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1 H ‐Azepine: NMR Spectroscopic and Chemical Characterization
Author(s) -
Vogel Emanuel,
Altenbach HansJosef,
Drossard JacobMatthias,
Schmickler Hans,
Stegelmeier Hartmut
Publication year - 1980
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198010161
Subject(s) - azepine , tautomer , characterization (materials science) , carbon 13 nmr , ring (chemistry) , valence (chemistry) , spectral line , chemistry , materials science , organic chemistry , physics , nanotechnology , astronomy
1 H ‐Azepine (1) —generated by a new method in solution at −78°C —could be characterized for the first time as a practically uniform seven‐membered ring valence tautomer by its 1 H‐ and 13 C‐NMR spectra. (1) polymerizes very readily. It forms 3 H ‐azepine (2) with catalytic amounts of acid or base. (2) can be vacuum distilled, albeit with considerable losses.