Bis(5-alkyl-2-furyl)(2-carboxyphenyl)methanes for the Synthesis of Tetracyclic Isochromone Derivatives
作者:Andrey V. Gutnov、Vladimir T. Abaev、Alexander V. Butin、Artem S. Dmitriev
DOI:10.1021/jo016030h
日期:2001.12.1
Effective Synthesis of 3-(2-Furyl)Phthalides Under the Friedel–Crafts Reaction Conditions
作者:P. M. Shpuntov、V. A. Shcherbinin、A. V. Butin
DOI:10.1007/s10593-015-1649-x
日期:2015.3
Furan ring opening - isocoumarine ring closure: A recyclization reaction of 2-carboxyaryldifurylmethanes
作者:Vladimir T. Abaev、Artem S. Dmitriev、Sergey A. Podelyakin、Alexander V. Butin、Andrey V. Gutnov
DOI:10.1002/jhet.5570430510
日期:2006.9
A general method for the synthesis of isocoumarine derivatives has been developed. Bis(5-R-2-furyl)methylbenzoic acids (R = methyl, ethyl) underwent recyclization and subsequent cyclization into tetracyclic isochromene-1-one derivatives under treatment with hydrogen chloride in methanol. It has been shown that intermediate 4-(5-R-furan-2-yl)-3-(3-oxo-3-R-propyl)-isochromene-1-ones can be obtained selectively