79183-27-0

Upstream product

• 91-56-5 indole-2,3-dione 
• 4392-24-9 3-bromo-1-phenyl-1-propenyl bromide 
• 479-41-4 indirubin 
• 2687-12-9 cinnamyl chloride 

Downstream Products

• 57385-02-1 1-cinnamyl-1H-benzo[d][1,3]oxazine-2,4-dione 
• 1629166-50-2 1-(3-phenylpropyl)indolin-2-one 
• 929817-20-9 C₂₀H₁₇N₃O₃S 

Relevant academic research and scientific papers

Palladium catalyzed divergent cycloadditions of vinylidenecyclopropane-diesters with methyleneindolinones enabled by zwitterionic π-propargyl palladium species

A palladium-catalyzed divergent synthesis of spirooxindoles fused with a five- or a six-membered ring by a cycloaddition reaction of vinylidenecyclopropane-diesters with methyleneindolinones was disclosed. This protocol features anin situgenerated unprecedented zwitterionic π-propargyl palladium species in cycloaddition reactions and a switchable process between (3+2) and (4+2) cycloadditions by changing the phosphine ligand.

Divergent and Orthogonal Approach to Carbazoles and Pyridoindoles from Oxindoles via Indole Intermediates

The previously unexplored Grignard addition to oxindoles provides a regiospecific approach to 2- and 2,3-disubstituted indole derivatives in high yields via a one-pot aromatization driven dehydration pathway. This method allows a convenient preparation of diallyl indoles that are used as ring-closing metathesis (RCM) precursors for the orthogonal synthesis of pyrido[1,2-a]indoles and carbazoles. The synthetic utility of this method is illustrated by the synthesis of a microtubulin inhibitor and naturally occurring carbazole alkaloids.

Indium-mediated Palladium-catalyzed Allylic Alkylation of Isatins with Alkynes

An unprecedented indium-mediated palladium-catalyzed allylic alkylation of isatins with alkynes is disclosed. This reaction provides a new, practical, and straightforward route to access 3-allyl-3-hydroxy-2-oxindoles in good yields with broad substrate scope and scalability, exhibiting high atom and step economy. A primary mechanistic study reveals that indium played two roles in the reaction, first as a reductant and second as a Lewis acid. Compared with previous methods, our strategy eliminated the steps for the separation and purification of the reaction intermediates, as well as pre-installing leaving groups to allylic substrates. Moreover, our reaction did not employ moisture-sensitive allylic metal species and stoichiometric oxidants. (Figure presented.).

Synthesis of diverse isatins: Via ring contraction of 3-diazoquinoline-2,4-diones

An efficient synthesis of diverse isatin derivatives was accomplished by a copper-mediated reaction of 3-diazoquinoline-2,4-diones via ring contraction through domino Wolff rearrangement, decarboxylation, bromination, substitution, and dehydration. This protocol has several advantages as a one-pot procedure, with functional group tolerance, and high yield.

Substrates as Electron-Donor Precursors: Synthesis of Naphtho-Fused Oxindoles via Benzannulation of 2-Halobenzaldehydes and Indolin-2-ones

An unusual benzannulation reaction has been realized by integrating intermolecular adol condensation with subsequent intramolercular base-promoted homolytic aromatic substitution. This novel cascade reaction provides a straightforward approach toward various naphtho-fused oxindoles from 2-halobenzaldehydes and indolin-2-ones in the presence of Cs2CO3 in DMSO. The enolates of indolin-2-ones as new and internal electron donors have been demonstrated to initiate intramolecular radical dehalogenative coupling.

A cascade synthetic route to new bioactive spiroindolinepyrido[1,2-a]indolediones from indirubin

The allylation of indirubin produced the expected indolic N′-allylindirubin and N,N′-diallylindirubin derivatives in moderate yields, together with the corresponding N-substituted isatin products. At higher temperatures, the base-initiated reaction with a

Chemoselective oxidation of 1-alkenylisatins with m-chloroperbenzoic acid. Synthesis of new derivatives of isatoic anhydride

Oxidation of alkyl- and alkenylisatins with m-chloroperbenzoic acid proceeds with high chemoselectivity leading to the formation of 1-substituted isatoic anhydrides (benzo[d][1,3]oxazine-2,4-diones) without epoxidation of the double bond of the alkenyl su