Benzenesulfonamide → HCID 71179013, compound

Participants

Reaction Steps

1.7 g (5.0 mmol) of Boc-Glu (OBzl)-OH, 1.03 g (5.0 mmol) of dicyclohexylcarbodiimide and 611 mg (5.0 mmol) of 4-(dimethylamino)pyridine were suspended in 20 ml of methylene chloride, to which 866 mg (5.0 mmol) of benzenesulfonamide was added. Following agitation at room temperature overnight, extraction was performed with ethyl acetate/1N hydrochloric acid. The organic layer was washed with saturated saline and then added with sodium sulfate for drying. The organic layer was subjected to vacuum condensation. To the resulting residue, 100 mg of 10% Pd/C and 20 ml of methanol were added and stirred overnight in a hydrogen atmosphere under a normal pressure. After filtrating the catalyst away, the solvent was distilled away and purification step A was used to obtain a crude product of the title compound.

Provenance & Evidence