作者:Vattoly J. Majo、Jaya Prabhakaran、J. John Mann、J. S. Dileep Kumar
DOI:10.1002/adsc.200202191
日期:2003.5
An efficient palladium-catalyzed synthesis of 3-arylpyrazolo[1,5-a]pyrimidines has been investigated. The key step in the synthesis is a Suzuki biaryl coupling of 3-bromo-2,5-dimethyl-7-aminopyrazolo[1,5-a]pyrimidines with arylboronic acids to provide 3-arylpyrazolo[1,5-a]pyrimidines in moderate to good yield. The synthetic utility of this methodology has been demonstrated by a concise and convergent
已经研究了3-芳基吡唑并[1,5- a ]嘧啶的钯的有效催化合成。合成中的关键步骤是将3-溴-2,5-二甲基-7-氨基吡唑并[1,5- a ]嘧啶与芳基硼酸进行铃木联芳基偶合,以提供3-芳基吡唑并[1,5- a ]嘧啶。中等至良好的产量。这种方法的合成效用已通过R121920的简洁和收敛合成得到了证明,R121920是一种有效的CRHR 1拮抗剂,最近正在接受临床评估。