反应详情

To a solution of N-(3-(2-oxa-6-azaspiro[3.3]heptan-6-yl)phenyl)-5-chlorothiazolo[5,4-d]pyrimidin-7-amine (160 mg, 0.5 mmol) and methyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (145 mg, 0.55 mmol) in 9 mL of 1,4-dioxane and 1 mL of water was added Na2CO3 (159 mg, 1.5 mmol) followed by Pd(PPh3)4 (58 mg) under nitrogen with stirring. The mixture was refluxed for 15 hours under nitrogen. After cooled, the solvent was evaporated by rotary evaporation. The residue was poured into water and extracted with EtOAc (3×10 mL). The organic layer was washed with brine and dried over Na2SO4. After filtration and concentration, the residue was purified by column chromatography on silica gel eluting with (petroleum ether EtOAc=1:1) to give methyl 3-(7-(3-(2-oxa-6-azaspiro[3.3]heptan-6-yl)phenylamino)thiazolo[5,4-d]pyrimidin-5-yl)benzoate (70 mg, 30%). LC-MS: 460 [M+H]+, tR=1.74 min.

1. temperatureThe mixture was refluxed for 15 hours under nitrogen
2. temperatureAfter cooled
3. customthe solvent was evaporated by rotary evaporation
4. additionThe residue was poured into water
5. extractionextracted with EtOAc (3×10 mL)
6. washThe organic layer was washed with brine
7. dry with materialdried over Na2SO4
8. filtrationAfter filtration and concentration
9. customthe residue was purified by column chromatography on silica gel eluting with (petroleum ether EtOAc=1:1)