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Novel Rearrangement Followed by Ring Contraction of Highly Selective and Sensitive Turn‐On Chromogenic and Fluorescent Chemodosimeters for Cu 2+ Ions
Author(s) -
Das Paramita,
Chaudhuri Tandrima,
Karmakar Animesh,
Saha Sucharita,
Sengupta Bandyopadhyay Sumita,
Mukhopadhyay Chhanda
Publication year - 2016
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201600371
Subject(s) - chromogenic , chemistry , fluorescence , ion , naked eye , ring (chemistry) , turn (biochemistry) , photochemistry , contraction (grammar) , crystallography , stereochemistry , organic chemistry , optics , chromatography , biochemistry , detection limit , medicine , physics
The dual chromogenic and fluorogenic chemodosimetric behaviour of substituted 5‐amino‐1,2‐dihydro‐2‐methyl‐1,6‐naphthyridine‐8‐carbonitriles was investigated. The reaction‐based indicators operate by an unusual rearrangement followed by ring contraction to generate a pyrrolopyridine, with a “naked‐eye” response and chromofluorogenic selective sensing for Cu 2+ ions. The structure of the pyrrolopyridine was confirmed by single‐crystal X‐ray analysis.