Pyridone and pyridothione selective herbicides - esp. 5-substd.-3-phenyl-4(1H)pyridones and pyridothiones

摘要

3-Phenyl pyridones and pyridothiones of formula (I) and their acid addition salts are new (where X is 0 or S; r is 1-3C alkyl pt. substd. by halo, CN, carboxyl or methoxycarbobyl, 2-3C alkenyl, 2-3C alkynyl, 1-3C alkoxy, acetoxy, or dimethylamino; each R1 is halogen, 1-8C alkyl opt. substd. by halogen, or phenyl, CN or 1-3C alkoxy, 2-8C alkenyl or alkynyl (3pt. substd. by halogen), 3-6C cycloalyl, 4-6C cycloalkenyl, 4-8c cycloalkyl alkyl, 1-3C alkanoyloxy, 1-3C alkylsulphonyloxy, phenyl (opt. monosubstd. by halogen, 1-3C alkyl, 1-3C alkoxy or NO2), NO2, CN, carboxyl, OH, 1-3C alkoxycarbonyl, -OR3, -SR3, -SOR3 or -SO2R3; R3 is 1-12C alkyl (opt. substd. by halogen, phenyl CN, or 1-3C alkoxy), phenyl (opt. substd. by halogen, 1-3C alkyl, 1-3C alkoxy or NO2), 3-6C cycloalkyl, 4-8C cycloalkylakl, 2-12C alkenyl (opt. substd. by halogen), 2-12C alkynyl (3pt. substd. by halogen) such that R3 contains more than 12C; R2 is halogen, H, CN, 1-3C alkoxycarbonyl, 1-6C alkyl (op. substd. by halogen or 1-3C alkoxy), 2-6C alkenyl (opt. substd. by halogen or 1-3 C akoxy), 2-6C alkynyl, 3-6C Cycloalkyl (opt. substd. by halogen, 1-3C alkyl or 1-3C akoxy), 4-6C cycloalkenyl, 4-8 C cycloalkylalkyl,phenyl 1-3C alkyl, furyl, naphthyl, thienyl, -OR4, -SR4, -SOR4, SO2R4 or alkyl (opt. substd. by halogen), 2-3C alkenyl (opt. substd. by halogen), benzyl, phenyl (3pt. substd. by halogen, 1-3C alkyl or 1-3C alkoxy); each R5 is halogen, 1-8C alkyl (opt. substd. by halogen, phenyl, CN, or 1-3C alkoxy), 2-8C alkenyl (opt. substd. by halogen), 2-8C alkynyl (opt.substd. by halogen), 3-6C cycloalkyl, 4-6C cycloalkenyl, 4-8C cycloalkylalkyl, 1-3C alkanoyloxy, 1-3C alkylsulphonyloxy, phenyl (opt.substd. by halogen, 1-3C alkyl, 1-3C alkoxy, or NO2), NO2, CN, carboxyl, OH, 1-3C alkoxycarbonyl, -OR6, SR6, -SOR6 or SO2R6. R6 is 1-12C alkyl (opt.substd. by halogen, phenyl, CN, or 1-3C alkoxy), phenyl (opt.substd. by halogen, 1-3C alkyl, 1-3C alkoxy, or NO2), 3-6C cycloalkyl, 4-8C cycloalkylalkyl, 2-12 C alkenyl (opt. substd. by halogen), 2-12C alkynyl (opt. substd. by halogen), provided R6 does not contain over 12C; m and in are 0,1 or 2; when X is O, R is CH3; when R2 is unsubstd. phenyl, m is 1 or 2).