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Solvent free reaction under microwave irradiation: A new procedure for Eu+3 — Catalyzed Michael addition of 1,3-dicarbonyl compounds

✍ Scribed by Annunziata Soriente; Aldo Spinella; Margherita De Rosa; Manuela Giordano; Arrigo Scettri


Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
109 KB
Volume
38
Category
Article
ISSN
0040-4039

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✦ Synopsis


C-C bond formation via Michael addition is achieved in high yields and short times by employing catalytic amounts ¢ff EuCI 3 in dry media under microwave irradiation.


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## Abstract Reaction of ophenylenediamine with β‐diketones or β‐ketoesters in water formed 2‐substituted benzimi‐dazoles. Reaction of 3,3′‐diaminobenzidine gave similar results. Under microwave irradiation conditions solvent‐free reaction of __o__‐phenylenediamine with β‐ketoesters afforded l,5‐ben