Microorganisms are commonly used to transform chemicals to chiral compounds. Pseudomonas cepacia 1813, Pseudomonas st......

Four pyrylium salts, (2,6-diphenyl-4-arylpyrylium tetrafluoroborate, aryl =C6Hs, 4-MeO C6H4, 4-Me2NC6H4, 4-NO2C6H4) were......