Synthesis of unsymmetrical methylene derivatives of benzopyran-4-ones from mannich bases
作者:Mauro Mazzei、Ramona Dondero、Alessandro Balbi、Gian Maria Bonora
DOI:10.1002/jhet.5570380232
日期:2001.3
The formation of methylene-bis derivatives of benzopyran-4-ones from their Mannichbases was studied. On these grounds, unsymmetrical methylene derivatives have been synthesized by reacting Mannichbases of benzopyran-4-ones with structurally related compounds lacking the dialkylaminomethyl group.