Studies on Thiourea Catalysed Bromocycloetherification and Bromolactonisations
作者:Venkatachalam Pitchumani、David W. Lupton
DOI:10.1071/ch20184
日期:——
Lewis base catalysed halofunctionalisation reactions of alkenes are well established and allow access to, among others, various oxygen containing heterocycles. By exploiting the known conversion of N-heterocyclic carbenes into the corresponding thioureas it has been possible to prepare and study a range of chiral and non-chiral Lewis base catalysts for such reactions. Although all thiourea catalysts