Ethanolamine → 1-Decyn-3-ol, 1-(trimethylsilyl)-

Participants

Reaction Steps

Dissolve B-(2-(trimethylsilyl)ethynyl)-9-borabicyclo[3.3.1]nonane.tetrahydrofuran complex (2.4 g, 8.3 mmol) in pentane (25 mL) and add octyladldehyde (1.3 mL, 8.3). Stir at room temperature for 40 minutes and evaporate the solvent under a positive pressure of nitrogen to give a yellow solid. Add ethyl ether (30mL) and methanol (336 μL, 8.3 mmol), cool to 0° C. and add, by dropwise addition, ethanolamine (0.5 mL, 8.3 mmol). Stir overnight, centrifuge the reaction mixture and separate the clear supernatant liquid. Wash the precipitate with pentane (2×25 mL) and combine the organic phase. Wash with water (2×25 mL) and dry (MgSO4). Evaporate the solvent in vacuo and purify by silica gel chromatography (19:1 hexane/ethyl acetate) to give the title compound as a clear liquid (1.71 g, 91%).

Provenance & Evidence