Primary aliph. nitro compds. RCH2NO2 (R = Me, Et, n-Bu) condense with substituted alkenes, such as norbornene, Me acrylate, styrene, cyclopentene, or Et vinyl ether, to give the corresponding 4,5-dihydroisoxazoles under copper(II) acetate catalysis in the presence of tertiary amines. Apparently nitrile oxides are not intermediates, as no furoxans are detected in these reactions
4,5-Dihydroisoxazoles by copper(II)-catalysed condensation of primary nitroalkanes with dipolarophiles / L. Cecchi; F. De Sarlo; F. Machetti. - In: SYNLETT. - ISSN 0936-5214. - STAMPA. - --:(2007), pp. 2451-2453. [10.1055/s-2007-986629]
4,5-Dihydroisoxazoles by copper(II)-catalysed condensation of primary nitroalkanes with dipolarophiles
DE SARLO, FRANCESCO;MACHETTI, FABRIZIO
2007
Abstract
Primary aliph. nitro compds. RCH2NO2 (R = Me, Et, n-Bu) condense with substituted alkenes, such as norbornene, Me acrylate, styrene, cyclopentene, or Et vinyl ether, to give the corresponding 4,5-dihydroisoxazoles under copper(II) acetate catalysis in the presence of tertiary amines. Apparently nitrile oxides are not intermediates, as no furoxans are detected in these reactions
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