2-Methylbenzenesulfonic acid hydrate → HCID 67189722, compound

Participants

Reaction Steps

A solution of toluenesulfonic acid monohydrate (199.4 mg, 1.0 mmol) in absolute EtOH (1.0 mL) was added to a solution of (2S)-2-(tert-butoxycarbonylamino)-1-(N-butyl-N-(2-(trimethylsilyl)ethoxycarbonyl)amino)-3-cyclohexylpropane (468.5 mg, 1.03 mmol) in Et2O (10 mL). This solution was placed in a flask on a rotary evaporator and the Et2O was removed at rt. The flask was then lowered into the water bath (temperature: 60° C.) and the selective removal of the Boc group proceeded concurrently with removal of the remainder of solvent to afford (2S)-2-amino-1-(N-butyl-N-(2-(trimethylsilyl)ethoxycarbonyl)amino)-3-cyclohexylpropane (556.7 mg, 98%) as a white solid.

Provenance & Evidence