1.1: methanol / 10 h / |Reflux 2.1: magnesium sulphate heptahydrate / dichloromethane; methanol 2.2: 0.05 h / 100 °C / 1551.49 - 2585.81 Torr / |Microwave irradiation View Scheme

pyridine hydrochloride 0.5 h; Heating;