“…NMR, IR and analysis data for 2-(1-phenyl-2-propynyl)furan (4a), 2-methyl-5-(1-phenyl-2-propynyl)furan (4b), 2-methyl-5-(1-phenyl-2-heptynyl)furan (4c), 2-(1,3-diphenylprop-2-ynyl)furan (4d) and 2-(1,3-diphenylprop-2-ynyl)-5-methylfuran (4e) match well with those previously reported. [5] See yields in Table 1. corresponding propargyl alcohol (132 mg of 1a, 188 mg of 1d, 208 mg of 1e) and 1 mL of 2-propyn-1-ol, 3-butyn-1-ol or 2-propen-1-ol were added. After heating overnight at 60 8C, the solvent was removed under vacuum and the residue extracted with 2 5 mL of Et 2 O. Purification of the product was carried out by column chromatography (silica, pentane), giving the corresponding propargyl ether as yellow oils.…”