Novel N-¬2-(2-Pyridyl)ethyl benzamide derivatives as fungicides

摘要

A pyridylethylbenzamide compound (I), its N-oxides of 2-pyridine except of N-{2-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]ethyl}2,6-dichlorobenzamide is new. A pyridylethylbenzamide compound of formula (I), its N-oxides of 2-pyridine except of N-{2-[3-chloro-5-(trifluoromethyl)-2-pyridinyl]ethyl}2,6-dichlorobenzamide is new. [Image] p : 1-4; q : 1-5; X : halo, alkyl, or haloalkyl; Y : halo, alkyl, alkenyl, alkynyl, haloalkyl, alkoxy, amino, phenoxy, alkylthio, dialkylamino, acyl, cyano, ester, hydroxy, aminoalkyl, benzyl, haloalkyl, halosulfonyl, halothioalkyl, alkoxyalkenyl, alkylsulfonamide, nitro, alkylsulfonyl, phenylsulfonyl, or benzylsulfonyl. Independent claims are also included for: (a) method of preparing compound (I) (b) a fungicidal composition comprising compound (I) and support; and (c) combating the phytopathogenic fungi of crops by applying the fungicide composition to plant seeds, plant leaves, and/or fruits of the plants or to the soil in which the plants are growing or in which it is desired to grow them. ACTIVITY : Fungicide. An aqueous solution of active material (compound I) was prepared at 2 g/l by grinding in solution 1 comprising water, Tween 80 diluted to 10% in water (5 Microl/mg active material), and clay; or in solution 2 comprising concentrated solution containing surfactants and adjuvants conventionally used (200 Microl/mg active material). The aqueous solution was diluted with water. It was used to treat radish by spraying, while untreated control plants were sprayed with water. Twenty-four hours after treatment, the plants were inoculated by spraying a solution of Alternaria brassicae spores (40000 spores/ml) originating from a 12-day culture. The radish plants were maintained at 18-20[deg]C in humid atmosphere. The effectiveness of product was evaluated relative to control plants after 7-8 days of incubation. Compounds (I) at 500 g/ha showed good to average (80%) effectiveness against the fungal pathogens. MECHANISM OF ACTION : None given.