An efficient one-pot synthesis of functionalized chromeno[4,3-b]pyridine derivatives under catalyst-free conditions.
Mol Divers
; 21(2): 293-304, 2017 May.
Article
in En
| MEDLINE
| ID: mdl-28144767
ABSTRACT
A concise, efficient one-pot synthesis of functionalized chromeno[4,3-b]pyridine derivatives via a three-component reaction of 4-oxo-4H-chromene-3-carbaldehydes, malononitrile or cyanoacetates, and aromatic amines under catalyst-free conditions in an environmentally friendly medium (ethanol-water, 31 v/v) is described. This synthesis involves a group-assisted purification process, which avoids traditional recrystallization and chromatographic purification methods.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pyridines
Language:
En
Journal:
Mol Divers
Journal subject:
BIOLOGIA MOLECULAR
Year:
2017
Type:
Article