Boron trifluoride → 3-Allyloxymethyl-7-amino-ceph-3-eme-4-carboxylic acid

Beteiligte Stoffe

Reaktionsschritte

Using the procedure of Step A of Example 8, 27.2 g of 7-amino-cephalosporanic acid, 170 ml of the etherate of boron trifluoride, 136 ml of allyl alcohol and 115 ml of triethylamine were reacted and the 9 g of raw product was purified successively twice with hot hydrochloric acid and ammonium hydroxide to obtain 4.72 g of 3-allyloxymethyl-7-amino-ceph-3-eme-4-carboxylic acid.

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