Dobrowolski, P. published the artcileProton and carbon-13 NMR study of the prototropic equilibriums of 2-indolinone, Application In Synthesis of 1009-27-4, the main research area is NMR indolinone tautomerism.
13C NMR data are reported for 0.5 M CDCl3 solutions of 2-indolinone and six related compounds The question of prototropic equilibrium is discussed involving three possible tautomers, A, B, C. Form A is found to predominate in the dynamic equilibrium established for three of the compounds studied. In the case of a fourth compound slow exchange between forms B and C results in the finding of both of these forms in the approx. ratio 1:1.8. These findings are supported by 1H NMR measurements. Corresponding 1H and 13C NMR measurements on methanol solutions are essentially the same.
Journal of Molecular Structure published new progress about NMR (nuclear magnetic resonance). 1009-27-4 belongs to class indole-building-block, name is 2-Ethoxy-1H-indole, and the molecular formula is C10H11NO, Application In Synthesis of 1009-27-4.
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles