A New Access to Multifunctional Linear Triquinanes and Their Homologues via ?,?-Unsaturated Fischer Carbene Complexes
作者:Yao-Ting Wu、Denis Vidovic、J�rg Magull、Armin de Meijere
DOI:10.1002/ejoc.200400858
日期:2005.4
corresponding protected (2'-oxocycloalkyl)methyl-substituted cyclopentadienes 6, which were obtained by cocyclization of the alkynes 5 with the β-dimethylamino-substituted α,β-unsaturated Fischercarbenecomplexes 4 in 38–81 % yield (6 examples with 66–81 %). In most cases, the cis,anti,cis-isomers anti-7 were the major products. While the twofold cis-fusion is favored by minimal ring strain, hydrogen