4,4,5,5-tetramethyl-2-(5-((tetrahydro-2H-pyran-2-yl)oxy)pent-2-yn-1-yl)-1,3,2-dioxaborolane

2-(2-溴乙氧基)四氢-2H-吡喃

2-丙炔-1-醇

四氢-2-(2-碘乙氧基)-2H-吡喃