17920-89-7Relevant academic research and scientific papers
Transport of sodium, potassium, calcium and magnesium ions through liquid membrane containing non-cyclic ionophores composed of furan units
Asrani, Loni,Sharma, Uma
, p. 176 - 177 (2007/10/02)
2,2-Difurylpropane (IB) and 2,5-bis(dimethylfurfuryl) furan (IIB) have been synthesized by the condensation of furan and acetone in ethanol in the presence of conc.HCl.These oligomers exhibit the ability to transport alkali and alkaline earth metal ions through chloroform membrane and are selective for sodium and magnesium ions.Transport of alkali metal ions is relatively more facile than that of alkaline earth cations.Selectivity for Na+/K+ is reduced when a mixture of cations is used.These carriers are highly selective for the pair Na+/Mg2+ compared to the pair K+/Ca2+.
Syntheses of Tetraoxaquaterene Derivatives
Tanaka, Sanae,Tomokuni, Hidehiko
, p. 991 - 994 (2007/10/02)
Several new dimethyl and tetramethyl tetraoxaquaterenes, 3d and 3e, have been prepared in order to synthesize the oxygen analogues of porphyrin.The reaction between furan and a ketone using an acidic catalyst gave the cyclic tetramer, tetraquaterene, and oligomers.On the other hand, in the case of furan and the aldehyde, only linear oligomers were isolated.The condensation of furan-containing dimers with carbonyl compounds, both ketone and aldehyde, except formaldehyde, gave the tetraoxaquaterene.In the case of formaldehyde, the yield of cyclic tetramer was neglijable.
