1: With trimethylsilyl trifluoromethanesulfonate in methanol; acetonitrile T=150°C; 0.25 h; Microwave irradiation; 2: With hydrogenchloride in tetrahydrofuran; methanol; water; acetonitrile T=50°C; Overall yield = 61 percent; Overall yield = 53 mg;

acetic acid 2 h; Heating;