Methanesulfonic Acid → N-Fmoc-[phenyl(2,3,4-trioctadecanoxyphenyl)methyl]amine

Participants

Reaction Conditions

Reaction Steps

To 2,3,4-trioctadecanoxybenzhydrol (650 mg, 657 μmol) obtained in Example 1 were added toluene (10 ml) and Fmoc-NH2 (189 mg, 790 μmol), and the mixture was warmed to 50° C. in an oil bath. Methanesulfonic acid (6.4 μl, 99 μmol) was added, and the mixture was heated to 100° C. and stirred for 6 hr. After confirmation of disappearance of a benzhydrol type anchor, the mixture was cooled to room temperature. Toluene (5 ml) and 5% aqueous sodium hydrogen carbonate (10 ml) were added and the mixture was stirred. After partitioning, the organic layer was further washed with water (10 ml×2). The organic layer was evaporated under reduced pressure, and the residue was washed with methanol (10 ml) to give N-Fmoc-[phenyl(2,3,4-trioctadecanoxyphenyl)methyl]amine (788 mg, yield 98%).

Provenance & Evidence