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Some ring expansion?ring contraction reactions of ethyl 4-chloromethyl-1,2,3,4-tetrahydro-6-methyl-2-oxopyrimidine-5-carboxylate

✍ Scribed by Ashby, John; Griffiths, D.

Book ID
120591550
Publisher
The Royal Society of Chemistry
Year
1974
Tongue
English
Weight
169 KB
Volume
15
Category
Article
ISSN
0022-4936

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## Abstract The __Biginelli__ reaction between an aromatic aldehyde, ethyl acetoacetate, and urea – catalyzed by polymer‐supported, re‐usable, room‐temperature ionic liquids (RTIL) such as **1b** – was shown to efficiently proceed in glacial AcOH at 100Β° to afford the corresponding pyrimidine‐5‐car