Synthese de l'acide (dihydroxy-5,7 dioxo-9,25ethyl-16 heptamethyl-2,4,6,12,18,22,24 methoxy-3) hexacosatriene-12,16,20oique par copulation de 3 synthons希罗
Synthese de l'acide (dihydroxy-5,7 dioxo-9,25ethyl-16 heptamethyl-2,4,6,12,18,22,24 methoxy-3) hexacosatriene-12,16,20oique par copulation de 3 synthons希罗
A new electrochemical zinc metal activation method based on the cathodic reduction of a catalytic amount of zinc bromide in the presence of a zinc anode is described. This procedure is applied to the coupling of α-bromoesters with nitriles, and affords β-ketoesters in good yield.