Environmentally friendly approach to convergent synthesis of highly functionalized indanone fused multicyclic pyrrolines
作者:Xi-Min Liu、Xin-Rong Lin、Sheng-Jiao Yan、Mei-Yang Peng、Rong Huang、Jun Lin
DOI:10.1016/j.tet.2016.07.006
日期:2016.9
A facile synthesis of highly functionized indanone fused multicyclic pyrrolines using the heterocyclic ketene aminal and ninhydrin is described. Derivative alkoxyl or amine substituted analogues were also directly achieved upon adding alcohols or amines as corresponding starting materials. The reaction conditions are environment friendly and have a good tolerance towards a variety of heterocyclic ketene
Three-Component Synthesis of Indanone-Fused Spirooxindole Derivatives
作者:Xue-Bing Chen、Xi-Ming Liu、Rong Huang、Sheng-Jiao Yan、Jun Lin
DOI:10.1002/ejoc.201300376
日期:2013.7
A simple, straightforward and versatile multicomponent protocol for the synthesis of indanone-fused spirooxindole derivatives has been developed. The strategy involves the one-pot three-component reaction of heterocyclic ketene aminals, 1H-indene-1,3(2H)-dione and the dicarbonyl compounds isatins or acenaphthenequinone in an ethanol/water medium catalysed by p-TSA at reflux. Mild reaction conditions
A water-mediated regioselective synthesis of 6,7-diaryl-5-oxo-2,3,5,6-tetrahydroimidazo[1,2-a]pyridine-6-carbonitriles was performed by the reaction of 2-[1-cyano-2,2-bis(methylsulfanyl)vinyl]benzonitrile with 1-aryl-2-(imidazolidin-2-ylidene)ethanones under basic conditions. This reaction involves an unprecedented (4+2) annulation.
A Convenient Synthesis of 3,7′-Bisindole Derivatives
作者:Teng Liu、Hong-You Zhu、Da-Yun Luo、Sheng-Jiao Yan、Jun Lin
DOI:10.3390/molecules21050638
日期:——
An efficient and convenient method to synthesize highly functionalized 3,7'-bisindole derivatives has been developed via a Michael addition and cyclic condensation reaction of heterocyclic ketene aminals (HKAs) with 2-(1H-indol-3-yl)cyclohexa-2,5-diene-1,4-dione derivatives in ethanol-based solvents at room temperature. This strategy provides an efficient, environmentally friendly approach for easy
Three Component Solvent-free Synthesis of Chroman-2,4-dione-based Heterocyclic Ketene Aminal (HKA) Derivatives by "GAP" Chemistry
作者:Fu-Chao Yu、Xiao-Pan Hao、Xiu-Yang Jiang、Sheng-Jiao Yan、Jun Lin
DOI:10.5012/bkcs.2014.35.6.1625
日期:2014.6.20
A concise and efficient one-pot synthesis of chroman-2,4-dione-based HKA derivatives by three component reaction of HKAs, triethoxymethane and 4-hydroxycoumarin derivatives under solvent-free and catalyst-free conditions is described. This protocol has many advantages, in that the GAP (Group-Assistant-Purification) chemistry process is involved in this method. As a result, the experimenter can avoid cumbersome process steps such as traditional chromatography and recrystallization purifications. The desired products can be easily obtained by washing the crude products with 95% EtOH.