1008103-69-2Relevant academic research and scientific papers
Multicomponent Synthesis of Novel 2- and 3-Substituted Dihydrobenzo[1,4]oxazepinones and Tetrahydrobenzo[1,4]diazepin-5-ones and their Conformational Analysis
Banfi, Luca,Basso, Andrea,Guanti, Giuseppe,Lecinska, Paulina,Riva, Renata,Rocca, Valeria
experimental part, p. 699 - 728 (2009/09/25)
By coupling an Ugi multicomponent condensation with a Mitsunobu reaction, a series of 2- and 3-substituted dihydrobenzo[1,4]oxazepinones and tetrahydrobenzo[1,4]diazepin-5-ones was synthesized in a very convergent manner. The strategy involves the use of substituted ethanolamines as amino components and of salicylic or N-methanesulphonyl anthranilic acid as carboxylic component. The general scope has been evaluated; in some cases better results have been obtained by reverting the order of the two reactions. A thorough conformational analysis on these products has been carried out through NMR, showing that in most cases a single conformation was strongly favoured.
