Porous Organic Polymer Supported Nano Ruthenium Catalysts for Cascade Aromatization of Quinoxalin-2(1<i>H</i>)-one and C–H Annulation with Alkynes
作者:Ziwei Huang、Jiayi Xian、Shaohuan Lv、Shanshan Xu、Jiefang Li、Feng Xie、Bin Li
DOI:10.1021/acs.orglett.3c03056
日期:2023.11.10
Selective C–H annulation with alkynes is one of the most useful tools to synthesize heterocycles. Herein, we developed novel porous organic polymers supported ruthenium (POPs-Ru) as highly efficient catalysts for cascade aromatization of quinoxalin-2(1H)-one and C–H annulation with alkynes. Both terminal and internal alkynes were successfully transferred to furo[2,3-b]quinoxalinederivatives with good
作者:Yu. S. Andreichikov、R. F. Saraeva、A. L. Fridman
DOI:10.1007/bf00569172
日期:1973.2
Synthesis of [2,3-b]thieno- and furoquinoxalines by the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mrow><mml:msubsup><mml:mtext>S</mml:mtext><mml:mtext>N</mml:mtext><mml:mtext>H</mml:mtext></mml:msubsup></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mrow><mml:msubsup><mml:mtext>S</mml:mtext><mml:mtext>N</mml:mtext><mml:mrow><mml:mi>i</mml:mi><mml:mi>p</mml:mi><mml:mi>s</mml:mi><mml:mi>o</mml:mi></mml:mrow></mml:msubsup></mml:mrow></mml:math> reactions of 2-substituted quinoxalines with acetophenones
作者:Anna Yu. Ponomareva、Dmitry G. Beresnev、Nadezhda A. Itsikson、Oleg N. Chupakhin、Gennady L. Rusinov
DOI:10.1070/mc2006v016n01abeh002208
日期:——
The treatment of quinoxalin-2-one with acetophenones in the presence of boron trifluoride gives 3-(2-hydroxy-2-R-vinyl)quinoxalin-2-ones, which can be transformed into [2,3-b]thienoquinoxalines by reactions with P2S5.
Fused Furan Moieties from Enol-like Compounds and β-Keto Sulfoxonium Ylides Involving sp<sup>2</sup> C–H Activation and Concomitant Tandem C–O Annulation
作者:Dwaipayan Das、Agniva Das、Saiful Islam、Asish R. Das、Adrita Banerjee、Romit Majumder、Debasish Bandyopadhyay