NEW 2-PHEMOXYPYRIMIDINE DERIVATIVES AND PROCESS FOR PREPARATION THEREOF

摘要

New 2-phenoxy pyrimidine derivatives of formula (I) are prepared by reacting the cpd. of formula (II) and the cpd. of formula (III) in the presence of a base and solvent at room temp.-120 deg.C for 2-24 hrs.. The base is sodium hydride, potassium hydride, sodium carbonate, or potassium carbonate, and pref. its amt. is 1-2 mole w.r.t. 1 mole of the cpd. (II). The solvent is tetrahydro furan, 1-4-dioxane, dimethylform amide, dimethylacete amide or dimethyl sulfoxide. In the formulas, R1 is phenoxy, phenulthionyl anilino, 3,4,5,6-tyetrahydrophthalimido or phthalimido that can be substd. with C1-3 alkyl; R2 is C1-3 alkyl or C1-3 alkoxy; n is 0 or 1; X is Cl, methylsulfonyl or benzyl sulfonyl. The obtd. derivs. are useful as herbicide.