THE CONDENSATION OF FURAN WITH CARBONYL COMPOUNDS

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Abstract
A homologous series of substituted quaterenes has been synthesized by the condensation of 2,2-isopropylidenebis[5-(dimethylfurfuryl)furan] with keto acids and their esters. Substituted quaterenes containing chlorine have also been prepared. Only one out of the theoretically possible four geometrical isomeric quaterenes which could arise from the condensation of furan with butanone has been isolated. In all instances where more than one geometrical isomeric quaterene would be theoretically possible, only one has been isolated. Two new dinitro compounds have been prepared by the nitration of 2,2-difurylbutane and 3,3-difurylpentane.

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