A highly selective hydrogen‐deuterium exchange in indolium heptamethine cyanines | Zendy

Lipowska Malgorzata | Zendy; Patterson Steven E. | Zendy; Patonay Gabor | Zendy; Strekowski Lucjan | Zendy

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A highly selective hydrogen‐deuterium exchange in indolium heptamethine cyanines

Author(s) -

Lipowska Malgorzata,

Patterson Steven E.,

Patonay Gabor,

Strekowski Lucjan

Publication year - 1993

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570300503

Subject(s) - chemistry , hydrogen–deuterium exchange , deuterium , catalysis , proton , proton nmr , base (topology) , hydrogen , deuterium nmr , photochemistry , carbon 13 nmr , stereochemistry , organic chemistry , nuclear physics , mathematical analysis , physics , mathematics

Chemical shift assignments in 1 H nmr spectra of four tricarbocyanines have been made. Studies by 1 H nmr have shown a rapid acid‐catalyzed proton exchange at positions 1′,7′ and a much slower exchange at positions 3′,5′ of the heptamethine chain. Base catalysis results in a slow exchange at positions 1′,7′ only.

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