1: chloroformic acid ethyl ester; phenylpropionic acid sodium salt in tetrahydrofuran T=20°C; 0.25 h; 2: n-Bu-ZnI With tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran T=70°C; Negishi-type cross-coupling; 14 h; Title compound not separated from byproducts;