Abnormal Fischer indolization and its related compounds. XXII. Fischer indolization of ethyl pyruvate 2-(2-chloro- and 2,6-dichlorophenyl)methylhydrazones.
在二氧化硅模板的存在下,通过纳米浇铸技术合成了一种多孔的交联聚(亚乙基胺)-聚磺酰胺(PEA-PSA)作为一种新型的有机载体体系。本文证明了将CuI纳米粒子固定在孔内(PEA-PSA @ CuI)可以方便地回收和再循环这些纳米粒子。使用FT-IR光谱,FE-SEM,EDX,TGA,XRD,TEM,BET,XPS,WDX,1 H NMR和ICP-OES技术确认了多孔PEA-PSA和PEA-PSA @ CuI纳米复合材料的存在。PEA-PSA @ CuI与Ag(I)/ K 2 S 2 O 8一起作为p的N-芳基化中可重复使用的协同催化剂-氧化剂体系而实现-甲苯磺酰胺与温和的取代羧酸。因此,已经开发了由铜和银催化的新型脱羧交叉偶联。芳族,仲和叔脂肪酸与对甲苯磺酰胺经过高效脱羧过程,得到相应的产物。该方法为从容易负担的底物上灵活合成磺酰胺提供了一种实用的方法。该催化剂是高度可重复使用和有效的,特别是在所需产物的时间和产率方面。
Construction of Benzenesulfonamide Derivatives via Copper and Visible Light-induced Azides and S(O)2–H Coupling
作者:Zhipeng Liang、Ya-Nan Wu、Yang Wang
DOI:10.3390/molecules27175539
日期:——
phenylsulfinic acid derivatives and aryl azides by dual copper and visible light catalysis. In this efficient and mild pathway, the reaction produces sulfonamide compounds under redox-neutral condition, which is mechanistically different from the nitrogen nucleophilic substitution reactions. Significantly, this transformation intends to utilize the property of visible light-induced azides to generate triplet