PURPOSE: To obtain a novel compound which is useful as a microbicidal agent for agricultural and horticultural purposes, particularly for controlling rice blast disease without chemical damage to useful crop plants.
CONSTITUTION: This compound is expressed by formula I [Q is formula II or the like (R1 is H, a 1-4C alkyl; R2 is H, a halogen; R3 is H, a halogen, nitro); R4, R5 are H, a 1-6C alkyl, phenyl], for example, 0-(1,3-dimethyl-pyrazol-5- ylcarbonyl)pinacolone oxime. The compound of formula I is obtained by reaction of a compound of formula III with a compound of the formula: Q-COL (L is an eliminating group) in a solvent such as dichloromethane in the presence of a base such as pyridine at 0-50°C. It is effective for controlling Diaporth citri, grape downy mildew, tomato late blight, peanut leaf spot and beet brown spot.
TAKEYAMA TOSHIAKI
SUZUKI HIROYUKI
YASUMI YOSHIAKI
WATANABE JUNICHI
NAKAJIMA YASUYUKI
OYA HIROSHI
SASABE SHIGERU
NISHIOKA MASANORI
FURUSATO TAKASHI
