| abstract |
A compound represented by the formula (1) which is usefulnas an agricultural fungicide or an intermediate thereof cannbe obtained by reacting a compound of the general formula (2)nwith a compound of the general formula (3) in the presence ofnan acid and reducing the resulted reaction mixture.n nwherein, each of R 1 to R 4 and R 1a to R 4a independently representsna hydrogen atom or an alkyl group, and R represents an alkylngroup, alkoxy group, phenyl group or 5-membered or 6-memberednheterocyclic group. |