2,3-dihydrophenalen-1-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred mixture of 2,3-dihydro-phenalen-1-one (1.32 g, 7.24 mmol), hydroxylamine hydrochloride (0.85 g, 12.2 mmol) and water (6 ml) was added dropwise at 75° C. MeOH (7.5 ml) and afterwards a solution of sodium acetate (2.58 g, 19.0 mmol) in water (4 ml). Stirring was continued over a period of 1.5, h, water (20 ml) was added and after cooling (ice bath) the solid was collected by filtration. After drying in vacuo the crude product was dissolved in 3.5 N NH3 /MeOH (100 ml) and hydrogenated over Raney-Nickel (0.5 g, washed with MeOH) at RT for 17h. The catalyst was filtered off, the solution evaporated in vacuo and the residue purified by column chromatography on silica gel (dichloromethane/MeOH 9:1) to yield (RS)-2,3-dihydro-1H-phenalen-1-yl-amine (0.95 g) as a brown oil. was added dropwise at 75° C was added after cooling (ice bath) the solid was collected by filtration After drying in vacuo the crude product was dissolved in 3.5 N NH3 /MeOH (100 ml) and hydrogenated over Raney-Nickel (0.5 g, washed with MeOH) at RT for 17h The catalyst was filtered off the solution evaporated in vacuo the residue purified by column chromatography on silica gel (dichloromethane/MeOH 9:1)