Investigating Direct Alkynylation at the Bridgehead of Bicyclic Cages Using Silver(I) Acetylides
作者:Rebecca H. Pouwer、Jason B. Harper、Kamesh Vyakaranam、Josef Michl、Craig M. Williams、Carsten H. Jessen、Paul V. Bernhardt
DOI:10.1002/ejoc.200600701
日期:2007.1
Silver(I) acetylides facilitate direct carbon-carbon bond formation at the bridgehead position of adamantane, and in some instances related systems such as carborate anions and bicyclo [2.2.2]octanes. Substrate constraints along with attempts to further understand the underlying mechanism are presented. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
providing the most convenient synthesis of thiirene 1-oxides. Disulfur dichloride also reacted with acetylenes to give 5 in good yields with the elimination of one sulfur atom. Although the alkalinehydrolysis of 5 provided 10 exclusively, acid hydrolysis gave a mixture of α-oxothioketone 9 and thiirene 1-oxide 10 in modest yields. All thiirene 1-oxides 10a–c isomerized to produce α-oxothioketones 9 in