3-Tolylboronic acid → 5-(3-Methyl-benzylidene)-10,11-dihydro-5H-dibenzo[a,d]cycloheptene

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Reaction Steps

Combine 5-bromomethylene-10,11-dihydro-5H-dibenzo[a,d]cycloheptene (0.5 g, 1.75 mmol) and m-tolylboronic acid (0.238 g, 1.75 mmol) using procedures essentially as described in Example 219, below. Pass through a plug of silica gel equilibrated with hexanes. Concentrate the filtrate to give the title product: MS (m/e): 296 (M+); HPLC (ISO80-10M)) t=17.78 min (95%).

Provenance & Evidence