Reaction Steps
Odor: Marine, floral-aldehyde odor. -IR (film): ν=1502/1418/1466/1580 cm−1 (ν C═C, Ar), 1265/1304/1201 cm−1 (ν ring), 1050 cm−1 (ν C—O—C), 1741 cm−1 (ν C═O). -1H-NMR (CDCl3): δ=0.88 (2d, J=6.4 Hz, 6H, 4′-Me2), 1.18-1.24 (m, 2H, 3′-H2), 1.53-1.61 (m, 4H, 2′-H2, 4′-H), 2.50 (t, J=7.8 Hz, 2H, 1′-H2), 4.69 (d, J=8.0 Hz, 4H, 2-,4-H2), 6.78 (dd, J=8.0, 4.0 Hz, 1H, 8-H), 6.82 (d, J=4.0 Hz, 1H, 6-H), 6.90 (d, J=8.0 Hz, 1H, 9-H). -13C-NMR (CDCl3): δ=22.44 (2q, 4′-Me2), 27.74 (d, C-4′), 29.07 (t, C-2′), 35.14 (t, C-1′), 38.39 (t, C-3′), 75.35/75.63 . (2t, C-2,-4), 120.30/120.48 (2d, C-6,-9), 123.50 (d, C-8), 138.86 (s, C-7), 146.03/147.83 (2s, C-5a,-9a), 204.76 (s, C-3). -MS (EI): m/z (%)=77 (13) [C6H5+], 91 (8) [C7H7+], 135 (7) [M+-C5H11—C2H2O], 149 (16) [M+-C5H11—CO], 177 (100) [M+-C5H11], 191 (1) [M+-C4H9], 205 (3) [M+-C3H7], 248 (38) [M+].
