High diastereoselectivity in Claisen rearrangement in a sterically congested cyclopentane system. Total synthesis of (±)-β-necrodol
作者:Susanta Samajdar、Anjan Ghatak、Shyamapada Banerjee、Subrata Ghosh
DOI:10.1016/s0040-4020(01)00019-9
日期:2001.3
Total synthesis of the monoterpene beta -necrodol has been accomplished. The key step involves an ortho-ester Claisen rearrangement in a highly sterically congested cyclopentane derivative resulting in a high level of 1,3-trans diastereoselection. A novel photo-induced decarboxylation of the obtained gamma,delta -unsaturated acid afforded beta -necrodol. (C) 2001 Elsevier Science Ltd. All rights reserved.