کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5220348 1383385 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of 4-substituted pyrano[4,3-b]pyran-2,5-diones in an ionic liquid
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Synthesis of 4-substituted pyrano[4,3-b]pyran-2,5-diones in an ionic liquid
چکیده انگلیسی

The mildly basic ionic liquid N,N,N,N-tetramethylguanidinium triflate (TMGTf) was found to be a very effective solvent for the reaction between 4-hydroxy-6-methyl-2H-pyran-2-one, Meldrum's acid, and aldehydes to afford some novel pyrano[4,3-b]pyran-2,5-diones in high yields at room temperature. The stages, through which these reactions might proceed, depend largely on the nature of the aldehyde substrates. The reaction of aliphatic aldehydes has given access to some novel carboxylated products.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 68, Issue 32, 12 August 2012, Pages 6472-6476
نویسندگان
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