13672-23-6Relevant articles and documents
3-Hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-one as a versatile intermediate for retro-Henry and Friedel-Crafts alkylation reactions in aqueous medium
Nagaraju, Sakkani,Sathish, Kota,Paplal, Banoth,Satyanarayana, Neeli,Kashinath, Dhurke
supporting information, p. 14045 - 14050 (2019/09/18)
The first example of a retro-Henry type reaction is reported using 3-hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-ones which are prepared via catalyst-free Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin. These compounds were used
A versatile synthetic methodology for the synthesis of tryptophols
Garden, Simon J,Da Silva, Rosangela B,Pinto, Angelo C
, p. 8399 - 8412 (2007/10/03)
Tryptophols have been obtained in high yields by the reduction of 3-substituted-dioxindoles (obtained by the aldol condensation reaction of ketones with isatins or by a modified Knovenagel malonate condensation) using a borane tetrahydrofuran complex. The reported methodology offers distinct advantages over existing methods for the synthesis of these compounds, including consistently greater yields, diastereoselective syntheses and the possibility for the synthesis of a wide range of structurally different tryptophols. The reduction reaction was found to proceed via an intermediate 1,3-diol-oxindole, which was obtained diastereoselectively and, which was subsequently reduced to the corresponding tryptophol.