Copper-Free Intramolecular Alkyne–Azide Cycloadditions Leading to Seven-Membered Heterocycles
摘要:
Treatment of alk-2-ynyl derivatives of enantiopure phenylglycidol with NaN(3) triggers a cascade reaction consisting of stereospecific and regioselective epoxide ring opening followed by intramolecular azide-alkyne cycloaddition under strictly metal-free conditions. This simple one-pot procedure allows a fast buildup of molecular complexity, generating a wide array of triazolooxazepinols, triazolodiazepinols, and triazolothiazepinols.
Copper-Free Intramolecular Alkyne–Azide Cycloadditions Leading to Seven-Membered Heterocycles
摘要:
Treatment of alk-2-ynyl derivatives of enantiopure phenylglycidol with NaN(3) triggers a cascade reaction consisting of stereospecific and regioselective epoxide ring opening followed by intramolecular azide-alkyne cycloaddition under strictly metal-free conditions. This simple one-pot procedure allows a fast buildup of molecular complexity, generating a wide array of triazolooxazepinols, triazolodiazepinols, and triazolothiazepinols.
Copper-Free Intramolecular Alkyne–Azide Cycloadditions Leading to Seven-Membered Heterocycles
作者:Míriam Sau、Carles Rodríguez-Escrich、Miquel A. Pericàs
DOI:10.1021/ol201869y
日期:2011.10.7
Treatment of alk-2-ynyl derivatives of enantiopure phenylglycidol with NaN(3) triggers a cascade reaction consisting of stereospecific and regioselective epoxide ring opening followed by intramolecular azide-alkyne cycloaddition under strictly metal-free conditions. This simple one-pot procedure allows a fast buildup of molecular complexity, generating a wide array of triazolooxazepinols, triazolodiazepinols, and triazolothiazepinols.