摘要:
The invention pertains to a synthetic mixture containing Z8-tetradecenyl acetate H3C-(CH2)4-CH = CH-(CH2)7-O-CO-CH3/'Z' (Ia) and E8-tetradecenyl acetate H3C-(CH2)4-CH = CH-(CH2)7-O-CO-CH3/'E' (Ib), a method of preparing this mixture, pesticides containing such a mixture for plant protection against pests of the order lepidoptera and a method of using it.
摘要:
Procédé de fabrication d'un mélange de 8E,10E-dodécadiènol (Ia), 8E,10Z-dodécadiènol (Ib), 8Z,10E-dodécadiènol (Ic) et 8Z,10Z-dodécadiènol (Id), H3C-CH=CH-CH=CH-(CH2)6-CH2-OH, (8E,10E = Ia), (8E,10Z = Ib), (8Z,10E = Ic), (8Z,10Z = Id) à partir de 1,8-octanediol (II), que l'on transforme, au moyen d'un agent d'halogénation, en (III): Hal-CH2-(CH2)6-CH2-OH, (III) étant ensuite mis à réagir avec (IV): H2C=CH-OR de manière à obtenir (V): Hal-CH2-(CH2)6-CH2-O-CH(CH3)-OR que l'on transforme en (VI): H3C-CH=CH-CH(OH)-(CH2)8-O-CH(CH3)-OR, par réaction avec l'aldéhyde crotonique, en présence de magnésium, et, à partir de (VI), en présence d'acide, on sépare en même temps le groupe inhibant alcoolique et on élimine la fonction hydroxy; nouveaux produits intermédiaires pour ce procédé de fabrication et procédé pour combattre la carpocapse Cydia pomonella, au moyen de ce mélange, selon la méthode de dysfonctionnement d'appariement.
摘要:
The invention pertains to a synthetic mixture containing Z8-tetradecenyl acetate H3C-(CH2)4-CH = CH-(CH2)7-O-CO-CH3/'Z' (Ia) and E8-tetradecenyl acetate H3C-(CH2)4-CH = CH-(CH2)7-O-CO-CH3/'E' (Ib), a method of preparing this mixture, pesticides containing such a mixture for plant protection against pests of the order lepidoptera and a method of using it.
摘要:
In order to prepare O-substituted hydroxylammonium salts having formula (I): R1-CHX-O-NH¿2? . HL, in which L = halogen, hydrogen sulphate; X = H, alkyl; R?1¿ = possibly substituted phenyl, thienyl, furanyl, pyrrolyl or -CR2=CR3R4, in which R?2, R3, R4¿ = H, halogen or alkyl, an acetonoxime-O-alkyl or acetonoxime-O-benzyl ether having formula (II) is reacted with water and a mineral acid H-L while the resulting acetone is continuously removed, and hydrolysis is intermittently carried out at 0-50 °C and under 10-500 mbar pressure. The O-substituted hydroxylammonium salts having the formula (I) are intermediate products for plant protective agents and pharmaceuticals.
摘要:
A process is disclosed for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id), H3C-CH=CH-CH=CH-(CH2)6-CH2-OH, (8E,10E = Ia), (8E,10Z = Ib), (8Z,10E = Ic), (8Z,10Z = Id) from 1,8-octandiol (II) which is transformed by a halogenating agent into (III): Hal-CH2-(CH2)6-CH2-OH, (III) is then reacted with (IV): H2C=CH-O-R, producing (V): Hal-CH2-(CH2)6-CH2-O-CH(CH3)-OR, which is transformed in the presence of magnesium with crotonaldehyde into (VI): H3C-CH=CH-CH(OH)-(CH2)8-O-CH(CH3)-OR. The alcohol protective group is split off from (VI) in the presence of an acid, at the same time as the hydroxyl function is eliminated. Also disclosed are intermediates for this process, and a process for fighting the fruit surface eating tortrix moth Cydia pomonella with this mixture according to the mating interruption method.
摘要:
In order to prepare hydroxylamine-ethers having formula (I), in which X stands for NO2, CN, halogen, alkyl and halogen alkyl; Y stands for H, NO2, CN, halogen, alkyl and halogen alkyl; n equals 0 to 2 or 1 to 4 when Y and all X's stand for halogen; alk stands for possibly substituted alkylene, as well as their salts with mineral acids or strong organic acids, either a hydroxyimino compound having formula (II), in which R1 stands for alkyl, R2 stands for alkyl, alkoxy or R1 + R2 stand for an alkylene chain, is reacted in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal hydrogen carbonate or alkali metal carbonate as bases, or the corresponding anion of (II) is directly reacted with an alkylating agent having formula (III), in which R3 stands for possibly substituted alkyl or phenyl, so that an oximino derivate having formula (IV) is produced. The oximino derivative (IV) is split by a mineral acid or a strong organic acid into a salt of (I), and if desired the latter is converted into the free compound (I) by means of a base. The hydroxylamine-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.
摘要:
A process for producing N-substituted 3-hydroxypyrazoles of formula (I) in which R1 is optionally substituted alkyl, aryl or heteroaryl, and R2, R3 are hydrogen, cyano, halogen and optionally substituted alkyl, aryl or heteroaryl, by the oxidation of a corresponding pyrazolidin-3-one.
摘要:
In order to prepare hydroxylamine-ethers having formula (I), in which X stands for NO2, CN, halogen, alkyl and halogen alkyl; Y stands for H, NO2, CN, halogen, alkyl and halogen alkyl; n equals 0 to 2 or 1 to 4 when Y and all X's stand for halogen; alk stands for possibly substituted alkylene, as well as their salts with mineral acids or strong organic acids, either a hydroxyimino compound having formula (II), in which R stands for alkyl, R stands for alkyl, alkoxy or R + R stand for an alkylene chain, is reacted in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal hydrogen carbonate or alkali metal carbonate as bases, or the corresponding anion of (II) is directly reacted with an alkylating agent having formula (III), in which R stands for possibly substituted alkyl or phenyl, so that an oximino derivate having formula (IV) is produced. The oximino derivative (IV) is split by a mineral acid or a strong organic acid into a salt of (I), and if desired the latter is converted into the free compound (I) by means of a base. The hydroxylamine-ethers (I) constitute intermediate products for plant protecting and pharmaceutical agents.