SEARCH Articles Figures Tables Azlactone Azlactone synthesis Azlactonization Erlenmeyer Erlenmeyer azlactone Erlenmeyer azlactone synthesi Erlenmeyer azlactone synthesis Erlenmeyer synthesis Erlenmeyer-Plochl Erlenmeyer-Plochl azlactone synthesis Erlenmeyer-Plochl azlactone synthesis