Carbonate buffer NAD(1+), L-lactate dehydrogenase (L-LDH), 0.5 V;

1: 1-[4-(trifluoromethyl)phenyl]ethan-1-one With lithium hexamethyldisilazane in diethyl ether T=-70 - 20°C; 17.1 h; 2: ethanol; lithium pyruvate With hydroxylamine hydrochloride in diethyl ether 20 h; Heating / reflux;