摘要:
Substituted azabicycloalkanes of the formula I ##EQU1## wherein R represents an alkyl radical which contains 2 or 3 carbon atoms and is substituted by chlorine or a straight-chain or branched alkenyl radical containing 3 or 4 carbon atoms, R.sub.1 and R.sub.2 represent hydrogen or the one represents methyl and the other represents hydrogen, and n is the number 1 or 2, may be used for influencing the growth of plants, preferably for combating weeds in rice-cultures.
摘要:
The invention relates to ecto- and endoparasitic milbemycins of formula I ##STR1## wherein R is methyl, ethyl, isopropyl or sec-butyl;R.sub.1 is hydrogen, fluorine or C.sub.1 -C.sub.4 alkyl;R.sub.2 is one of the groups ##STR2## in which formulaeis a value from 2 to 6;X is oxygen or sulfur;R.sub.3 is halogen; andR.sub.4 is hydrogen, C.sub.1 -C.sub.12 alkoxy, C.sub.3 -C.sub.7 cycloalkoxy or C.sub.2 -C.sub.6 alkenyloxy; or C.sub.1 -C.sub.18 alkyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkoxy, hydroxy and/or COOG, G being hydrogen, an alkali metal cation or an alkaline earth metal cation; or R.sub.4 is C.sub.3 -C.sub.7 cycloalkyl which is unsubstituted or substituted by halogen and/or C.sub.1 -C.sub.4 alkyl;C.sub.2 -C.sub.18 alkenyl which is unsubstituted or substituted by halogen;C.sub.2 -C.sub.18 alkynyl which is unsubstituted or substituted by halogen;phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkyl C.sub.1 -C.sub.4 alkoxy, nitro, cyano and/or C.sub.1 -C.sub.4 haloalkyl; or a 5- or 6-membered unsaturated or saturated heterocyclic ring system which contains one to three hetero atoms selected from the series consisting of nitrogen, oxygen and sulfur and which is unsubstituted or substituted by oxo and/or by one to three substituents selected from halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and/or C.sub.1 -C.sub.4 haloalkyl;to the use thereof in agriculture and to the preparation thereof by esterifying the 5-OH-milbemycins on which they are based.
摘要:
The present invention relates to milbemycin derivatives of the formula I ##STR1## wherein X is hydrogen or .beta.-halogen, R is methyl, ethyl, isopropyl or sec-butyl and Az is a 5 membered heterocyclic aromatic ring which contains 2-4 nitrogen atoms and is attached in the 1-position and which is unsubstituted or substituted by one or two C.sub.1 -C.sub.6 alkyl groups. These compounds, and the acid addition salts and metal complexes thereof, are effective pesticides for controlling endo-and ectoparasites, especially for controlling neamatodes which are parasites of animals. The may be obtained by appropriate esterification in 5-position of milbemycin derivatives. The selective .beta.-halogenation of 14,15-epoxymilbemycin derivatives can be effected via the intermediate .DELTA..sup.13,14 -15-hydroxymilbemycins with appropriate halogenating agents.
摘要:
Novel 1-(1,3-dioxolan-2-ylmethyl)-1H-imidazoles and 1H-1,2,4-triazoles wherein the 1,3-dioxolane ring is substituted in the 4- and in the 5-positions, said compounds having useful antimicrobial properties.
摘要:
Sulfur-containing oxime compounds of the formula I given herein are suitable for protecting cultivated plants against the phytotoxic action of aggressive agricultural chemicals, particularly herbicides. There are described methods for producing sulfur-containing oxime compounds of this type, and examples are given illustrating the application of these compounds.
摘要:
Phytobactericidal compositions which contain, as active ingredient, a compound of the formula I, or one of the salts thereof, ##STR1## wherein X represents hydrogen, fluorine or chlorine, and R represents a lower alkyl group, are suitable for combating Erwinia spp., particularly E. amylovora (fireblight on fruit trees) and E. carotovora (soft rot on potatoes and vegetables).
摘要:
An improved process for the preparation of 2-tert.-butyl-2-[1-phenoxy-1-(1H-azol-1-yl)]-methyl-ketales is disclosed, which process comprises reacting a 2-tert.-butyl-2-[1-phenoxy-1-halo]-methyl-ketale with a quaternary ammonium or phosphonium salt of an azole. The azoles used are 1H-1,2,4-triazole or 1H-imidazole.
摘要:
Compounds of the Formula I ##STR1## wherein R represents alkyl having from 1 to 4 carbon atoms and one of the symbols R.sub.1 and R.sub.2 is methyl and the other is hydrogen possess favorable herbicidal properties for practical purposes when used in crops for controlling their infestation by undesired plant growth.
摘要:
Phosphorylthio-acetyl derivatives of decahydroquinolines, octahydroindoles and octahydropyrindines are effective plant regulating agents (growth regulators and selective herbicides) and fungicides.
摘要:
Essentially, a process is described for the preparation of the 1-triazolylethyl ether derivatives, defined in claim 1, of the general formula I ##STR1## which consists in (a) reacting an oxirane of the formula II ##STR2## at temperatures of -20.degree. to +100.degree. C., in the presence of an acid catalyst or an acid condensation agent, with an alcohol of the formula IIIR.sub.3 --OH (III) to give a glycol monoether of the formula IV ##STR3## and (b) subsequently reacting the glycol monoether of the formula IV or one of its esters, in the presence of an acid-binding agent or condensation agent, at temperatures of 0.degree. to 150.degree. C., with a triazole of the formula V ##STR4## the substituents R.sub.1, R.sub.2 ; amd R.sub.3 in the formula II to IV being as defined under formula I and M in formula V being hydrogen or a metal atom. The novel compounds within the scope of formula I and their use are also described.