Electrochemically induced multicomponent assembling of isatins, 4-hydroxyquinolin-2(1H)-one and malononitrile: a convenient and efficient way to functionalized spirocyclic [indole-3,4'-pyrano[3,2-c]quinoline] scaffold.
Mol Divers
; 14(4): 833-9, 2010 Nov.
Article
in En
| MEDLINE
| ID: mdl-19921455
ABSTRACT
Electrochemically induced catalytic multicomponent transformation of isatins, 4-hydroxyquinolin-2(1H)-one and malononitrile in ethanol in an undivided cell in the presence of sodium bromide as an electrolyte results in the formation of spirooxindoles with fused functionalized indole-3,4'-pyrano[3,2-c]quinoline] scaffold in 75-91% substance yields and 500-600% current yield. The developed efficient electrocatalytic approach to medicinally relevant [indole-3,4'-pyrano[3,2-c]quinoline] scaffold is beneficial from the viewpoint of diversity-oriented large-scale processes and represents a novel example of facile environmentally benign synthetic concept for electrocatalytic multicomponent reactions.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Quinolones
/
Macromolecular Substances
/
Electrochemical Techniques
/
Hydroxyquinolines
/
Indoles
/
Isatin
/
Nitriles
Type of study:
Evaluation_studies
Language:
En
Journal:
Mol Divers
Journal subject:
BIOLOGIA MOLECULAR
Year:
2010
Document type:
Article
Affiliation country:
RUSSIA