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Anil‐Synthese. 24. Mitteilung. über die Herstellung von Styryl‐ und Stilbenyl‐Derivaten des 1 H ‐Benzotriazols
Author(s) -
Siegrist Adolf Emil
Publication year - 1981
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19810640309
Subject(s) - chemistry , potassium hydroxide , dimethylformamide , medicinal chemistry , yield (engineering) , organic chemistry , materials science , solvent , metallurgy
Preparation of Styryl and Stilbenyl Derivatives of 1 H ‐Benzotriazoles 1‐( p ‐Tolyl)‐substituted 1 H ‐benzotriazoles react with anils of aromatic aldehydes in the presence of dimethylformamide and potassium hydroxide to yield the corresponding 1‐(styr‐4′‐yl)‐1 H ‐benzotriazoles and 1‐(stilben‐4′‐yl)‐1 H ‐benzotriazoles, respectively (‘anil synthesis’). Further, under the same reaction conditions, the Schiff 's bases derived from p ‐chloroaniline and 4‐(1′ H ‐benzotriazol‐1′‐yl)benzaldehydes give, with p ‐tolyl‐substituted heterocycles, the corresponding heterocyclic substituted stilbenyl derivatives.