1: triethylamine / N,N-dimethyl-formamide / 9 h / 20 °C 2: ((3aS)-3,3-bis(3,5-dimethylphenyl)-1-(2-(trifluoromethyl)phenyl)hexahydro-1H-pyrrolo[1,2-c][1,3,2]oxazaborol-7-ium-7-yl)tribromoaluminate / dichloromethane / 5.5 h / -75 °C / Inert atmosphere; Irradiation View Scheme

N-bromosuccinmide; dibenzoyl peroxide in tetrachloromethane 8 h; Reflux;

hydrogenchloride in ethanol 24 h; Ambient temperature;

1: phosphoric acid; sulfuric acid; water / 13 h / 160 °C 2: selenium(IV) oxide / anhydrous xylene / 16 h / 100 °C / Reflux 3: sodium tetrahydroborate / methanol / 15 h / 0 - 20 °C 4: triethylamine / dichloromethane / 0 °C 5: lithium bromide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

1: sodium tetrahydroborate / methanol / 15 h / 0 - 20 °C 2: triethylamine / dichloromethane / 0 °C 3: lithium bromide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

1: triethylamine / dichloromethane / 0 °C 2: lithium bromide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

1: sodium ethanolate / ethanol / Reflux 2: phosphoric acid; sulfuric acid; water / 13 h / 160 °C 3: selenium(IV) oxide / anhydrous xylene / 16 h / 100 °C / Reflux 4: sodium tetrahydroborate / methanol / 15 h / 0 - 20 °C 5: triethylamine / dichloromethane / 0 °C 6: lithium bromide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

1: AlCl3, aluminium chloride / nitrobenzene / 3.5 h / 100 - 125 °C 2: selenium(IV) oxide / anhydrous xylene / 16 h / 100 °C / Reflux 3: sodium tetrahydroborate / methanol / 15 h / 0 - 20 °C 4: triethylamine / dichloromethane / 0 °C 5: lithium bromide / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

bromine; acetic acid