sodium hydroxide T=120°C;

1: With sulfur dioxide; cesium fluoride in acetonitrile T=20°C; 24 h; 2: With 1-(chloromethyl)-4-fluoro-1,4-diazoniabicyclo-[2.2.2]octane bis(tetrafluoroborate) in acetonitrile T=-40 - 20°C; 4 h; Further stages. Title compound not separated from byproducts.;

potassium hydroxide; N-benzyl-N,N,N-triethylammonium chloride in benzene T=30°C; 3 h; Yield given. Yields of byproduct given;