Cyclotrimerization of Benzobarrelene: Synthesis of New Isomeric Barrelene Architectures
作者:Arif Daştan、Fabrizio Fabris、Ottorino De Lucchi、Murat Güney、Metin Balcı
DOI:10.1002/hlca.200390285
日期:2003.10
The cyclotrimerization reaction of benzobarrelene derivatives was investigated. Dibromobenzobarrelene 10 was converted to the bromostannyl derivative 11, which was used as the substrate of the cyclotrimerization reaction. Thus, reaction of 11, with copper(I) thiophene-2-carboxylate (CuTC) gave a mixture of the isomeric cyclotrimers 5 and 6 and the dimers 12 and 13, in addition to a trace of protodestannylated