Simple and efficient synthesis of 2,6-dialkyl-3,5-dialkoxycarbonyl-4-(3-aryl-1-phenyl-pyrazol-4-yl)pyridines using TPAP/NMO as a catalyst under mild conditions
作者:R. Murugan、K. Ramamoorthy、S. Sundarrajan、S. Ramakrishna
DOI:10.1016/j.tet.2011.02.040
日期:2011.4
Biologically important pyrazolylpyridines were synthesized in excellent yield by the oxidation of pyrazolyl 1,4-dihydropyridines (pyrazolyl 1,4-DHPs) using tetrapropylammonium perruthenate/N-methylmorpholine-N-oxide (TPAP/NMO) under mild conditions at 0 °C.
使用过氧化四丙基铵/ N-甲基吗啉-N-氧化物(TPAP / NMO)在0°C的条件下,通过吡唑基1,4-二氢吡啶(吡唑基1,4-DHPs)的氧化,以优异的产率合成了生物学上重要的吡唑基吡啶。