The expected Michael adducts and spiroisoxazolines are obtained from the reaction between 3-methyl-4-nitro-5-styrylisoxazole and bis-enolisable ketones. Contrary to reported data, Michael adducts are obtained in good yields only when a substoichiometric amount of base is used, whereas spiroisoxazolines were obtained as the major product when the base is present in a large excess. © 2002 Elsevier Science Ltd. All rights reserved.
The reactivity of 3-methyl-4-nitro-5-stiyrylixoxazole with some bis-enolisable ketones / M.F.A. ADAMO; S. CHIMICHI; F. DE SIO; D. DONATI; P. SARTI-FANTONI. - In: TETRAHEDRON LETTERS. - ISSN 0040-4039. - STAMPA. - 43:(2002), pp. 4157-4160.
The reactivity of 3-methyl-4-nitro-5-stiyrylixoxazole with some bis-enolisable ketones
CHIMICHI, STEFANO;DE SIO, FRANCESCO;SARTI FANTONI, PIERO
2002
Abstract
The expected Michael adducts and spiroisoxazolines are obtained from the reaction between 3-methyl-4-nitro-5-styrylisoxazole and bis-enolisable ketones. Contrary to reported data, Michael adducts are obtained in good yields only when a substoichiometric amount of base is used, whereas spiroisoxazolines were obtained as the major product when the base is present in a large excess. © 2002 Elsevier Science Ltd. All rights reserved.
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