1: 3-chloro-2-fluoro-5-(trifluoro-methyl)pyridine; (R)-(+)-2-(4-hydroxyphenoxy)propionic acid With potassium phosphate; tetra-(n-butyl)ammonium iodide in N,N-dimethyl-formamide T=50 - 60°C; 2 h; 2: With 2,4,6-trichloro-1,3,5-triazine in N,N-dimethyl-formamide T=5 - 25°C; 1.16667 h; 3: methanol in N,N-dimethyl-formamide