Palladium-Catalyzed Long-Range Deconjugative Isomerization of Highly Substituted α,β-Unsaturated Carbonyl Compounds The long-range deconjugative isomerization of a broad range of α,β-unsaturated amides, esters, and ketones by an in situ generated palladium hydride catalyst is described. This redox-...
The strong acid co-catalyst ensures double-bond isomerization to occur faster than product formation, resulting in the same product mixture, irrespective of the use of terminal or internal pentenamides. The remaining challenge is to arrive at the desired adipimide by overcoming the undesirable ...
ChemInform Abstract: ISOMERIZATION OF HEPTANES OVER A PALLADIUM-ZEOLITE CATALYSTrearrangementshydrocarbons (acyclic compoundsNo abstract is available for this article.doi:10.1002/chin.197520148SAKAI, TOMOYAGOTO, MASAFUMIHATANO, KEIICHIROKATO, MANJIROWILEY‐VCH Verlag GmbHChemischer Informationsdienst...
This indicates that palladium does not serve as a catalyst in an organometallic reaction, but as a promoter of a free radical chain involving atom transfer. In contrast, an allylic iodide showed no tendency to produce radical chain products when treated with Pd(0)....
PdcatalystClPd(PPh) Cl3Si23296 100%α Pd(PPh)70 34 HSiCl3 MeClSiMeClSi 3-nn3-nn PdcatalystSiCl3 n=1or2β-adduct Scheme6 B.i.b.Palladium-CatalyzedHydrosilationofConjugatedDienesandAllenes.As reportedearlier,[6]HSiCl3underwenthydrosilationofbutadienetogivethe1:1product, VII.4PALLADIUM-CATALYZ...
ChemInform Abstract: One-Pot Synthesis of 2,4,5-Trisubstituted Imidazoles Using MoO3/SiO2, an Efficient and Recyclable Catalyst One-pot, three-component condensation of benzil/benzoin, substituted aromatic aldehydes, and ammonium acetate in an ethanol–water (1:1, v=v) solvent syste... SV Bhosa...
Here we present a palladium-catalysed oxidative amination reaction in which the addition of the nitrogen occurs at the less-substituted carbon of a double bond, in what is known as anti-Markovnikov selectivity. Alkenes are shown to react with imides in the presence of a palladate catalyst to ...
Application of an in situ generated bulky palladium(II) hydride catalyst obtained from a 1:1:1 mixture of Pd(dba)2, P(tBu)3, and isobutyryl chloride provides an efficient protocol for the isomerization and migration of a variety of olefins. In addition to the isomerization of (Z)- to (...
(Fig.4b). Aliphatic amines and 2-aminopyridine that inhibit the generation of active metal-hydride catalyst in hydroaminocarbonylation reactions, could be easily transformed into amides5g–5kand6g–6kin good to high yields in one-pot hydrochlorocarbonylation-amidation reactions. Additionally, as ...
We initiated the migratory allylic functionalization by studying reactions with an acyclic non-conjugated diene 1a as the pre-electrophile, diethyl malonate 2a as the pronucleophile, and Et3N as the base with a palladium catalyst (Fig. 2). A group of chiral ligands were first evaluated for their...