Ruthenium-catalyzed coupling of unactivated olefins with unactivated alkynes
作者:Masahiro Murakami、Minoru Ubukata、Yoshihiko Ito
DOI:10.1016/s0040-4039(98)01580-9
日期:1998.10
A new ruthenium-catalyzed coupling reaction of an olefin with an alkyne is presented. The CH bond of the olefin formally undergoes transaddition to the CC triple bond to produce conjugated dienes.
A Supramolecular Strategy for Selective Catalytic Hydrogenation Independent of Remote Chain Length
作者:Trandon A. Bender、Robert G. Bergman、Kenneth N. Raymond、F. Dean Toste
DOI:10.1021/jacs.9b05604
日期:2019.7.31
of unsaturation. While the reaction requires at least one sterically nondemanding alkene substituent, the rate of hydrogenation is not sensitive to the distance between the alkene and the functional group, including a carboxylate, on the other substituent. This observation indicates that only the double bond has to be encapsulated to effect hydrogenation. Going further, we demonstrate that this supramolecular
Abstract An intramolecular organocatalytic enantioselective aza-Michaelreaction of carbamates, sulfonamides and acetamides to α,β-unsaturated ketones was developed. This process is promoted by 9-amino-9-deoxy-epi-quinine and diphenyl hydrogen phosphate to afford a straightforward and expeditious synthesis of several synthetically useful five- and six-membered heterocycles with excellent enantioselectivity
Enantioselective Aziridination of Unactivated Terminal Alkenes Using a Planar Chiral Rh(III) Indenyl Catalyst
作者:Patrick Gross、Hoyoung Im、David Laws、Bohyun Park、Mu-Hyun Baik、Simon B. Blakey
DOI:10.1021/jacs.3c10637
日期:2024.1.17
approach utilizing a planar chiral rhodium indenyl catalyst to facilitate the enantioselective aziridination of unactivatedalkenes. This transformation exhibits a remarkable degree of functional group tolerance and displays excellent chemoselectivity favoring unactivatedalkenes over their activated counterparts, delivering a wide range of enantioenriched high-value chiral aziridines. Computational