| abstract |
(57) [Summary] [Structure] General formula [I] [Wherein R 1 and R 2 are an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group, and R 3 is a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, R 4 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, or CONHR 5 (R 5 represents an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group or a heterocyclic group), X Represents NH or an oxygen atom] and a method for producing the same. [Effect] It is useful as an intermediate raw material for agricultural medicine, pigments and dyes, or as a fluorescent pigment. |