Cheap thiamine hydrochloride as efficient catalyst for synthesis of 4H-benzo[b]pyrans in aqueous ethanol
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-016-2843-x
Abstract: Preparation of pharmaceutically active 2-amino-4H-pyran derivatives has been achieved using cheap thiamine hydrochloride as catalyst. A wide range of aromatic aldehydes easily undergo condensation with malononitrile and several kinds of 1,3-cyclohexanedione under mild condition to… read more here.
Keywords: catalyst; cheap thiamine; hydrochloride efficient; thiamine hydrochloride ... See more keywords