Patent ID: 6121476
Filing Date: 2000-09-19
Classification: C07C

Abstract:
A process for preparing a dithiocarbonimide derivative represented by the formula I: ##STR9## wherein R.sup.2, R.sup.3 and Z have the same meaning as defined below, which comprises reacting a keto-ester compound represented by the formula II: ##STR10## wherein R.sup.1 represents a C1-C6 alkyl group, with a dithiocarbamate compound represented by the formula III: ##STR11## wherein R.sup.2 and R.sup.3 are the same or different and represent each a hydrogen atom, a C1-C6 alkyl group, a halogen atom, a C1-C6 alkoxy group, a C1-C6 haloalkyl group or a C1-C6 haloalkoxy group; or R.sup.2 and R.sup.3 together represent a methylenedioxy group which may be substituted by a fluorine atom; and Z represents a group: CH or a nitrogen atom, in the presence of a base to give a keto-ester derivative represented by the formula IV: ##STR12## wherein R.sup.1, R.sup.2, R.sup.3 and Z have the same meaning as defined above, then reacting said keto-ester derivative with methylamine to give a keto-amide derivative represented by the formula V: ##STR13## wherein R.sup.2, R.sup.3 and Z have the same meaning as defined above, and then reacting said keto-amide derivative with O-methyl-hydroxylamine.