| abstract |
Novel substituted chromone compounds which are intermediates for chromone compounds useful as bactericides and herbicides. Specifically, substituted chromone compounds represented by general formula (1) wherein R1 represents hydrogen, C¿1-6? alkyl, etc.; R?2¿ represents hydrogen or C¿1-6? alkyl; R?3¿ represents halogeno, etc.; R4 represents hydrogen, halogeno, etc.; R5 represents hydrogen, C¿1-6? alkyl, etc.; X represents oxygen or sulfur; and A represents nitro, etc. |