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Synlett 2004(1): 192-194
DOI: 10.1055/s-2003-43348
DOI: 10.1055/s-2003-43348
CLUSTER
© Georg Thieme Verlag Stuttgart · New York
Revisiting Cyclobutadienemetal Complexes: High-Content Dewar Benzene Polymers and a One-Pot Synthesis of Permethylated Ladderanes
Weitere Informationen
Received
11 September 2003
Publikationsdatum:
26. November 2003 (online)
Publikationsverlauf
Publikationsdatum:
26. November 2003 (online)
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Abstract
High-content Dewar benzene polymers and sterically congested [n]-ladderanes have been synthesized from [4πs+2πs] cyclobutadienemetal complex cycloaddition chemistry. In the former case, tetramethylcyclobutadiene-AlCl3 is reacted with an acetylene-containing precursor polymer to yield > 95% Dewar benzene incorporation. In the latter case, [n]-ladderanes containing up to thirteen rings are prepared via a one-pot procedure from 2-butyne.
Key words
polymer synthesis - Dewar benzene - [n]-ladderanes - cycloadditions - cyclobutadiene
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References
Calculations were performed using Titan computational software, Schrodinger, Inc., 1500 SW First Avenue, Suite 1180, Portland, Oregon 97201.