Synthesis of some oxazolyl - pyrazolyl; 1,4-Dihydropyridinyl-pyrazolyl and 1,2,3,4-tetrahydro pyrimidinyl-pyrazolyl coumarins
作者:Mehul A. Patel、Dinker I. Brahmbhatt
DOI:10.1002/jhet.5570450416
日期:2008.7
pyrazol-3-yl] coumarins 4a-f; 3-[1-phenyl-4-(2,6-dimethyl-3,5-disubstituted-1,4-dihydropyridin-4-yl) pyrazol-3-yl] coumarins 5a-f and 3-[1-phenyl-4-(6-methyl-5-substituted-2-oxo-1,2,3,4-tetrahydropyrimidin-4-yl) pyrazol-3-yl] coumarins 6a-f have been synthesized utilizing Erlenmyer-Plochl reaction, Hantzsch reaction and Biginelli reaction respectively using 3-(1-phenyl-4-formyl-pyrazol-3-yl) coumarins 3a-c
各种3- [1-苯基-4-(2-取代的5-氧代-恶唑-4-亚苄基甲基)吡唑-3-基]香豆素4a-f ; 3- [1-苯基-4-(2,6-二甲基-3,5-二取代-1,4-二氢吡啶-4-基)吡唑-3-基]香豆素5a-f和3- [1-苯基-利用Eerlenmyer-Plochl反应,Hantzsch反应合成了4-(6-甲基-5-取代-2-氧代-1,2,3,4-四氢嘧啶-4-基)吡唑-3-基]香豆素6a-f。分别使用3-(1-苯基-4-甲酰基-吡唑-3-基)香豆素3a-c作为起始原料和Biginelli反应。