal conditions for the first two weeks, then they were treated with 10 mg/ litre and 100 mg/ litre concentration solutions of the examined active agents 2 and 1 days before the initiation of the frost tolerance experiments. In the experiment, the plants were kept at -2°C for 8 hours, then grew under normal conditions for 1 week, and the survival ratio was determined. 4 trays were used for each experiment and 6 seeds were planted in each tray. The compounds in Table 1 1. significantly increased the survival ratio. Table 11.
• Results marked with * are significant ⁇ ;ompared to the control, if
• the experiment was performed using the Mo 17 maize inbred line.
• the seeds were coated with a 2% solution of the examined compound dissolved in 2 ml polyvinylalcohol before germination, where the above quantity of solution is applied for 100 seeds.
• the seeds were germinated for 3 days wrapped in wet filter paper, they were sown and then cultivated in gradient chamber for 6 weeks. In the gradient chamber, the temperature was maintained on a scale between 1 and
• the experiment was performed using soybean cv. B ⁇ lyi 44. Before sowing, the seeds were treated with Rhyzobium Japonicum nitrogen- binding bacterium, which forms a root nodule providing 50-70% of the nitrogen demand of the plant.
• the examined compounds were applied by pearling the seeds; 1 ml of pearling agent containing 1 mg of active agent in a 5% aqueous PVA solution was used for 100 seeds.
• the experiments were perfomed on the Mo 17 and AMO 406 lines. Before sowing, the seeds were dressed with fungicides, insecticides and rodent-control agents, and, at the same time, the tested compounds were applied in the form of a 2.5 mg/ml concentration solution in a 2% PVA solution; 2 ml of solution was used for 100 seeds.
• the foliar spray is prepared with the following composition (proportions by weight) :
• Foliar spray is prepared with the following composition (proportions by weight): Compound 4 20 alkyl-aryl-sulphonate 5 water 75
• Pearling agent is prepared with the following composition (proportions by weight) :
• the pearling agent must be applied as active agent in a quantity of 0.01-0.02 m/m% with respect to the weight of the seed.
• Granulate is prepared with the following composition
• the mixture of the components must be ground in a hammer mill until it reaches the particle size of 5 micron.
• Powder preparation is prepared with the following composition (proportions by weight) : Compound 6 50 poly-vinyl-pyrrolidon 10 silicon-dioxide 25 china-clay (kaolin) 15 Example 20 Powder preparation
• Powder preparation is prepared with the following composition
• Compound 1 50 calcium-ligninesulphonate 5 isopropyl-naphtalene-sulphonate 1 silicon-dioxide 4 filler (kaolin) 40

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