Propargyl methanesulfonate ester
But-2-yn-1-yl 4-methylbenzenesulfonate
Propargyl p-toluenesulfonate
But-3-yn-1-yl quinoline-8-sulfonate
But-3-yn-1-yl 4-chlorobenzenesulfonate
Pent-4-yn-1-yl 4-methylbenzenesulfonate
