HCID 22023067, compound → HCID 131734810, compound

Participants

Reaction Steps

To a green solution of dimethyl(2,3,4,5-tetramethylcyclopenta-2,4-dien-1-yl)silyl trifluoromethanesulfonate (7.50 g, 22.8 mmol, 1.00 eq.) in ether (25 mL) at −35° C. was added lithium (2-ethyl-4-phenylindenide) (5.53 g, 24.4 mmol, 1.07 equiv.) in portions to give a hazy yellow solution near room temperature. The reaction was stirred for 20 hours, then evaporated under vacuum, leaving a light yellow semi-solid. The residue was extracted with pentane (3×40 mL) and the extract was filtered to give a yellow solution and pale yellow-white solid. The solution was evaporated under vacuum to yield thick, yellow oil. Yield 9.28 g (102%). 1H NMR(C6D6): δ 7.64 (d, 2H), 7.43 (d, 1H), 7.35 (d, 1H), 7.29 (t, 2H), 7.19 (t, 2H), 6.95 (s, 1H), 3.74, (s, 1H), 3.17 (br s, 1H), 2.46 (m, 1H), 2.32 (m, 1H), 1.95 (s, 3H), 1.89 (s, 3H), 1.82 (s, 6H), 1.05 (t, 3H), −0.22 (s, 6H).

Provenance & Evidence