236094-35-2Relevant academic research and scientific papers
Insertion of the o -Aminophenol Core into Ninhydrin-Phenol Adducts: Migration of Ninhydrin Carbon Leading to N -Phenylbenzoate-Substituted Phthalimides
Das, Suven,Dutta, Arpita,Maity, Suvendu,Ghosh, Prasanta,Mahali, Kalachand
, p. 581 - 584 (2018)
An unexpected migration of a ninhydrin carbon bearing a phenolic subunit has been observed when phenolic adducts of ninhydrin reacted with 2-aminophenol in butan-1-ol at the reflux temperature. The products were unambiguously assigned as 2-(1,3-dioxoisoin
Formation of benzo[b]indeno [2,1-d]furanone ring system during alkylation of 2-(2-hydroxyaryl)2-hydroxy-1,3-indanedione derivatives
Song, Hyun Nam,Seong, Mi Ra,Lee, Hong Jung,Kim, Jae Nyoung
, p. 2759 - 2767 (1999)
During alkylation of 2-(2-hydroxyaryl)-2-hydroxy-1,3-indanedione derivatives, O-alkylated benzo[b]indeno[2,1-d]furanone derivatives were formed in appreciable amounts.
A simple synthesis of benzodiazonines from C-2 arylated 1, 3-indanediones
Das, Suven,Dutta, Arpita
, p. 701 - 707 (2016/05/09)
A simple, facile, one-pot procedure for the synthesis of substituted benzodiazonines from phenolic adducts of ninhydrin is described. The process involves a base-catalyzed rearrangement followed by condensation of 1,3-propanediamine to furnish nine-member
INDANONE DERIVATIVES, PHARMACEUTICALLY ACCEPTABLE SALTS OR OPTICAL ISOMERS THEREOF, PREPARATION METHOD FOR SAME, AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME AS ACTIVE INGREDIENT FOR PREVENTING OR TREATING VIRAL DISEASES
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Paragraph 0050, (2014/05/07)
The present invention relates to a novel indanone derivative, pharmaceutically acceptable salts or optical isomers thereof, a preparation method for same, and a pharmaceutical composition containing same as an active ingredient for preventing or treating
A simple synthesis of 4-substituted 2,3-benzoxazinones from C-2 arylated 1,3-indanediones
Das, Suven,Koley, Pradyot,Pramanik, Animesh
scheme or table, p. 3243 - 3246 (2011/06/28)
A simple one-pot procedure for the conversion of 2-hydroxy-2-(2′- hydroxy-aryl)-1,3-indanediones to 4-substituted benzoxazinones has been developed. The process constitutes an interesting acid-catalyzed rearrangement followed by condensation with hydroxyl
Friedel-Crafts type reactions of some activated cyclic ketones with phenol derivatives
Song, Hyun Nam,Lee, Hong Jung,Kim, Hyoung Rae,Ryu, Eung K.,Kim, Jae Nyoung
, p. 3303 - 3311 (2007/10/03)
Friedel-Crafts type reactions of phenol derivatives with some cyclic ketones such as ninhydrin (1), alloxan (2), isatin (3), and parabanic acid (4) were examined. 2-Monoaryl- and 2,2-diaryl-1,3-indanedione derivatives were obtained depending on the acid catalyst in the cases of ninhydrin and alloxan. In the case of isatin, the corresponding diarylated derivative was obtained as the sole product in high yields. Parabanic acid was unreactive under the reaction conditions.
