potassium phosphate; t-Bu Brett Phos; water; palladium diacetate in tert-butyl alcohol T=110°C; 1.5 h; Inert atmosphere;

1: 3-(2-furoyl)amino-pyridine-2-phosphonic acid diethyl ester With lithium aluminium tetrahydride in diethyl ether T=0 - 20°C; 2: N,N-dimethyl-formamide dimethyl acetal T=50°C; 168 h; Further stages. Title compound not separated from byproducts.;

benzene