10-Undecynoic acid → 10-Undecynoyl-OSu

Beteiligte Stoffe

Reaktionsschritte

To a solution of 10-undecynoic acid (0.40 g, 2.2 mmol) in CH3CN (10 mL) was added O—(N-succinimidyl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (0.99 g, 3.29 mmol). After stirring for 2 min at RT, the reaction was quenched with 1% AcOH and diluted with CHCl3 (150 mL). The organic solution was then extracted with 1% AcOH (10 mL), rinsed with H2O (2×40 mL), then dried over Na2SO4. The solution was then decanted and concentrated. A quantitative yield was assumed and the material was taken on directly to the next step. TLC (10% MeOH/CHCl3) Rf=0.90, UV active.

Herkunft & Nachweise