Synlett

Revisiting cyclobutadienemetal complexes: High-content Dewar benzene polymers and a one-pot synthesis of permethylated ladderanes

MJ Marsella, S Estassi, LS Wang, K Yoon

Index: Marsella, Michael J.; Estassi, Samia; Wang, Li-Sheng; Yoon, Kunsang Synlett, 2004 , # 1 p. 192 - 194

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Citation Number: 4

Abstract

Abstract High-content Dewar benzene polymers and sterically congested [n]-ladderanes have been synthesized from [4π s+ 2π s] cyclobutadienemetal complex cycloaddition chemistry. In the former case, tetramethylcyclobutadiene-AlCl 3 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 ...