boron trifluoride diethyl etherate; sodium cyanoborohydride in tetrahydrofuran 1 h; Ambient temperature;

boron trifluoride diethyl etherate; sodium cyanoborohydride in tetrahydrofuran 8 h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

3,5-dimethylpyrazolium fluorochromate(VI) T=20°C; 0.0666667 h;