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Ring‐Opening of a Bicyclo[3.2.0]hepta‐1,3‐dienyl‐cobalt( I ) Complex Followed by Cycloaddition
Author(s) -
Butenschön 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.199010571
Subject(s) - cycloaddition , cobalt , ring (chemistry) , bicyclic molecule , diene , chemistry , medicinal chemistry , stereochemistry , organic chemistry , catalysis , natural rubber
The four‐membered ring of the cobalt complex 1 is opened at only 200°C . The resulting allyl diene system 2 can be trapped by [2 + 4] cycloaddition with dienophiles to give cycloadducts such as 3 in good yields. The stereochemistry of the cycloadducts is strongly influenced by the coordination behavior of the dienophile. L = tetraphenylcyclobutadiene, E = COOCH 3 .
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