| 摘要 |
A process for producing an dioxoquinazoline of following formula (II): <IMAGE> (II) wherein R1 and R2 independently represent a hydrogen atom, a halogen atom, a nitro group, a lower alkyl group, an aralkyl group, an alkoxy group, an alkoxylcarbonyl group or a group represented by YNR3R4, wherein Y represents a direct bond, a lower alkylene group or a carbonyl group, and R3 and R4 independently represent a lower alkyl group or N, R3 and R4 may bond together to form a five- or six-membered heterocycle which comprises reacting an anthranylamide of formula (I): <IMAGE> (I) wherein X, R1 and R2 are as defined above.
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