Diisopropylethylamine → HCID 54338434, compound

Participants

Reaction Steps

To a stirred solution of 2-[9-(methylsulfonyl)-β-carbolin-3-yl]-alanine methylester (0.5 g, 1.4 mmol) in THF (10 mL) was added 2-adamantyloxycarbonyl chloride (345 rag, 1.7 mmol) and the solution was treated with diisopropyl ethylamine (219 mg, 1.7 mmol) in THF (5 mL). The reaction mixture was stirred for 4 hours at room temperature, evaporated in vacuum and partitioned between ethyl acetate (100 mL) and water (50 mL). The organic layer was separated,washed successively with 7.5% citric acid solution (50 mL), 8% NaHCO3 solution (50 mL) and then dried over Na2SO4. The solvent was evaporated in vacuum and N-(2-adamantyloxy-carbonyl)-2-[9-(methylsulfonyl)-β-carbolin-3-yl]-alanine methylester was isolated as a yellow oil which solidified upon drying(0.73 g, 97.7%).

Provenance & Evidence