| abstract |
The invention relates to a process for the preparation of certain thiazinones used in agriculture, e.g. can be used as fungicides. For example, to prepare 3- (4-chlorobenzyl) -tetrahydro-2- (3-pyridi) -4H-1,3-thiazin-4-one, 3-alpha- (4-chlorobenzylaniline) -alpha (3-pyridi ) methylthio! propionic acid reacted with N, N'-dicyclohexylcarbodiimide. By reacting 3- & alpha (2-cyclopentyl-1-methylethylaniline) -alpha- (3-pyridyl) -methylthio! Propionic acid with N, N'-dicyclohexylcarbodiimide, 3- (2-cyclopentyl-1-methylethyl) -tetrahydro is obtained -2- (3-pyridyl) -4H-1,3-thiazin-4-one. |