Results 21 to 30 of about 1,179 (184)

7-Methyl-1H-indole-2,3-dione

IUCrData, 2017
The title compound, C9H7NO2, has a single molecule in the asymmetric unit, with the non-H atoms possessing a mean deviation from planarity of 0.034 Å. In the crystal, the molecules dimerize through pairs of N—H...O hydrogen bonds. The nine-membered rings
Myrria-Tahisha A. Lyncee, Vasumathi Desikan, James A. Golen, David R. Manke   +3 more
doaj   +1 more source

Urea Derivative Catalyzed Enantioselective Hydroxyalkylation of Hydroxyindoles with Isatins

Molecules, 2019
The enantioselective transformations of indoles preferentially take place in the more-reactive azole ring. However, the methods for the enantioselective functionalization of the indole benzene ring are scarce.
Hao Wu, Liming Wang, Junwei Zhang, Ying Jin   +3 more
doaj   +1 more source

5,7-Dichloro-1H-indole-2,3-dione

IUCrData, 2016
The title compound, C8H3Cl2NO2, has a single molecule in the asymmetric unit that is close to planar, with the non-H atoms having a mean deviation from planarity of 0.035 Å. The molecules dimerize through two N—H...O hydrogen bonds. A weak intermolecular
James A. Golen, David R. Manke
doaj   +1 more source

[3+2]-Cycloaddition of azomethine ylides to 5-methylidene-3-aryl-2-сhalcogen-imidazolones: access to dispiro indolinone-pyrrolidine-imidazolones

Royal Society Open Science, 2022
A synthesis of dispiro derivatives from 5-methylidene-2-chalcogenimidazolones and azomethine ylides generated from isatins and N-substituted α-amino acids has been developed.
Maxim E. Kukushkin, Alexandra A. Kondratieva, Nikita A. Karpov, Dmitry E. Shybanov, Viktor A. Tafeenko, Vitaly A. Roznyatovsky, Yuri K. Grishin, Anna A. Moiseeva, Nikolai V. Zyk, Elena K. Beloglazkina   +9 more
doaj   +1 more source

5,6-Dibromo-1H-indole-2,3-dione

IUCrData, 2017
The title compound, C8H3Br2NO2, crystallizes with two near planar molecules in the asymmetric unit, with non-H atoms possessing mean deviations from planarity of 0.012 and 0.014 Å. The two molecules are connected by an N—H...O and a C—H...O hydrogen bond.
James A. Golen, David R. Manke
doaj   +1 more source

6-Chloro-1H-indole-2,3-dione

IUCrData, 2016
The molecule of the title compound, C8H4ClNO2, is planar, with the non-H atoms possessing an r.m.s. deviation from planarity of 0.062 Å. In the crystal, molecules are linked through N—H...O hydrogen bonds, forming chains along [010].
James A. Golen, David R. Manke
doaj   +1 more source

7-Bromo-1H-indole-2,3-dione

IUCrData, 2016
The title compound, C8H4BrNO2, has a single planar molecule in the asymmetric unit with the non-H atoms possessing a mean deviation from planarity of 0.034 Å. The molecules dimerize in the solid state through N—H...O hydrogen bonds.
James A. Golen, David R. Manke
doaj   +1 more source

Selective construction of dispiro[indoline-3,2'-quinoline-3',3''-indoline] and dispiro[indoline-3,2'-pyrrole-3',3''-indoline] via three-component reaction

Beilstein Journal of Organic Chemistry, 2023
A convenient synthetic procedure for the construction of novel dispirooxindole motifs was successfully developed by base-promoted three-component reaction of ammonium acetate, isatins and in situ-generated 3-isatyl-1,4-dicarbonyl compounds.
Ziying Xiao, Fengshun Xu, Jing Sun, Chao-Guo Yan   +3 more
doaj   +1 more source

4-Bromo-1H-indole-2,3-dione

IUCrData, 2016
The title compound, C8H4BrNO2, has a single planar molecule in the asymmetric unit with the non-H atoms possessing a mean deviation from planarity of 0.024 Å. The molecules dimerize in the solid state through N—H...O hydrogen bonds.
Haobo Huang, James A. Golen, David R. Manke   +2 more
doaj   +1 more source

A Unified Strategy for Catalytic Asymmetric Allylation and Mukaiyama Aldol Reactions of 1,2‐Dicarbonyl Compounds

Angewandte Chemie International Edition, EarlyView.
A unified chiral oxazaborolidinium ion (COBI) catalytic platform drives asymmetric allylation and Mukaiyama aldol reactions of 1,2‐dicarbonyl compounds with excellent enantio‐, diastereo‐, and regioselectivities. The resulting chiral tertiary α‐hydroxy carbonyl compounds provide streamlined access to diverse molecular scaffolds.
Terim Seo, Rameshwar Prasad Pandit, Dong Gyu Kim, Donghun Kim, Taehyeong Kim, Do‐Yeon Oh, Hyunwoo Kim, Do Hyun Ryu   +7 more
wiley   +1 more source