+++heterocycles и Liebigs Annalen der Chemie

[Aryl]

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A Novel One Pot Synthesis of 1,3,7-Triaryl-1,2,3,4-tetrahydro-4-oxo-5-phenyl-2-thioxo-5H-pyrano[2,3-d]pyrimidines
Vinod Kumar Ahluwalia,* Rachna Aggarwal, Mohammad Alauddin, Gurpreet Gill, and Chandra Has Khanduri
Heteocycles Volume 31, Issue 1 1990, Pages 129-137. DOI не нашёл

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http://data.heterocycles.jp/FMPro?-db=journalred.fp5&-format=/w7/JournalDetail.html&-lay=data&-Token.0=aka&-Token.3=COM-89-5194&-recid=44518&-Script=citation&-find

On the cyclization to the elusive amino-4H-pyran ring some new facts
Nazario Martín-León, Margarita Quinteiro, Carlos Seoane, José L. Soto
Liebigs Annalen der Chemie Volume 1990 Issue 1, Pages 101 - 104

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http://dx.doi.org/10.1002/jlac.199019900115

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[Aryl]

Спасибо Большое