作者:Steven W. M. Crossley、Francis Barabé、Ryan A. Shenvi
DOI:10.1021/ja5105602
日期:2014.12.3
Catalytic amounts of Co(SaltBu,tBu)Cl and organosilane irreversibly isomerize terminal alkenes by one position. The same catalysts effect cycloisomerization of dienes and retrocycloisomerization of strained rings. Strong Lewis bases like amines and imidazoles, and labile functionalities like epoxides, are tolerated.
Cycloisomerization of 1,6-Dienes Mediated by Lewis Super Acids without Additives: Easy Access to Polysubstituted Six-Membered Carbocycles
作者:Fanny Grau、Andreas Heumann、Elisabet Duñach
DOI:10.1002/anie.200602020
日期:2006.11.6
Cobalt-electrocatalytic HAT for functionalization of unsaturated C–C bonds
作者:Samer Gnaim、Adriano Bauer、Hai-Jun Zhang、Longrui Chen、Cara Gannett、Christian A. Malapit、David E. Hill、David Vogt、Tianhua Tang、Ryan A. Daley、Wei Hao、Rui Zeng、Mathilde Quertenmont、Wesley D. Beck、Elya Kandahari、Julien C. Vantourout、Pierre-Georges Echeverria、Hector D. Abruna、Donna G. Blackmond、Shelley D. Minteer、Sarah E. Reisman、Matthew S. Sigman、Phil S. Baran
DOI:10.1038/s41586-022-04595-3
日期:2022.5.26
The study and application of transitionmetal hydrides (TMHs) has been an active area of chemical research since the early 1960s1, for energy storage, through the reduction of protons to generate hydrogen2,3, and for organic synthesis, for the functionalization of unsaturated C–C, C–O and C–N bonds4,5. In the former instance, electrochemical means for driving such reactivity has been common place since
New Aldehydes by Catalytic Diene Cycloisomerisations
作者:Fanny Grau、J. Carles Bayón、Pedro A. Aguirre、Teodor Parella、Elisabet Duñach
DOI:10.1002/ejoc.200700881
日期:2008.3
The Rh-catalysed hydroformylation of isopropylidenecyclohexane derivatives obtained by intramolecular diene cyclisations affords the corresponding aldehydes in good yields and in a completely chemo- and regioselective manner. Diastereoselectivities of ca. 90 % were achieved for all substrates when a bulky phosphite was used as the Rh ligand. Thestereochemical outcomes of the hydroformylation reactions