7-Chloro-2-ethyl-1H-indene → 2-Ethyl-7-phenyl-1H-indene

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Reaction Steps

A 5 L flask was equipped as in Example 3. 178 g 2-ethyl-7-chloroindene (1 mol), 1 L ether and 10.8 g Ni(dpp) (0.02 mol, 2 mol%) added, followed by 355 mL of 3.1M phenylmagnesium bromide in ether (1.1 mol, 10% excess). After quenching and work-up by the method described in Example 3, 176 g 2-ethyl-7-phenylindene (0.8 mol) was obtained by vacuum distillation at 140° C. in 80% yield.

Provenance & Evidence