Browsing by Subject "1,3-benzodiazepines"
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1,3-dipolar character of 2-vinyl quinazoline 3-oxides; first and second generation cycloaddition products
(Royal Society of Chemistry (RSC), 2006-01-01)The reaction between the heteroaromatic N-oxides 1a, 1b and 1c with dimethyl acetylenedicarboxylate or methyl propiolate furnishes 1,3-benzodiazepines, the products of ring transformations of primarily formed cycloadducts. ...