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Carbon‐13 Nmr spectra of 1,2,3‐thiadiazoles
Author(s) -
Looker James H.,
Khatri Nazir A.,
Patterson Ronald B.,
Kingsbury Charles A.
Publication year - 1978
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.5570150827
Subject(s) - chemistry , thiadiazoles , tautomer , nmr spectra database , alkene , spectral line , substituent , carbon 13 nmr , benzene , medicinal chemistry , stereochemistry , organic chemistry , catalysis , physics , astronomy
Abstract Natural abundance 13 C nmr spectra are reported for 1,2,3‐thiadiazole and nine derivatives. The spectra are discussed in terms of α‐ and β‐effects of substituent groups and compared with corresponding spectra of alkene and benzene derivatives. 13 C nmr spectra of four 1,3,4‐thiadiazoles are presented. Spectral data indicate that in dimethylsulfoxide solution 2‐mercapto‐5‐methyl‐1,3,4‐thiadiazole exists predominantly as the thione tautomer.