反応 #3748775
関連文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08759366B2
反応条件: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
実験手順: To a solution of 2,4-dichloropyrimidine (71 mg, 0.476 mmol) in dioxane (4 mL) and sodium carbonate (2M in water, 0.25 mL, 0.5 mmol) were added (3E)-2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)but-3-en-2-ol (100 mg, 0.476 mmol) and tetrakis triphenylphosphine palladium(0) (55 mg, 0.048 mmol). The solution was degassed by bubbling nitrogen gas and heated to 90° C. for 2 hr. The solution was diluted with EtOAc, washed with brine, dried with MgSO4, filtered, and concentrated to dryness. The residue was purified by flash chromatography on silica gel (0-100% EtOAc/hexanes) to afford (3E)-4-(2-chloropyrimidin-4-yl)-2-methylbut-3-en-2-ol as a colorless oil. MS ESI: [M+H]+ m/z 199.1. 1H NMR (500 MHz, CDCl3) δ 8.52 (d, J=5.1, 1H) 7.24 (d, J=15.6, 1H) 7.12 (d, J=5.1, 1H) 6.60 (d, J=15.6, 1H); 1.22 (s, 6H). The solution was degassed by bubbling nitrogen gas The solution was diluted with EtOAc washed with brine dried with MgSO4 filtered concentrated to dryness The residue was purified by flash chromatography on silica gel (0-100% EtOAc/hexanes)
ソース ID: ord-b8245dda30574070a2d40f02df856aac