Palladium‐Catalyzed Chemoselective α‐Arylation of Methyl Sulfones with Aryl Chlorides
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DOI: 10.1002/ajoc.201700075
Abstract: A palladium-catalyzed α-arylation reaction of unactivated sulfones with aryl chlorides is presented. High reactivity and chemoselectivity was achieved with a combination of Buchwald's 2nd generation palladium precatalyst and Kwong's indole-based phosphine ligand. A variety of aryl… read more here.
Keywords: methyl sulfones; arylation; sulfones aryl; palladium catalyzed ... See more keywords
A facile and efficient synthesis of 3‐cyanoindoles by a simple palladium(II)‐catalyzed C─H activation of indoles
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DOI: 10.1002/aoc.3706
Abstract: An efficient trans-PdCl2(NH2CH2COOH)2-catalyzed direct C3-cyanation of indole C─H bonds is described. Notably, free (N─H)-indoles reacted smoothly using the procedure, and the desired product 3-cyanoindoles were obtained in good to excellent yields. read more here.
Keywords: simple palladium; efficient synthesis; facile efficient; palladium catalyzed ... See more keywords
Palladium‐Catalyzed Aerobic Synthesis of Terminal Acetals from Vinylarenes Assisted by π‐Acceptor Ligands
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DOI: 10.1002/cctc.201601517
Abstract: Terminal acetals were synthesized from various vinylarenes and 1,2‐ or 1,3‐diols using a simple PdCl2(MeCN)2/methoxy‐p‐benzoquinone (MeOBQ)/CuCl catalyst system and 1 atm of O2 under mild reaction conditions by the anti‐Markovnikov nucleophilic attack of an oxygen nucleophile… read more here.
Keywords: aerobic synthesis; synthesis terminal; terminal acetals; palladium catalyzed ... See more keywords
Palladium‐Catalyzed Isomerization/(Cyclo)carbonylation of Pentenamides: a Mechanistic Study of the Chemo‐ and Regioselectivity
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DOI: 10.1002/cctc.201700345
Abstract: A new isomerizing ring‐closing amidocarbonylation reaction is reported using Pd catalysis with bulky diphosphane ligands. From terminal as well as internal pentenamide isomers (PAs), cyclic imides were obtained in good yield (92 %) with cationic Pd… read more here.
Keywords: isomerization cyclo; regioselectivity; study; isomerization ... See more keywords
Methanol Promoted Palladium‐Catalyzed Amine Formylation with CO2 and H2 by the Formation of HCOOCH3
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DOI: 10.1002/cctc.201801404
Abstract: The N‐formylation reaction of amines is one of the most effective measures to make the best use of CO2, since the formamides have widespread applications in industry. Herein, we performed the N‐formylation reaction over Mg−Al… read more here.
Keywords: formylation; co2; palladium catalyzed; methanol promoted ... See more keywords
Mechanism of Palladium‐Catalyzed Spiroannulation of Naphthols with Alkynes: A Density Functional Theory Study
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DOI: 10.1002/cctc.202000613
Abstract: Pd‐catalyzed spiroannulation of bromophenylnaphthalenols with acetylenes to achieve asymmetric dearomatization is a powerful way to construct chiral spiro‐compounds. DFT calculations with the M06 functional have been performed to reveal the mechanism and enantioselectivity of this… read more here.
Keywords: enantioselectivity; mechanism palladium; spiroannulation; catalyzed spiroannulation ... See more keywords
Palladium-Catalyzed Oxidation Reactions of Alkenes with Green Oxidants.
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DOI: 10.1002/cssc.201900397
Abstract: Transition-metal-catalyzed oxidative functionalization of alkenes has emerged as a powerful and valuable tool in modern organic synthesis. Recently, many methods have been established for the assembly of C-C and C-heteroatom bonds, which provides tremendous possibility… read more here.
Keywords: reactions alkenes; oxidation reactions; palladium catalyzed; catalyzed oxidation ... See more keywords
Synthesis of Phenanthridines through Palladium‐Catalyzed Cascade Reaction of 2‐Halo‐N‐Ms‐arylamines with Benzyl Halides/Sulfonates
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DOI: 10.1002/ejoc.201601608
Abstract: An efficient palladium-catalyzed nucleophilic substitution/C–H activation/aromatization cascade reaction between readily available 2-halo-N-Ms-arylamines (Ms = methanesulfonyl) and benzyl halides/sulfonates has been described. A wide variety of phenanthridines were synthesized in a one-pot fashion in moderate to… read more here.
Keywords: halo arylamines; cascade reaction; halides sulfonates; palladium catalyzed ... See more keywords
A Highly Regioselective Palladium‐Catalyzed O,S Rearrangement of Cyclic Thiocarbonates
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DOI: 10.1002/ejoc.201701181
Abstract: This work describes an operationally simple catalytic synthesis of cyclic S-thiocarbonates with predictable regioselectivity in good yields. The reaction utilizes substrates derived from ubiquitous 1,2-diols in an atom economical intramolecular rearrangement, catalysed by an inexpensive… read more here.
Keywords: cyclic thiocarbonates; catalyzed rearrangement; regioselective palladium; palladium catalyzed ... See more keywords
Palladium‐Catalyzed Dehydrogenative Coupling Reaction of Terminal Alkynes with Unactivated Alkenes
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DOI: 10.1002/jccs.201700268
Abstract: Terminal alkynes having a bulky substituent dehydrogenatively couple with unactivated terminal alkenes with catalysis of palladium. The terminal sp carbon forms a bond with the internal sp2 carbon of the alkene regioselectively to produce branched,… read more here.
Keywords: catalyzed dehydrogenative; reaction terminal; coupling reaction; terminal alkynes ... See more keywords
Palladium-Catalyzed Polycondensation for the Synthesis of Poly(Aryl)Sulfides.
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DOI: 10.1002/marc.202000067
Abstract: The palladium-catalyzed CS cross coupling reaction is investigated as a novel efficient tool for the synthesis of poly(phenyl)sulfide derivatives. The reaction proceeds through the polycondensation of dibromo arenes with a H2 S-surrogate to yield poly(aryl)sulfides.… read more here.
Keywords: synthesis poly; poly; palladium catalyzed; polycondensation ... See more keywords