反应详情

温度

100 °C

Preparation of -(4,4,5, 5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester has been described [Tet. Lett. 41(19), 3705-3708, 2000]. The boronate ester (1.1 g, 3.6 mmol, 1.5 equiv) and [5-(4-bromo-phenyl)-oxazol-2-yl]-(3-chloro-phenyl)-amine (0.84 g, 2.4 mmol, 1.0 equiv) were dissolved in 12 mL DME and then charged with 3 mL of a 2M Na2CO3 solution. Pd(Ph3)4 on polystyrene resin (0.72 g, 0.072 mmol) was added, and the suspension was sparged with nitrogen for 10 min, then heated to 100° C. overnight. The reaction was then filtered to remove catalyst, and following solvent removal the product was triturated with hexanes and ether to afford the title compound: (M+H)+ 452.1.

1. customthe suspension was sparged with nitrogen for 10 min
2. filtrationThe reaction was then filtered
3. customto remove catalyst
4. customsolvent removal the product
5. customwas triturated with hexanes and ether