1.1: sodium hydrogencarbonate / water; ethanol; toluene / 0.25 h / |Inert atmosphere 1.2: 1 h / 120 °C / |Microwave irradiation; |Inert atmosphere 2.1: ammonium hydroxide; zinc / tetrahydrofuran / 5 h / |Reflux; |Inert atmosphere 3.1: hydrogenchloride / methanol / 1 h / |Inert atmosphere; |Reflux View Scheme

1: ammonium hydroxide; zinc / tetrahydrofuran / 5 h / |Reflux; |Inert atmosphere 2: hydrogenchloride / methanol / 1 h / |Inert atmosphere; |Reflux View Scheme

methanol; Pd-BaSO4 Hydrogenation;

1: aqueousdiazonium salt solution 2: palladium/BaSO4; methanol / Hydrogenation View Scheme