A novel synthesis of pyrano[2,3-d]pyrimidine derivatives
Tetrahedron
Volume 51, Issue 20, 15 May 1995, Pages 5901-5912
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http://dx.doi.org/10.1016/0040-4020(95)00258-ASynthesis and antimicrobial activities of novel naphtho[2,1-b]pyran, pyrano[2,3-d]pyrimidine and pyrano[3,2-e][1,2,4]triazolo[2,3-c]-pyrimidine derivatives
Il Farmaco
Volume 56, Issue 12, December 2001, Pages 965-973
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http://dx.doi.org/10.1016/S0014-827X(01)01168-5Intramolecular hetero-Diels–Alder reaction of 1-oxa-1,3-butadienes with terminal acetylenes in aqueous media using CuI
Tetrahedron
Volume 64, Issue 48, 24 November 2008, Pages 10924-10929
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http://dx.doi.org/10.1016/j.tet.2008.08.056