Polyfuryl(aryl)alkanes and their derivatives. 11. Optimization of the conditions for the synthesis of 2-nitroaryldifurylmethanes and the nature of the side products

It was found that 2-nitroaryldifurylmethanes can be obtained with high yields as a result of the condensation of derivatives of 2-nitrobenzaldehyde and sylvane in dioxane in the presence of perchloric acid. The reaction of 6-nitroveratraldehyde and sylvane in benzene in the presence of trimethylsilyl chloride leads to the formation of the product from the condensation of the aryldifurylmethane with the initial aldehyde and also a derivative of fitful-2,1-benzisoxazole.For Communication 10, see 1]Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 168–174, February, 1996.