Pyridyl-substituted thiazolidine and 1,3-thiazine derivatives, processes for their preparation, agricultural compositions containing said derivatives and methods for regulating plant growth and protecting plants from fungi.

摘要

Novel Pyridyl substituted thiazolidine and 1,3-thiazine derivatives having utility as plant fungicides, and terrestrial and aquatic plant growth regulators, with the formula <CHEM> wherein R is C3-C10alkyl, C3-C8-cycloalkyl, methallyl, phenyl, halophenyl, trifluoromethylphenyl, benzyl, methoxybenzyl, methylbenzyl, halobenzyl, dimethylaminoethyl, methylcyclohexyl, C3-C8cycloalkyl(C1-C3)alkyl, alpha -methylbenzyl, 2-thiazolyl, nitrophenyl, phenoxyphenyl, (tetrahydro-2-furanyl)-methyl, haloanlyl, trifluoromethylthiophenyl, methylthiophenyl, 2-norbornyl, furfuryl, 2-(1-methoxypropyl), methoxyphenyl, fluoro(C1-C2)alkoxyphenyl, 3-4-(methylenedioxy)phenyl, xlyl, biphenylyl, tolyl, or halotolyl; X is oxygen or sulfur; <CHEM> R<1> is hydrogen, methyl, or -S(C1-C6alkyl); R<2> is hydrogen, C1-C6alkyl, or -S(C1-C6alkyl); R<3> is hydrogen or methyl; R<4> is hydrogen or C1-C6alkyl; and R<5> is hydrogen or methyl. Methods for their preparation are described, e.g. 4-chloroaniline was reacted with 3-pyridine carboxaldehyde and the reaction mixture was reacted with thiolactic acid to give 3-(4-chlorophenyl)-5 -methyl-2-(3-pyridyl)-4-thiazolidinone.