Mechanistic Insights into the Ru(II)-Catalyzed Intramolecular Formal [3 + 2] Cycloaddition of (<i>E</i>)-1,6-Enynes
作者:Rui Liu、Yajie Chou、Bing Lian、De-cai Fang、Ming Gao、Tanyu Cheng、Guohua Liu
DOI:10.1021/acs.orglett.9b02446
日期:2019.9.6
challenge in organic chemistry. Herein, we report a Ru(II)-catalyzed formal [3 + 2] cycloaddition as an efficient method to prepare unprecedented bicyclo[3.3.0]octenes from readily available (E)-1,6-enynes. Mechanistic studies based on the deuterium labeling experiments and the DFT calculation disclose a reasonable mechanistic pathway, where a ruthenacyclopentene generated by an ene-yne oxidative cyclization
Berg, Ellen M. M. van den; Liemt, Willem B. S. van; Heemskerk, Bram, Recueil des Travaux Chimiques des Pays-Bas, 1989, vol. 108, # 9, p. 304 - 313
作者:Berg, Ellen M. M. van den、Liemt, Willem B. S. van、Heemskerk, Bram、Lugtenburg, Johan
DOI:——
日期:——
δ-Deuterium Isotope Effects as Probes for Transition-State Structures of Isoprenoid Substrates
作者:Seoung-ryoung Choi、Martin Breugst、Kendall N. Houk、C. Dale Poulter
DOI:10.1021/jo500394u
日期:2014.4.18
The biosynthetic pathways to isoprenoid compounds involve transfer of the prenyl moiety in allylic diphosphates to electron-rich (nucleophilic) acceptors. The acceptors can be many types of nucleophiles, while the allylic diphosphates only differ in the number of isoprene units and stereochemistry of the double bonds in the hydrocarbon moieties. Because of the wide range of nucleophilicities of naturally