1: With tributyl-amine in xylene 8 h; Molecular sieveReflux; 2: With hydrogenchloride; tributyl-amine T=200°C; 4 h; 3: With water in tert-butyl methyl ether T=20°C;

1: With anhydrous iron chloride; tributyl-amine in toluene 2.5 h; Reflux; 2: With hydrogenchloride in tert-butyl methyl ether Product distribution / selectivity;