Recyclable (PhSe)2-catalyzed selective oxidation of isatin by H2O2: a practical and waste-free access to isatoic anhydride under mild and neutral conditions
Synthesis of N-alkyl isatins via oxidative cyclization of N-alkyl 2-bromo(chloro)acetanilides
作者:Qingwen Gui、Fenglin Dai、Jidan Liu、Peixing Chen、Zhiyong Yang、Xiang Chen、Ze Tan
DOI:10.1039/c4ob00118d
日期:——
A highly efficient method for the synthesis of N-alkyl isatins starting from N-alkyl 2-bromo or 2-chloro acetanilides is described. The starting materials are easy to prepare and the yields of isatins are generally high. Operationally the reaction is very simple to run. Even though best results were obtained with a catalytic amount of CuI, the reactions of N-alkyl 2-bromo acetanilides actually performed well even in the absence of any metal catalyst.
A Three-Component Reaction for the Synthesis of Diverse, Densely Substituted 2′,3′-Dihydrospiro[indoline-3,6′-[1,3]oxazine]s
作者:Jing Zhang、Hong Gao、Jing Sun、Chao-Guo Yan
DOI:10.1002/ejoc.201402500
日期:2014.9
3′-aryl-2′-styryl-2′,3′-dihydrospiro[indoline-3,6′-[1,3]oxazine]-4′,5′-dicarboxylate derivatives through readily accessible three-component reactions of α,β-unsaturated N-arylaldimines, dialkyl acetylenedicarboxylate, and N-alkylisatins. When simple N-arylaldimines were utilized in the reactions, the corresponding 2′,3′-diaryl-2′,3′-dihydrospiro[indoline-3,6′-[1,3]oxazine]s were obtained in good yields. This reaction
Rational structural modification of the isatin scaffold to develop new and potent antimicrobial agents targeting bacterial peptidoglycan glycosyltransferase
Isatin-based small molecules targeting bacterial peptidoglycan glycosyltransferase are potent antimicrobial agents against S. aureus, E. coli and methicillin-resistant Staphylococcus aureus strains.
Efficient synthesis of polycyclic dispirooxindoles via domino Diels–Alder cyclodimerization reaction
作者:Hui Gong、Jing Sun、Chao-Guo Yan
DOI:10.1016/j.tet.2014.06.097
日期:2014.9
temperature resulted in polycyclic dispirooxindole derivatives. The reaction mechanism is believed to involve sequential generation and cycloaddition of Huisgen's 1,4-dipole, and Diels–Alder cyclodimerization reaction. The similar three-component reactions containing acenaphthenequinone and phenanthrenequinone also afforded corresponding polyheterocyclic derivatives.