Synthesis of a novel resorcin[4]arene–glucose conjugate and its catalysis of the CuAAC reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles in water
作者:Ali A. Husain、Kirpal S. Bisht
DOI:10.1039/c9ra00972h
日期:——
transfer catalyst for the CuAAC in water as a green approach for the synthesis of 1,4-disubstituted 1,2,3-triazole species. The catalytic utility of RG (1 mol%) was demonstrated in a multicomponent one-pot CuAAC for various azido/alkyne substrates. The RG acts as a molecular host and a micro-reactor resulting in the 1,4-disubstituted 1,2,3-triazoles in excellent yield.
A method for the synthesis of etherified 3-(1H-1,2,3-triazol-1-yl)phenyl iodides from 1,4-disubstituted 1,2,3-triazoles under metal-free conditions has been developed. In the presence of ArI(OAc)2, a range of 1,2,3-triazole substrates that contain a hydroxy group underwent a direct O–H arylation and C–H iodination to give functionalized 1,2,3-triazoles in good to excellent yields.
已经开发了在无金属条件下由1,4-二取代的1,2,3-三唑合成醚化的3-(1 H -1,2,3-三唑-1-基)苯基碘化物的方法。在存在ArI(OAc)2的情况下,对一系列包含羟基的1,2,3-三唑底物进行直接的O–H芳基化和C–H碘化处理,可得到功能化的1,2,3-三唑达到优异的产量。
The construction of fully decorated 1,2,3-triazoles has been disclosed via a bimetallic relay-catalyzed cascade process combining azide–alkyne cycloaddition, C(sp2)–H functionalization of 1,2,3-triazoles and isocyanide insertion.
1,2,3-Triazole based chemosensor is synthesized using “Click chemistry” approach. Addition of fluoride ion “turn-on” the fluorescence response of probe.
使用“点击化学”方法合成了基于1,2,3-三唑的化学传感器。添加氟离子可以“开启”探针的荧光响应。
Metal-free selective aryl C–H formylation co-controlled by 1,2,3-triazole and hydroxyl using DMSO as formyl source
Abstract A facile and efficientmethod for direct C–H formylation of phenolated 1,4-disubstituted 1,2,3-triazoles using DMSO as the formyl source has been developed. The reaction proceeded smoothly under metal-free conditions with good functional group tolerance and high selectivity co-controlled by the triazole ring and hydroxyl group. Graphic AbstractSynopsis Direct C–H formylation of phenolated