Pyrrole and pyridine derivatives via 1,7-cyclization of butenynyl nitrones the product-determining influence of substituents on the deactivation pathway of the oxaza-cycloallene intermediates
Pyrrole and pyridine derivatives via 1,7-cyclization of butenynyl nitrones the product-determining influence of substituents on the deactivation pathway of the oxaza-cycloallene intermediates