Preparation method of cefditoren pivoxil cephalosporins intermediate

The invention discloses a synthesis method of a drug intermediate, and particularly relates to a preparation method of a cefditoren pivoxil cephalosporins intermediate. The preparation method comprises the step of reacting through phosphorus Ylide-Wittig reaction and hydrolysis reaction by using 7-phenylacetamide-3-chloromethylcephalosporanic acid p-methoxybenzyl ester to obtain cefditoren pivoxil cephalosporins. The preparation method is simple in process, safe, environment-friendly, high in yield, and suitable for industrialized production.