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Synthesis and spectroscopic studies of 5‐arylidene‐3‐substituted tetramic acids as possible substrates for catalytic asymmetric hydrogenation
Author(s) -
Athanasellis Giorgos,
Gavrielatos Efstathios,
IgglessiMarkopoulou Olga
Publication year - 2001
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570380527
Subject(s) - chemistry , catalysis , nuclear magnetic resonance spectroscopy , organic chemistry , spectroscopy , catalytic hydrogenation , stereochemistry , acid catalysis , physics , quantum mechanics
A new series of 5‐arylidene‐3‐substituted tetramic acids 6–19 have been synthesized by a condensation reaction of 3‐butanoyl tetramic acid 3 , 3‐ethoxycarbonyl tetramic acid 4 and 3 ‐acetyl tetramic acid 5 with a variety of substituted benzaldehydes. The structures of the isolated compounds 6–19 have been elucidated using FT‐IR, 1 H and 13 C‐NMR spectroscopy, FAB‐MS spectroscopy as well as elemental analyses.