92161-52-9

Upstream product

• 6341-92-0 6-chloroisatin 
• 100-58-3 phenylmagnesium bromide 
• 1181455-53-7 (E)-4-chloro-2-nitro-1-styrylbenzene 
• 1333392-23-6 2-azido-4-chloro-1-(phenylethynyl)benzene 

Downstream Products

• 1175713-11-7 tert-butyl 6-chloro-2-oxo-3-phenylindoline-1-carboxylate 
• 1289108-31-1 tert-butyl 6-chloro-3-(2-(1,3-dioxoisoindolin-2-yl)-3-ethoxy-3-oxopropyl)-2-oxo-3-phenylindoline-1-carboxylate 
• 1289108-77-5 tert-butyl 6-chloro-3-(2-(1,3-dioxoisoindolin-2-yl)-3-ethoxy-3-oxopropyl)-2-oxo-3-phenylindoline-1-carboxylate 
• 4076-50-0 2-amino-4-chlorobenzophenone 

Relevant academic research and scientific papers

Counterion Control of t-BuO-Mediated Single Electron Transfer to Nitrostilbenes to Construct N-Hydroxyindoles or Oxindoles

tert-Butoxide unlocks new reactivity patterns embedded in nitroarenes. Exposure of nitrostilbenes to sodium tert-butoxide was found to produce N-hydroxyindoles at room temperature without an additive. Changing the counterion to potassium changed the reaction outcome to yield solely oxindoles through an unprecedented dioxygen-transfer reaction followed by a 1,2-phenyl migration. Mechanistic experiments established that these reactions proceed via radical intermediates and suggest that counterion coordination controls whether an oxindole or N-hydroxyindole product is formed.

One-Pot Synthesis of 2-Aminobenzophenones from 2-Alkynyl Arylazides Catalyzed by Pd and Cu Precursors

We describe a novel one-pot three-step reaction of 2-alkynyl arylazides through palladium-catalyzed formation of 3-hydroxy-3-phenylindolin-2-ones followed by hydrolysis of amide bonds and copper-catalyzed decarboxylation to give 2-aminobenzophenones. This synthetic method works well with various 2-alkynyl arylazides and affords the products in moderate to good yields under mild reaction conditions.

One-pot synthesis of 3-hydroxy-2-oxindoles: Via acyloin rearrangements of 2-hydroxy-indolin-3-ones generated in situ from 2-alkynyl arylazides

A novel one-pot method to prepare 3-hydroxy-2-oxindoles via acyloin rearrangements of 2-hydroxy-indolin-3-ones generated in situ from 2-alkynyl arylazides has been described. The reaction was accomplished to afford a variety of 3-hydroxy-2-oxindole derivatives in moderate to good yields under mild conditions. This journal is

Facile synthesis of enantioenriched Cγ-tetrasubstituted α-amino acid derivatives via an asymmetric nucleophilic addition/protonation cascade

Chemical equations presented. An asymmetric nucleophilic addition/protonation reaction of 3-substituted oxindoles and ethyl 2-phthalimidoacrylate has been described. This strategy can give direct access to Cγ-tetrasubstituted α-amino acid derivatives bearing 1,3-nonadjacent stereocenters with up to 98% yield, 94:6 dr, and >99% ee. Dual activation is proposed in the transition state, and the opposite enantiomers can be obtained simply by changing cinchonidine-derived catalyst to the cinchonine analogue.