1: 2,5-bis(methylthio)oxazole; PhZnCl With bis-triphenylphosphine-palladium(II) chloride in tetrahydrofuran T=23°C; 1.5 h; Inert atmosphere; 2: 3,4-dimethoxyphenyl zinc chloride With NiCl2((PPh3)P)2 in tetrahydrofuran T=65°C; 6 h; Inert atmosphere;