Lawesson's reagent promoted deoxygenation of azlactones for the syntheses of 2,4-disubstituted thiazoles
作者:Gaofeng Yin、Xiaodong Wang、Yuqing Wang、Tao Shi、Yaofu Zeng、Yuying Wang、Xue Peng、Zhen Wang
DOI:10.1039/d2ob01939f
日期:——
Azlactones and thiazoles are common structural motifs and possess diverse applications. A new method for the efficient and straightforward syntheses of 2,4-disubstituted thiazoles from azlactones has been developed. The reaction proceeded via deoxygenation of azlactones by Lawesson's reagent without metal or external additives. A variety of 2,4-disubstituted thiazoles were synthesized with up to 92%
吖内酯和噻唑是常见的结构基序,具有多种应用。开发了一种从吖内酯高效直接合成 2,4-二取代噻唑的新方法。在没有金属或外部添加剂的情况下,通过Lawesson 试剂对二氢唑酮进行脱氧来进行反应。合成了多种 2,4-二取代噻唑,收率高达 92%。此外,克级合成也证明了这种方法的重要性。