hydrogenchloride in isopropyl alcohol

1: sodium polysulfide 2: sodium tetrahydroborate; methanol 3: triethylamine / ethyl acetate / 2.5 h / 20 - 50 °C 4: 1,3-dibromo-5,5-dimethyl-hydantoin / acetonitrile / 1 h / 50 °C 5: N,N-dimethyl-formamide / 6 h / 90 °C / |Inert atmosphere 6: hydrogenchloride / isopropyl alcohol View Scheme

1: sodium tetrahydroborate; methanol 2: triethylamine / ethyl acetate / 2.5 h / 20 - 50 °C 3: 1,3-dibromo-5,5-dimethyl-hydantoin / acetonitrile / 1 h / 50 °C 4: N,N-dimethyl-formamide / 6 h / 90 °C / |Inert atmosphere 5: hydrogenchloride / isopropyl alcohol View Scheme

1: triethylamine / ethyl acetate / 2.5 h / 20 - 50 °C 2: 1,3-dibromo-5,5-dimethyl-hydantoin / acetonitrile / 1 h / 50 °C 3: N,N-dimethyl-formamide / 6 h / 90 °C / |Inert atmosphere 4: hydrogenchloride / isopropyl alcohol View Scheme

1: 1,3-dibromo-5,5-dimethyl-hydantoin / acetonitrile / 1 h / 50 °C 2: N,N-dimethyl-formamide / 6 h / 90 °C / |Inert atmosphere 3: hydrogenchloride / isopropyl alcohol View Scheme

1: N,N-dimethyl-formamide / 6 h / 90 °C / |Inert atmosphere 2: hydrogenchloride / isopropyl alcohol View Scheme