[EN] FUNGICIDAL OXADIAZOLES<br/>[FR] OXADIAZOLES À ACTIVITÉ FONGICIDE
申请人:FMC CORP
公开号:WO2018118781A1
公开(公告)日:2018-06-28
Disclosed are compounds of Formula 1, including all geometric and stereoisomers, tautomers, N-oxides, and salts thereof, wherein R1, A, and J are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling plant disease caused by a fungal pathogen comprising applying an effective amount of a compound or a composition of the invention.
I<sub>2</sub> mediated synthesis of 5-substituted-3-methyl/benzyl-1,3,4-oxadiazol-2(3H)-ones via sequential condensation/oxidative cyclization and rearrangement
A simple and efficient iodine-assisted protocol for the synthesis of 5-substituted-3-methyl/benzyl-1,3,4-oxadiazol-2(3H)-ones has been developed. The reaction involves a sequential condensation followed by tandem oxidative cyclization and rearrangement of readily available methyl/benzyl carbazates and aldehydes as starting substrates. The presence of iodine and base promotes intramolecular C–O bond