2-NITRO-5-(SUBSTITUTED PHENOXY)BENZOHYDROXIMATE DERIVATIVES AND THEIR USE AS HERBICIDE

摘要

A compound of the formula wherein R<1> represents a lower alkyl group, R<2> represents a hydrogen atom or a lower alkyl group, and Z represents a group of the formula -OR<3> or -SR<4> in which R<3> represents a lower alkenyl or alkynyl group which may be substituted by halogen, cyano or lower alkoxycarbonyl, and R<4> represents a lower alkyl group. The above compound is produced by (a) reacting an ester-forming derivative of a compound of the formula wherein R<1> and R<2> are as defined above, and Q represents an oxygen or sulfur atom, with a compound of formula Z-H (III) wherein Z is as defined above, or (b) reacting the compound of formula (II) with a compound of the formula R<3>X<1> or R<4>X<1> (IV) wherein R<3> and R<4> are as defined above, and X<1> represents a halogen atom, or (c) reacting a compound of the formula wherein R<2> and Z are as defined above, with a compound of the formula R<1>-X<2> (VI) wherein R<1> is as defined above, and X<2> represents an acid residue, or diazomethane. This compound is useful as a herbicide.