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An abstract of the article "Indium Chloride Catalyzed Three-Component Reaction for the Synthesis of 2-((Oxoindolin-3-yl)-4,5,6,7-tetrahydro-1H-indol-1-yl)benzamides" by Yan-Hong Jiang and colleagues is presented.

Deprotonation of pyridinium salts provides pyridinium ylides which undergo Michael addition/cyclization reaction with indole derivatives (I) to form spirocyclic compounds and furanylidene-oxindoles. [ABSTRACT FROM AUTHOR]

An efficient protocol for the diastereoselective synthesis of the title compounds by 1,3-dipolar cycloaddition of N-phenacylbenzothiazolium and N-phenacylthiazolium bromides with several oxindoles is reported. [ABSTRACT FROM AUTHOR]

The chemical structure for the for the synthesis of the compound functionalized spiro[indoline-3,4'-pyridines] and spiro[indine]-2,4-'pyridines] via a three-component reaction is presented.

An abstract of the article "Convenient Synthesis of Spiro[indoline-3,4'-pyrano[2,3-c]pyrazole] and Spiro[acenaphthyl-3,4'-pyrano[2,3-c]pyrazoles] via Four-Component Reaction" by C. Wang and colleagues is presented.

The reaction is very sensitive towards the structure of the substrates. [ABSTRACT FROM AUTHOR]

An abstract on the domino cycloaddition reactions of N-benzylbenzimidazolium salts with oxoindolin and ylidene acetates is presented.

The reaction proceeds via sequential formation of Huisgens 1,4-dipole, Michael addition, and loss of the pyridyl moiety. [ABSTRACT FROM AUTHOR]

In contrast to the title reaction, reaction of phenacylideneoxindoles (X) with cyanoacetamide (XI) gives 4-(2-oxoindolin-3-yl)-2-oxopyrrolidines (XII). [ABSTRACT FROM AUTHOR]

A diagram is presented which explains the chemical structure of selective synthesis of pyridines through Lewis acid catalyzed reactions of acetylenedicarboxylate, Isatins, and Arylamines.

An abstract of the article "Povarov Reaction of β-Enamino Esters and Isatin-3-imines for Diastereoselective Synthesis of Spiro[indoline-3,2'-quinolines]" by H. Gao, J. Yan and colleagues are presented.

A graphical abstract of the study "Synthesis of Densely Substituted Dispirocyclopentanebisoxindoles by Base Promoted Sequential Reaction of Two Different 3-Methyleneoxindoles With Thiol" by Guo-Liang Shen and colleagues is presented.

An abstract of the article "Two-Carbon Ring Expansion of Isatin: A Convenient Construction of a Dibenzo[b,d]azepinone Scaffold." by Rong-Guo Shi and colleagues is presented.

16 Title compounds of type (IV)/(V) are prepared by a three-component one-pot reaction. [ABSTRACT FROM AUTHOR]

An uncatalyzed three-component reaction of 3-methylene oxindoles, α-amino acids, and dialkyl acetylenedicarboxylates proceeds with sequential generation of active α,β-enamino ester and azomethine ylide, followed by 1,3-dipolar cycloaddition reaction. [ABSTRACT FROM AUTHOR]

Spiro[indoline-3,3′-pyrrolizines] (IV), (VI) and (VIII) are obtained by normal 1,3-cycloaddition reaction of α-amino acids, isatins, and but-2-ynedioates. [ABSTRACT FROM AUTHOR]

The presence of the dimethylamino group in the pyridinium bromides leads to the unexpected formation of compounds (VII) and (IX), whereas pyridinium bromides (II) gives the corresponding products (III) and (IV). [ABSTRACT FROM AUTHOR]

The approach to substituted pyrroles (IV) involves sequential addition of arylamines to acetylenedicarboxylate (II), Michael addition of the resulting β-enamino ester to substrates (I) followed by intramolecular nucleophilic addition and dehydration. [ABSTRACT FROM AUTHOR]

Depending on the molar ratios of the reactants, 3′-hydroxy or 3′-arylamino derivatives of the biologically important spiro systems are available. [ABSTRACT FROM AUTHOR]