A simple and highly efficientmethod for the selective reduction of the C=C bond in allylicalcohols has been developed using the ruthenium(II) catalyst [RuCl(mu-Cl)(eta(6)-C(6)Me(6)}2].
使用钌(II)催化剂[RuCl(mu-Cl)(eta(6)-C(6)Me(6 )} 2]。
Ruthenium-catalyzed redox isomerization/transfer hydrogenation in organic and aqueous media: A one-pot tandem process for the reduction of allylic alcohols
作者:Victorio Cadierno、Pascale Crochet、Javier Francos、Sergio E. García-Garrido、José Gimeno、Noel Nebra
DOI:10.1039/b916117a
日期:——
The hexamethylbenzene-ruthenium(II) dimer [RuCl(μ-Cl)(η6-C6Me6)}2] 1 and the mononuclear bis(allyl)-ruthenium(IV) complex [RuCl2(η3:η2:η3-C12H18)] 2, associated with base and a hydrogen donor, were found to be active catalysts for the selective reduction of the CC bond of allylic alcohols both in organic and aqueousmedia. The process, which proceeds in a one-pot manner, involves a sequence of two
Straightforward chemo- and stereoselective fluorocyclopropanation of allylic alcohols: exploiting the electrophilic nature of the not so elusive fluoroiodomethyllithium
作者:Marco Colella、Arianna Tota、Angela Großjohann、Claudia Carlucci、Andrea Aramini、Nadeem S. Sheikh、Leonardo Degennaro、Renzo Luisi
DOI:10.1039/c9cc03394g
日期:——
fluorocyclopropanation of allylicalcohols is reported. This simple method involves the not so elusive fluoroiodomethyllithium, a carbenoidic intermediate that under the developed conditions discloses its electrophilic nature. Gratifyingly, the reaction turned out to be highly chemo- and stereoselective, and DFT calculations provided insights into the structure and nature of this new type of carbenoid.
Kinetic Resolution of Allyltriflamides through a Pd-Catalyzed C–H Functionalization with Allenes: Asymmetric Assembly of Tetrahydropyridines
作者:José Manuel González、Borja Cendón、José Luis Mascareñas、Moisés Gulías
DOI:10.1021/jacs.1c01929
日期:2021.3.17
A New Approach to the Nazarov Reaction via Sequential Electrocyclic Ring Opening and Ring Closure
作者:Tina N. Grant、F. G. West
DOI:10.1021/ja063421a
日期:2006.7.1
furnishes vinylcyclopropanol silyl ethers in good yield. Treatment with silver(I) at room temperature effects disrotatory electrocyclic opening to a 2-chloro-3-silyloxypentadienyl cation, which then undergoes conrotatory (Nazarov) electrocyclization to provide chlorocyclopentenones. This two-step sequence offers a convenient and mild alternative to the standard Nazarovcyclization protocol via a formal 4+1