Oxidative addition of N-halosuccinimides to palladium(0): the discovery of neutral palladium(II) imidate complexes, which enhance Stille coupling of allylic and benzylic halides
作者:Catherine M. Crawforth、Suzanne Burling、Ian J.S. Fairlamb、Anant R. Kapdi、Richard J.K. Taylor、Adrian C. Whitwood
DOI:10.1016/j.tet.2005.06.080
日期:2005.10
mediate the Stille coupling of allylic and benzylichalides with alkenyl, aryl and allyl stannanes. In competition experiments between 4-nitrobromobenzene and benzyl bromide with a cis-stannylvinyl ester, (Ph3P)2Pd(N-Succ)Br preferentially cross-couples benzyl bromide, whereas with other commonly employed precatalysts 4-nitrobromobenzene undergoes preferential cross-coupling. Furthermore, preferential
Ester homologation via .alpha.-bromo .alpha.-keto dianion rearrangement
作者:Conrad J. Kowalski、M. Serajul Haque、Kevin W. Fields
DOI:10.1021/ja00291a063
日期:1985.3
Homologation des esters RCO 2 Et (dans lesquels le groupe R est primaire, secondaire, tertiaire, aryl, alcenyl, alcynyl) et de quelques lactones par traitement avec le dibromomethyllithium
Homologation desesters RCO 2 Et (dans lesquels le groupe Rest primaire, secondaire, tertiaire, aryl, alcenyl, alcynyl) et de quelques lactones par traitement avec le dibromomethyllithium
Substitution nucleophile vinylique par le reactif de reformatsky catalysee par des complexes du nickel et du palladium zerovalents. Synthese d'esters β,γ-ethyleniques
作者:J.F. Fauvarque、A. Jutand
DOI:10.1016/s0022-328x(00)88980-9
日期:1981.4
Zerovalent complexes of palladium and nickel catalyse vinylic nucleophilic substitution by the Reformatsky reagent giving β,γ-ethylenic esters. Formation of a σ-vinylpalladium complex is the rate-determining step of the reaction.
Carbon-carbon bond forming reactions of rhenium enolates with terminal alkynes. Evidence for an alkyne C-H oxidative addition mechanism and observation of highly stereoselective base-catalyzed proton transfer reactions in rhenium metallacycles
作者:Jeffrey G. Stack、Robert D. Simpson、Frederick J. Hollander、Robert G. Bergman、Clayton H. Heathcock
DOI:10.1021/ja00163a038
日期:1990.3
Reactions des complexes (MeCN)(OC) 3 (PPh 3 )ReCh(R 2 )CO(R 1 ) (R 1 =OEt, R 2 =H; R 1 =OEt, R 2 =Me; R 1 =NEt 2 , R 2 =H) avec des alcynes-1
复合物反应 (MeCN)(OC) 3 (PPh 3 )ReCh(R 2 )CO(R 1 ) (R 1 =OEt, R 2 =H; R 1 =OEt, R 2 =Me; R 1 =NEt 2 , R 2 =H) avec des alcynes-1
Thermal defect engineering of precious group metal–organic frameworks: impact on the catalytic cyclopropanation reaction
作者:Werner R. Heinz、Raphael Junk、Iker Agirrezabal-Telleria、Bart Bueken、Hana Bunzen、Thorsten Gölz、Mirza Cokoja、Dirk De Vos、Roland A. Fischer
DOI:10.1039/d0cy01479f
日期:——
This work highlights the catalytic cyclopropanation and its characteristics as a novel analytical tool to investigate complex MOF structures.