反应详情

温度

90 °C

Argon was passed through a mixture of 3-pyridineboronic acid (187 mg, 1.53 mmol) and Na2CO3 (408 mg, 3.84 mmol) in water ethanol (water 3.74 ml, ethanol 14.96 ml) at stirring at 90° C. for 30 min and cooled to 80° C. 4-Iodo-2-nitro-1-(phenylsulfonyl)-benzene 4(3) (734 mg, 1.9 mmol) was added to the reaction mixture in argon current, inert gas was passed for another 10 min, then bis-triphenylphosphinepalladium dichloride (34 mg) was added and argon was passed for additional 5 min. The reaction mixture was stirred for 2 h at 85° C. in argon atmosphere, then, cooled, water was added, and precipitated solid was filtered off. The reaction product was extracted from mother liquor with CH2Cl2, organic layer was dried over Na2SO4, filtered and evaporated to dryness. The residue was suspended in CH2Cl2, filtered off, mother liquor was evaporated, the residue washed with diethyl ether, it gave 460 mg (70.5%) of 3-(3-nitro-4-(phenylsulfonyl)phenyl)pyridine 5(1).

1. temperaturecooled to 80° C
2. waitinert gas was passed for another 10 min
3. waitargon was passed for additional 5 min
4. stirringThe reaction mixture was stirred for 2 h at 85° C. in argon atmosphere
5. temperaturecooled
6. customprecipitated solid
7. filtrationwas filtered off
8. extractionThe reaction product was extracted from mother liquor with CH2Cl2, organic layer
9. dry with materialwas dried over Na2SO4
10. filtrationfiltered
11. customevaporated to dryness
12. filtrationfiltered off
13. custommother liquor was evaporated
14. washthe residue washed with diethyl ether, it