反应详情

温度

60 °C

A mixture of 6-bromo-4-chloro-thieno[3,2-d]pyrimidine (10.0 mmol), (trimethylsilyl)acetylene (12.0 mmol), Pd(PhCN)2Cl2, (1.0 mmol), CuI (1.0 mmol) and TEA (2.0 mmol) in dry THF (60.0 mL) was flushed with dry N2 for several minutes and stirred at 60° C. for 30 minutes under an atmosphere of N2. The solvent was removed and the residue purified by flash column chromatography on silica gel to provide 4-chloro-6-trimethylsilanylethynyl-thieno[3,2-d]pyrimidine (compound 48.1) in 65% yield. EIMS (m/z): calcd. for C11H11ClN2SSi (M+)+H 266.01. found 266.00.

1. customwas flushed with dry N2 for several minutes
2. customThe solvent was removed
3. customthe residue purified by flash column chromatography on silica gel