sodium tetrahydroborate; zinc(II) chloride in diethylene glycol dimethyl ether 5 h; Reflux;

1: 1,2,4,5-tetrafluoro-3-(methoxymethyl)benzene With n-butyllithium in diethyl ether T=-78°C; 1.33333 h; Inert atmosphere; 2: carbon dioxide in diethyl ether T=-60 - 20°C; Inert atmosphere;