Journal of Heterocyclic Chemistry

Some reactions of 4H??pyrylium salts with tributylphosphine and with tertiary amines

GA Reynolds, CH Chen

Index: Reynolds, G. A.; Chen, C. H. Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 1235 - 1237

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Citation Number: 12

Abstract

Abstract The phosphonium salt from tributylphosphine and 2, 6-di (4-methoxyphenyl) pyrylium perchlorate (3) reacted with diisopropylethylamine in acetonitrile to give 2, 2′, 6, 6′-tetra (4-methoxyphenyl)-Δ 4.4′-bi-4H-pyran in quantitative yield. The reaction of 3 and other 4H-pyrylium salts with tertiary amines gave 4H-pyrans.

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