“…The solvents were evaporated, and the residue was purified by column chromatography on silica gel (hexane/ethyl acetate, 6:1) to give 10i (12.7 g, 51%) as a yellow oil: 1 H NMR (CDCl3) δ 1.18 (s, 3 H), 1.45 (s, 3 H), 1.69 (d, J ) 2 Hz, 3 H), 2.18 (m, 1 H), 2.39 (s, 3 H), 2.43 (m, 1 H), 2.69 (m, 1 H), 5.58 (m, 2 H), 7.41 (m, 2 H), 7.50 (s, 1 H); MS (EI) m/z 228 (M + ), 213 (M + -Me), 173 (100), 159, 115, 55. Compounds 10a-h and 10j-k were prepared in the same way from 4-methoxyindan-1-one (9a), 15 5-methoxyindan-1-one (9b), 6-methoxyindan-1-one (9c), 7-methoxyindan-1-one (9d), 16 6-fluoroindan-1-one (9e), 17 6-chloroindan-1-one (9f), 16 6-bromoindan-1-one (9g), 17,18 6-methylindan-1-one (9h), 19 6-fluoro-3,3-dimethylindan-1-one (9j), [12][13][14]17 and 6-methoxy-3,3-dimethylindan-1-one (9k), [12][13][14][15] respectively. Preparation of (R,S)-2-(2-Oxoethyl)-3,3,6-trimethyl-1indanone (11i) (Standard Procedure E).…”