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An ecofriendly approach to the synthesis of 2-imino- and 2-oxo-3-phenylsulfonyl-2H-chromenes

✍ Scribed by Tatiana A. Dias; M. Fernanda Proença

Book ID
116909766
Publisher
Elsevier Science
Year
2012
Tongue
French
Weight
380 KB
Volume
53
Category
Article
ISSN
0040-4039

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✍ Gašparová, Renata ;Koiš, Pavol ;Lácová, Margita ;Kováčová, Silvia ;Boháč, Andrej 📂 Article 📅 2013 🏛 Walter de Gruyter GmbH 🌐 English ⚖ 971 KB

## Abstract The key 3-(2-oxo-2H-chromen-3-yl)-2-oxo-2H,5H-pyrano[3,2-c]chromen-5-yl acetates 3 were synthesized in high yields by cyclocondensation of 4-oxo-4H-chromen-3-carbaldehydes 1 with coumarin-3-acetic acids 2 under mild conditions. The reaction pathway involves aldol condensation and subseq