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Convergent Domino Knoevenagel Hetero-DielsAlder and Domino Oxidation Hetero-DielsAlder Reactions Encountered in an Unexpected Formation of Novel 5-Aryl-1H-pyrano[2,3-d]pyrimidine-2,4(3H,5H)-diones and 5-Aryl-2,3-dihydro-2-thioxo-1H-pyrano[2,3-d]pyrimidin-4(5H)-ones

✍ Scribed by Nace Zidar; Danijel Kikelj

Publisher: John Wiley and Sons
Year: 2011
Tongue: German
Weight: 202 KB
Volume: 94
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.201000325

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✦ Synopsis

Abstract

Convergent domino Knoevenagel hetero‐DielsAlder and domino oxidation hetero‐DielsAlder reactions, in which both diene and dienophile are formed under the same reaction conditions in situ, are described for the first time, and their application is demonstrated by a one‐pot synthesis of novel 5‐aryl‐1__H__‐pyrano[2,3‐d]pyrimidine‐2,4(3__H__,5__H__)‐diones and 5‐aryl‐2,3‐dihydro‐2‐thioxo‐1__H__‐pyrano[2,3‐d]pyrimidin‐4(5__H__)‐ones.

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