Triethylamine → HCID 86687859, compound

Participants

Reaction Steps

To a solution of 4-(chloromethyl)benzoyl chloride (2.00 g; 10.6 mmol) in THF (30 ml) are added 5-hexyn-1-ol (1.18 ml; 10.6 mmol) and DMAP (0.1 g; 0.82 mmol). The mixture is refluxed overnight with stirring. BOC-4-aminopiperidine (2.33 g; 11.6 mmol) and triethylamine (3.24 ml; 23.3 mmol) are added and the mixture is refluxed for further 3 h. Ethyl acetate (200 ml) and water (50 ml) are added. The organic layer is separated, washed with water and with brine and evaporated to dryness. The residue is purified by silica gel column chromatography (gradient cyclohexane/ethyl acetate 8:2→2:8) to yield 5-Hexyn-1-yl 4-[(4-{[(tertbutoxy)carbonyl]amino}piperidin-1-yl)methyl]-benzoate.

Provenance & Evidence