反应详情

One proceeds in an analogous manner to Example 4 except that 27 g of 2-(2',4',5'-trichloro-phenoxy)-propionic acid are reacted first with 12 g of pivaloyl chloride and thereafter with diethyl-ethoxy-magnesium malonate prepared from 17.6 g of diethyl malonate. The reaction mixture is worked up. Thus 37 g of the desired compound are obtained in the form of pale yellow crystals, yield 91%, mp.: 62°-66° C.