| abstract |
(57) [Summary] [Object] To provide a furobenzopyran derivative which is extremely safe for useful crops such as rice, soybean, and cotton, and has excellent herbicidal activity, and a herbicide containing the derivative as an active ingredient. [Structure] A furobenzopyran derivative represented by the general formula (I). [In the formula, R 1 represents a lower alkyl group, R 2 represents a lower alkyl group, a lower alkoxy group, a halogen atom or a halogen-substituted lower alkyl group, and R 3 represents a lower alkyl group, a lower alkoxy group, a halogen atom, a halogen-substituted group. Represents a lower alkyl group, a phenoxy group or a benzyloxy group, R 4 represents a hydrogen atom or a lower alkyl group, R 5 represents a cyano group, a nitro group, a phenyl group, a group —S (O) qR 6 or the like, m is an integer of 0 to 4, and n is 0 to 0. 2 represents an integer of 1 to 3, and when m, n and p are 2 or more, R 2 , R 3 and R 5 may be the same or different. ] |