Pyridine → 4-(Triethylsilyl)but-3-yn-1-yl 4-methylbenzene-1-sulfonate

Beteiligte Stoffe

Reaktionsschritte

A solution of 4-(triethylsilyl)but-3-yn-1-ol (2 mL; 9.22 mmol), p-toluensulfonyl chloride (3.52 g; 18.44 mmol) and pyridine (1.49 mL; 18.44 mmol) in dichloromethane (30 mL) was stirred at room temperature for 3 days. The reaction mixture was then washed with a saturated solution of sodium hydrogen sulphate and brine. The organic layer was dried, concentrated under reduced pressure and the crude material was purified by flash chromatography on silica gel (eluent 2 to 20% ethyl acetate in heptane) to yield 3.20 g (quantitative yield) of 4-(triethylsilyl)but-3-ynyl 4-methylbenzenesulfonate as a yellow oil.

Herkunft & Nachweise