725-92-8Relevant articles and documents
Wong,Brown
, p. 402,404 (1955)
New series of γ-pyrone based podands: Synthesis, characterization and study of their application in acetate salts cation trapping for nucleophilic substitution reactions
Teimuri-Mofrad, Reza,Aghaiepour, Alireza,Rahimpour, Keshvar
, p. 121 - 132 (2019/04/17)
Dialkyl 4-oxo-4H-pyran-2,6-dicarboxylates are synthesized via esterification of chelidonic acid or via intramolecular cyclization of dialkyl-2,4,6-trioxoheptanedioates. Reaction of the dialkyl 4-oxo-4H-pyran-2,6-dicarboxylates with a variety of glycol monoalkyl ethers produces a series of new podands in good yields. To demonstrate the use of these podands in cation trapping, nucleophilic substitution reactions are carried out with various acetate salts. The results indicate that the cation diameter’s compatibility with binding site leads to the best yield of reaction.
The chemistry of the highly reactive 2,6-bis(bromomethyl)-4-pyrone
Loewe,Braetter,Weber,Luger,Buddrus
, p. 365 - 370 (2007/10/03)
Under basic conditions 2,6-bis(bromomethyl)-4-pyrone 8 reacts with tetraethylene glycol to yield the unexpected macrocycle 9, which is related to the antibiotic Kjellmanianone 10. We propose that this ring transformation proceeds via the cyclopropyl inter