Figure 6. HPLC spectra of racemic 8 and the product (R)-N-(prop-2-yn-1-yl)-2, 3-dihydro-1H-inden-1-amine ((R)-8).

The analysis was performed on a chiral OJ-H column (4.6 mm × 250 mm, DAICEL CHIRAL TECHNOLOGIES CO.LTD) with a mixture of hexane and isopropanol (0.5% ethanolamine) (9:1) as the eluent at 0.8 mL/min of flow rate and the column temperature being controlled at 30 °C.