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ChemInform Abstract: A One-Pot Preparation of 5-Oxo 2,4-Disubstituted 2,5-Dihydro-1H-imidazol-2-carboxylates from α-Bromo Esters.

✍ Scribed by Dariusz Ciez; Jan Svetlik


Publisher
John Wiley and Sons
Year
2011
Weight
29 KB
Volume
42
Category
Article
ISSN
0931-7597

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ChemInform Abstract: A Convenient Proced
✍ A. COVARRUBIAS-ZUNIGA; L. A. MALDONADO; J. DIAZ-DOMINGUEZ 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 2 views

A Convenient Procedure for the Synthesis of 4,6-Disubstituted 2-Oxo-2H-pyran-5-carboxylic Esters. -The Michael addition products of β-ketoester anions of (I) with acetylenic esters (II) readily cyclize under basic reaction conditions to give 2H-pyran-2-ones (III) (8 examples). -(COVARRUBIAS-ZUNIGA,