L-glufosinate derivative, composition comprising same, preparation method therefor and use thereof

A method for preparing a compound of Formula (I),

• wherein the method comprises reacting a compound of Formula (III) with ROH,
• wherein:
• Y is —OR1, —NH2, —NHR2, or —N(R2)(R3);
• R is H, substituted or unsubstituted alkyl having 1-6 carbon atoms, substituted or unsubstituted alkenyl having 2-6 carbon atoms, substituted or unsubstituted alkynyl having 2-6 carbon atoms, substituted or unsubstituted cycloalkyl having 3-10 carbon atoms, substituted or unsubstituted heterocyclyl having 2-10 carbon atoms, substituted or unsubstituted aryl having 6-20 carbon atoms, substituted or unsubstituted aralkyl having 6-20 carbon atoms, or substituted or unsubstituted heteroaryl having 2-10 carbon atoms;
• preferably, R is H or substituted or unsubstituted alkyl having 1 to 6 carbon atoms;
• more preferably, R is H, methyl or ethyl;
• R1, R2 and R3 are each independently substituted or unsubstituted alkyl having 1-6 carbon atoms, substituted or unsubstituted alkenyl having 2-6 carbon atoms, substituted or unsubstituted alkynyl having 2-6 carbon atoms, substituted or unsubstituted cycloalkyl having 3-10 carbon atoms, substituted or unsubstituted heterocyclyl having 2-10 carbon atoms, substituted or unsubstituted aryl having 6-20 carbon atoms, substituted or unsubstituted aralkyl having 6-20 carbon atoms, or substituted or unsubstituted heteroaryl having 2-10 carbon atoms, or —Si(R4)(R5)(R6);
• R4, R5 and R6 are each independently substituted or unsubstituted alkyl having 1-6 carbon atoms, or substituted or unsubstituted aryl having 6-20 carbon atoms;
• substituents for the alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, aralkyl, and heteroaryl groups are each independently halogen, carboxyl, amino, nitro, cyano, alkyl having 1-6 carbon atoms, aryl having 6-10 carbon atoms, or cycloalkyl having 3-10 carbon atoms.