High Throughput Synthesis of Extended Pyrazolo[3,4-d]dihydropyrimidines
摘要:
Thirteen 5-hetarylaminopyrazoles were synthesized in 62-93% yield through the arylation of 1-isopropyl- and 1-phenyl-5-aminopyrazoles with electrophilic hetarylhalides under optimized conditions. Condensation of 5-hetarylaminopyrazoles with carbonyl compounds facilitated by AcOH or Me3SiCl furnished 23 pyrazolo[3,4-d]dihydropyrimidines in 69-86% yield. The target compounds were isolated through simple crystallization. The scope and limitation of the method are discussed.
High Throughput Synthesis of Extended Pyrazolo[3,4-<i>d</i>]dihydropyrimidines
作者:Sergey V. Ryabukhin、Dmitry S. Granat、Andrey S. Plaskon、Alexander N. Shivanyuk、Andrey A. Tolmachev、Yulian M. Volovenko
DOI:10.1021/co300063x
日期:2012.8.13
Thirteen 5-hetarylaminopyrazoles were synthesized in 62-93% yield through the arylation of 1-isopropyl- and 1-phenyl-5-aminopyrazoles with electrophilic hetarylhalides under optimized conditions. Condensation of 5-hetarylaminopyrazoles with carbonyl compounds facilitated by AcOH or Me3SiCl furnished 23 pyrazolo[3,4-d]dihydropyrimidines in 69-86% yield. The target compounds were isolated through simple crystallization. The scope and limitation of the method are discussed.