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3‐Lithio‐2‐( o ‐lithiophenyl)naphthalenedilithium—a Tetralithio Compound with σ‐ and π‐Bonded Lithium Atoms
Author(s) -
Benken Rainer,
Andres Werner,
Günther Harald
Publication year - 1988
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.198811821
Subject(s) - biphenylene , lithium (medication) , ring (chemistry) , chemistry , trapping , crystallography , lithium atom , medicinal chemistry , stereochemistry , ion , organic chemistry , phenylene , medicine , ecology , biology , ionization , endocrinology , polymer
A ring‐metalated dianion of an aromatic π system is present in the title compound 1 . It is formed upon reaction of benzo[ b ]biphenylene with lithium in THF. The Li‐ 4 ‐compound contains both σ‐ as well as π‐bonded lithium atoms, as could be demonstrated NMR spectroscopically and by trapping experiments.