2,5-Dibromopyridine → 5-{4-[2-[4-(5-Bromo-pyridin-2-yl)-benzyl]-4-(2,4-dichloro-phenyl)-imidazol-1-yl]-phenyl}-1,1-dioxo-2-(2-trimethylsilanyl-ethoxymethyl)-[1,2,5]thiadiazolidin-3-one

Participants

Reaction Steps

5-(4-{4-(2,4-Dichloro-phenyl)-2-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzyl]-imidazol-1-yl}-phenyl)-1,1-dioxo-2-(2-trimethylsilanyl-ethoxymethyl)-[1,2,5]thiadiazolidin-3-one (154 mg, 0.2 mmol) was treated as described in general procedure G using 2,5-dibromopyridine (95 mg, 0.4 mmol) to give 5-{-4-[2-[4-(5-bromo-pyridin-2-yl)-benzyl]-4-(2,4-dichloro-phenyl)-imidazol-1-yl]-phenyl}-1,1-dioxo-2-(2-trimethylsilanyl-ethoxymethyl)-[1,2,5]thiadiazolidin-3-one, which was again treated as described in general procedure G using cyclohexen-1-ylboronic acid (51 mg, 0.4 mmol) to give 5-{-4-[2-[4-(5-cyclohex-1-enyl-pyridin-2-yl)-benzyl]-4-(2,4-dichloro-phenyl)-imidazol-1-yl]-phenyl}-1,1-dioxo-2-(2-trimethylsilanyl-ethoxymethyl)-[1,2,5]thiadiazolidin-3-one.

Provenance & Evidence