通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
通过钯(0)催化的三重多米诺工艺开发了一种高效,高度区域选择性和立体选择性的合成四取代烯烃的方案。它涉及通过双碳钯和通过2-降冰片芳基炔基联芳基/杂芳基与降冰片烯的双碳键合和CH活化形成三个新的CC键。该方法实际上很简单,具有广泛的底物范围,并且可以耐受各种取代基。带有9 H-吡咯并[1,2- a ]吲哚基序的产物显示出令人感兴趣的固态荧光特性,因此形成了一类新的聚集诱导发射(AIE)荧光团。
α-Carbonyl Radicals from <i>N</i>-Enoxybenzotriazoles: De Novo Synthesis of 9-Phenanthrols
作者:Quynh H. Nguyen、Tae-Woong Um、Seunghoon Shin
DOI:10.1021/acs.orglett.2c03356
日期:2022.11.18
donors or alcoholic solvents led to α-carbonylradicals. The utility of the α-carbonylradicals was demonstrated in intramolecular tandemcyclization and in the synthesis of 9-phenanthrols and their analogues. The mechanistic experiments suggested that quenching of the reactive benzotriazolyl radical by the alcohol was accompanied by the formation of an α-hydroxy radical that mediated hydrogen atom transfer
A highly modular approach to fused 1,2,3-triazoles has been developed featuring a one-pot procedure combining copper(I) catalyzed azide-alkyne cycloaddition and palladium-catalyzed C-H bond functionalization. A class of structurally unique heterocycles was synthesized in good yields.