| abstract |
(57) [Summary] (Correction) [Constitution] The following formula (I) [In the formula, X represents a hydrogen atom or a halogen atom, and R 1 and R 2 together form a 5- or 6-membered heterocycle containing heteroatoms with the carbon atom to which they are attached, these rings optionally being lower alkylcarbonyl, lower alkoxycarbonyl or substituted. Optionally substituted with an aralkyloxycarbonyl group. Y represents a hydrogen atom, a hydroxy group, a lower alkoxy group, a lower alkenyloxy group, or a lower alkynyloxy group. ] The pyrimidine derivative represented by these, and the herbicide which makes it an active ingredient. [Effect] The above-mentioned pyrimidine derivative exhibits extremely excellent herbicidal activity and has high safety against certain crops. |