Photochemical three-component assembly of tri-substituted oxazoles through a carbenic phosphorus-nitrile hybrid ylide formation/trapping cascade
作者:Xingchen Ye、Huaijin Pan、Yong Huang、Jiean Chen、Zhaofeng Wang
DOI:10.1039/d4sc01355g
日期:2024.5.1
synthesis. We report a novel visible-light-induced three-component reaction for the construction of complex 2,4,5-trisubstituted oxazoles, which are valuable in medicinal chemistry, from simple and readily available iodonium-phosphonium hybrid ylides, carboxylic acids, and nitriles. This reaction features a carbenic phosphorus-nitrile hybrid ylide formation/trapping cascade, in which a photo-generated α-phosphonium
在有机合成中,利用普遍存在的化学原料在一次转化中构建复杂的分子骨架非常有吸引力。我们报告了一种新型可见光诱导的三组分反应,用于从简单且容易获得的碘鎓杂化叶立德、羧酸和腈构建复杂的2,4,5-三取代恶唑,这在药物化学中很有价值。该反应以碳磷-腈混合叶立德形成/捕获级联为特征,其中光生α-鏻卡宾充当序列触发器。这种无催化剂和无添加剂的转化表现出高效率和广泛的底物范围,可合成多种恶唑。