1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester → 6-(1-Ethyl-1H-pyrazol-4-yl)-3-imidazo[1,2-a]pyridin-6-ylmethyl-imidazo[1,2-b]pyridazine

Participants

Reaction Steps

The title compound was prepared in analogy to Example 9 using chloro-3-imidazo[1,2-a]pyridin-6-ylmethyl-imidazo[1,2-b]pyridazine (Example 74) instead of (rac)-(6-chloro-imidazo[1,2-b]pyridazin-3-yl)-imidazo[1,2-a]pyridin-6-yl-methanol (Stage 9.1) and 1-ethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole instead of 1-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole (tR 2.88 min (conditions 3), MH+=344.1).

Provenance & Evidence