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Condensation reactions of a comenaldehyde derivative
Author(s) -
Looker James H.,
Shaneyfelt Duane L.,
Halfar Wayne
Publication year - 1979
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.5570160638
Subject(s) - chemistry , pyran , malonic acid , cyanoacetamide , hydroxymethyl , condensation , ether , ethyl acetoacetate , derivative (finance) , ethyl cyanoacetate , organic chemistry , medicinal chemistry , malononitrile , catalysis , physics , financial economics , economics , thermodynamics
Abstract Condensation reactions of comenaldehyde methyl ether (I) with malonic acid, ethyl cyanoacetate, and cyanoacetamide to give β‐(5‐methoxy‐4 H ‐pyran‐4‐on‐2‐yl)acrylic acid (II), ethyl 2‐cyano‐3‐(5‐methoxy‐4 H ‐pyran‐4‐on‐2‐yl)propenoate (III), and 2‐cyano‐3‐(5‐methoxy‐4 H ‐pyran‐4‐on‐2‐yl)propenamide (IV), respectively, are described. Ultraviolet absorption spectra for 2‐hydroxymethyl‐5‐methoxy‐4 H ‐pyran‐4‐one, I and II are presented.