I2/CuO-catalyzed tandem cyclization strategy for one-pot synthesis of substituted 2-aminothiozole from easily available aromatic ketones/α,β-unsaturated ketones and thiourea
作者:Yan-Ping Zhu、Jing-Jing Yuan、Qin Zhao、Mi Lian、Qing-He Gao、Mei-Cai Liu、Yan Yang、An-Xin Wu
DOI:10.1016/j.tet.2011.10.074
日期:2012.1
A concise and efficient one-pot process from easily available methyl ketones/unsaturated methyl ketones and thiourea was developed for the synthesis of 2-aminothiazoles under the media of I2/CuO. The method can highly stereoselectivity obtain the E-isomers of 4-ethenyl-2-aminothiazoles (5a–f). All these target molecules were characterized by NMR, HRMS and IR spectra. Furthermore, the target compounds
开发了一种由易得的甲基酮/不饱和甲基酮和硫脲组成的简洁高效的一锅法,用于在I 2 / CuO介质下合成2-氨基噻唑。该方法可以高度立体选择性地获得4-乙烯基-2-氨基噻唑的电子异构体(5a–f)。所有这些目标分子均通过NMR,HRMS和IR光谱进行了表征。此外,通过X射线晶体学分析进一步确定目标化合物3c和5b。