Über die präparative Nutzung der 1,3-Thiazoliumsalzkatalysierten Acyloin- und Benzoin-Bildung; IV1. Herstellung von Acyloinen mit funktionellen Gruppen
Cyclization Reactions of Oxyallyl Cation. A Method for Cyclopentane Ring Formation
作者:Bojan Vulovic、Milena Trmcic、Radomir Matovic、Radomir N. Saicic
DOI:10.1021/acs.orglett.9b03791
日期:2019.12.6
positioned alkene bond undergo 5-exo-cyclization with the formation of vinylcyclopentane derivatives. Alkyne analogues provide allenes. The reaction proceeds with a moderate to excellent level of stereoselectivity and allows for asymmetric induction in the reaction with chiral substrate.
STETTER H.; RAEMSCH R. Y., SYNTHESIS (BRD), 1981, NO 6, 477-478
作者:STETTER H.、 RAEMSCH R. Y.
DOI:——
日期:——
Über die präparative Nutzung der 1,3-Thiazoliumsalzkatalysierten Acyloin- und Benzoin-Bildung; IV<sup>1</sup>. Herstellung von Acyloinen mit funktionellen Gruppen
作者:Hermann Stetter、René Yvonne Rämsch
DOI:10.1055/s-1981-29496
日期:——
Organocatalytic Synthesis of Substituted Vinylene Carbonates
作者:Killian Onida、Alice J. Haddleton、Sébastien Norsic、Christophe Boisson、Franck D'Agosto、Nicolas Duguet
DOI:10.1002/adsc.202100870
日期:2021.11.23
organocatalytic synthesis of substituted vinylene carbonates from benzoins and acyloins was studied using diphenyl carbonate as a carbonyl source. A range of N-Heterocyclic Carbene (NHC) precursors were screened and it was found that imidazolium salts were the most active for this transformation. The reaction occurs at 90 °C under solvent-free conditions. A wide range of substituted vinylene carbonates