103496-11-3Relevant academic research and scientific papers
Chemistry of Cumulenes, 7. Synthesis of Derivatives of 1,2,3,4-Pentatetraene-1,5-dicarboxylic Acid Derivatives via Wittig Reaction with 1-H-Allene-1,3-dicarboxylic Monoester Chlorides
Nader, Franz W.,Brecht, Angelika,Kreisz, Siegfried
, p. 1208 - 1216 (2007/10/02)
The 1-H-allene-1,3-dicarboxylic monoester chlorides 13a/b as precursors of derivatives of the 1,2,3-butatrienone can be transformed to 1-tert-butyl-5-phenyl-1,2,3,4-pentatetraene-1,5-dicarboxylic diesters 15a-d via Wittig carbonyl olefination.Cleavage of the tert-butoxy group in 15c allowed access to the stable, crystalline 15e, the first derivative of pentatetraenecarboxylic acid.
