Hydrochloric Acid → 2-Cycloheptylaminoethylfluorene

Participants

Reaction Steps

In dry tetrahydrofuran (30 ml) was dissolved 2-cycloheptylcarbamoylmethylfluorene (1.9 g) followed by dropwise addition of borane-methyl sulfide complex (1.8 ml) with ice-cooling. The mixture was then refluxed for 4 hrs, at the end of which time methanol (0.72 ml) was added with ice-cooling. The mixture was stirred at room temperature for 30 minutes, followed by addition of concentrated hydrochloric acid (1.8 ml) with ice-cooling. The mixture was refluxed again for 30 minutes. The reaction mixture was then cooled with ice and the resulting solid was recovered by filtration and washed with ether. The solid matter thus obtained was dissolved in chloroform and the solution was alkalinized with aqueous sodium hydroxide solution. The chloroform layer was taken and dried and the solvent was distilled off under reduced pressure to give 2-cycloheptylaminoethylfluorene (1.2 g).

Provenance & Evidence