HCID 86724410, compound → HCID 86724417, compound

Participants

Reaction Steps

To a solution of dimethyl(2,3,4,5-tetramethylcyclopenta-2,4-dien-1-yl)silyl trifluoromethanesulfonate (Compound C, 7.50 g, 22.8 mmol, 1.00 eq.) in ether (25 mL) at −35° C. was added lithium (1-(2-naphthyl)indenide) (6.05 g, 24.4 mmol, 1.07 eq.). The reaction was stirred for 19 hours, and was then evaporated under vacuum. The residue was extracted with pentane (40 mL, then 2×20 mL) and the extract was filtered. The resulting solution was evaporated under vacuum to give a foam. The foam was extracted with pentane and the extracts were filtered to give a solution. The solution was evaporated under vacuum to give thick oil. Yield 9.44 g (98%). 1H NMR(C6D6): δ 8.20 (s, 1H), 7.84 (d, 1H), 7.76 (m, 2H), 7.70 (m, 2H) 7.51 (d, 1H), 7.27 (m, 4H), 6.71 (s, 1H), 3.75, (s, 1H), 2.94 (br s, 1H), 1.95 (s, 3H), 1.93 (s, 3H), 1.84 (s, 3H), 1.82 (s, 3H), −0.04 (s, 3H), −0.34 (s, 3H).

Provenance & Evidence