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Synthesis and Direct NMR Spectroscopic Observation of [(η 4 ‐Arene)Cr(CO) 3 ] Dianions
Author(s) -
Wey Hans G.,
Bittenschön Holger
Publication year - 1990
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.199014441
Subject(s) - naphthalene , lithium (medication) , chemistry , metal , crystallography , organic chemistry , medicine , endocrinology
Use of Lithium sand instead of naphthalenepotassium in the synthesis of the dianions 1 and 2 from the η 6 ‐coordinated neutral complexes affords pure products, since there is no possibility of an exchange reaction with naphthalene, striking feature of 2 is that the most strained double bond of the cyclobutabenzene unit also remains bound to the metal center after the reduction.

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