PROBLEM TO BE SOLVED: To provide a novel compound and a herbicide prepared using the same.SOLUTION: The present invention provides a ketone or oxime compound represented by formula (1) [B is B-1, B-2 or B-3 Q is O, NOR7 or the like m and n are an integer of 0-2 R6, R8a, R8b, R9a and R9b are H, halogen, alkyl, cycloalkyl and the like].SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】新規な化合物及びこれを用いる除草剤を提供。【解決手段】式(1)で表されるケトン若しくはオキシム化合物。[BはB-1、B-2又はB-3;QはO、NOR7等;m及びnは0~2の整数R6、R8a、R8b、R9a及びR9bはH、ハロゲン、アルキル、シクロアルキル等]【選択図】なし