HCID 86724410, compound → HCID 86724415, 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-(3,5-dimethylphenyl)indenide) (5.53 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 sticky solid. Yield 9.65 g (106%). 1H NMR(C6D6): δ 7.87 (d, 1H), 7.40 (s, 2H), 7.25 (m, 2H), 6.88 (s, 1H), 6.64 (s, 1H), 3.73, (s, 1H), 2.93 (br s, 1H), 2.23 (s, 6H), 1.93 (s, 3H), 1.92 (s, 3H), 1.84 (s, 3H), 1.82 (s, 3H), −0.07 (s, 3H), −0.36 (s, 3H).

Provenance & Evidence