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4 H ‐1,4‐Oxazocine, a Planar, Diatropic 10π‐Dihetero[8]annulene?
Author(s) -
Zipperer Bernhard,
Hunkler Dieter,
Fritz Hans,
Rihs Grety,
Prinzbach Horst
Publication year - 1984
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.198403091
Subject(s) - annulene , planar , chemistry , stereochemistry , computer science , computer graphics (images)
Yes! is the answer to the question posed in the title of this communication: According to 1 H‐ and 13 C‐NMR data, the parent compound 1, R H, is diatropic. In derivatives with N ‐donor subsituents the heterocycle is diatropic and planar, in derivatives with N ‐acceptor subsituents, on the other hand, it is neither planar nor diatropic.