HCID 86724410, compound → HCID 86724420, 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 (4,7-dimethyl-1-phenylindenide) (5.53 g, 24.4 mmol, 1.07 eq.). The reaction was stirred for 25 hours, and was then evaporated under vacuum. The residue was extracted with pentane (3×40 mL) and the extract was filtered. The resulting solution was evaporated under vacuum to give a thick oil. Yield 9.07 g (100%). 1H NMR(C6D6): δ 7.41 (d, 2H), 7.19 (m, 2H), 6.97 (s, 3H), 6.45 (d, 1H), 3.78, (s, 1H), 2.86 (br s, 1H), 2.30 (s, 3H), 2.13 (s, 3H), 1.96 (s, 3H), 1.89 (s, 3H), 1.78 (s, 3H), 1.77 (s, 3H), −0.04 (s, 3H), −0.32 (s, 3H).

Provenance & Evidence