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Tetrakis(phenylimino)cyclobutane (Tetrameric Phenyl Isocyanide)
Author(s) -
Bestmann Hans Jürgen,
Schmid Günter,
Wilhelm Eberhard
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.198001362
Subject(s) - cyclobutane , chemistry , ring (chemistry) , phenylhydrazine , nitrobenzene , hydrobromide , phosphorane , amidine , isocyanide , stereochemistry , medicinal chemistry , organic chemistry , catalysis
A nitrogen analogue of the hitherto unknown cyclobutane tetraone , the title compound (2) , is formed as red‐violet crystals from the phosphorane (1) and nitrobenzene in a one‐pot reaction. The arrangement of phenyl groups indicated in the formula is confirmed by X‐ray structure analysis. (2) is reduced, e.g. by phenylhydrazine, to (3) , the first amidine of squaric acid whose N atoms are not linked in a ring.