PYRIDYLPYRIMIDINE DERIVATIVE, ITS PRODUCTION AND PLANT BLIGHT CONTROLLING AGENT CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

摘要

NEW MATERIAL:The compound of formula I [R1 is 1-7C alkyl; R2 and R3 are H, lower alkyl or together form (CH2)n (n is 3-5); R4 is 1-7C alkyl, 3-7C cycloalkyl, lower alkoxyalkyl or lower alkylthioalkyl; R5 is H, halogen, lower alkyl or lower alkanoyl; R4 and R5 may together form (CH2)m (m is 3-5); R6 is H, lower alkoxy, lower alkenyloxy, lower alkynyloxy, lower alkylthio, etc.] and its salt. EXAMPLE:2-(6-n-Butyl-2-pyridyl)-4-methylpyrimidine. USE:A plant blight controlling agent. PREPARATION:The compound of formula I can be produced by reacting a pyridylpyrimidine derivative of formula II (R6' is H) or a picolineamidine derivative of formula III with a beta-oxoacetal derivative of formula IV (R8 is lower alkyl) in the presence of a base.