Solvent-free synthesis of monastrol derivatives catalyzed by NaHSO4
作者:Qingfang Cheng、Qifa Wang、Xingyou Xu、Mingjie Ruan、Hailun Yao、Xujie Yang
DOI:10.1002/jhet.368
日期:——
Monastrolderivatives were synthesized by environment‐friendly three component condensation reaction of salicylaldehyde analogues, β‐ketoester, and urea or thiourea under solvent‐free conditions with NaHSO4 as catalyst in high yields. The reactions formed two different monastrol products, 4‐(2‐hydroxyphenyl)pyrimidines 4 and 9‐ methyl‐ 11‐oxo(or thioxo)‐8‐oxa‐10,12‐diazatricyclotrideca derivatives