Peng, Yu; Cui, Li; Zhang, Guozhu, Journal of the American Chemical Society, 2009, vol. 131, p. 5062 - 5063
作者:Peng, Yu、Cui, Li、Zhang, Guozhu、Zhang, Liming
DOI:——
日期:——
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> promoted cyclisation of internal propargyl esters: structural characterisation of 1,3-dioxolium compounds
作者:Max M. Hansmann、Rebecca L. Melen、Frank Rominger、A. Stephen K. Hashmi、Douglas W. Stephan
DOI:10.1039/c4cc01370k
日期:——
The reactions of internal propargyl esters with B(C6F5)3 provide access to stable zwitterionic 1,3-dioxolium compounds which are characterised by X-ray diffraction. These 6pi-electron systems show no significant aromatic stabilisation.