Palladium

About: Palladium is a research topic. Over the lifetime, 64719 publications have been published within this topic receiving 1357177 citations. The topic is also known as: Pd & element 46.

The heck reaction as a sharpening stone of palladium catalysis.

Abstract: s, or keywords if they used Heck-type chemistry in their syntheses, because it became one of basic tools of organic preparations, a natural way to

The Palladium‐Catalyzed Cross‐Coupling Reactions of Organotin Reagents with Organic Electrophiles [New Synthetic Methods (58)]

Abstract: The cross-coupling of organotin reagents with a variety of organic electrophiles, catalyzed by palladium, provides a novel method for generating a carbon-carbon bond. Because this mild, versatile reaction is tolerant of a wide variety of functional groups on either coupling partner, is stereospecific and regioselective, and gives high yields of product, it is ideal for use in the synthesis of elaborate organic molecules. When the coupling reaction is carried out in the presence of carbon monoxide, instead of a direct coupling, carbon monoxide insertion takes place, stitching the two coupling partners together and generating a ketone.

Handbook of organopalladium chemistry for organic synthesis

Abstract: PREFACE. CONTRIBUTORS. INTRODUCTION AND BACKGROUND. Historical Background of Organopalladium Chemistry Fundamental Properties of Palladium and Patterns of the Reactions of Palladium and Its Complexes. PALLADIUM COMPOUNDS: STOICHIOMETRIC PREPARATION, IN SITU GENERATION, AND SOME PHYSICAL AND CHEMICAL PROPERTIES. Background for Part II. Pd(0) and Pd(II) Compounds Without Carbon-Palladium Bonds. Organopalladium Compounds Containing Pd(0) and Pd(II). Palladium Complexes Containing Pd(I), Pd(III), or Pd(IV). PALLADIUM-CATALYZED REACTIONS INVOLVING REDUCTIVE ELIMINATION. Background for Part III. Palladium-Catalyzed Carbon-Carbon Cross-Coupling. Palladium-Catalyzed Carbon-Hydrogen and Carbon- Heteroatom Coupling. PALLADIUM-CATALYZED REACTIONS INVOLVING CARBOPALLADATION. Background for Part IV. The Heck Reaction (Alkene Substitution via Carbopalladation- Dehydropalladation) and Related Carbopalladation Reactions. Palladium-Catalyzed Tandem and Cascade Carbopalladation of Alkynes and 1,1-Disubstituted Alkenes. Allylpalladation and Related Reactions of Alkenes, Alkynes, Dienes, and Other -Compounds. Alkynyl Substitution via Alkynylpalladation-Reductive Elimination. Arene Substitution via Addition-Elimination. Carbopalladation of Allenes. Synthesis of Natural Products via Carbopalladation. Cyclopropanation and Other Reactions of Palladium-Carbene (and Carbyne) Complexes. Carbopalladation via Palladacyclopropanes and Palladacyclopropenes. Palladium-Catalyzed Carbozincation. PALLADIUM-CATALYZED REACTIONS INVOLVING NUCLEOPHILIC ATTACK ON LIGANDS. Background for Part V. Palladium-Catalyzed Nucleophilic Substitution Involving Allylpalladium, Propargylpalladium, and Related Derivatives. Palladium-Catalyzed Reactions Involving Nucleophilic Attack on -Ligands of Palladium-Alkene, Palladium-Alkyne, and Related Derivatives. PALLADIUM-CATALYZED CARBONYLATION AND OTHER RELATED REACTIONS INVOLVING MIGRATORY INSERTION. Background for Part VI. Migratory Insertion Reactions of Alkyl-, Aryl-, Alkenyl-, and Alkynylpalladium Derivatives Involving Carbon Monoxide and Related Derivatives. Migratory Insertion Reactions of Allyl, Propargyl, and Allenylpalladium Derivatives Involving Carbon Monoxide and Related Derivatives. Acylpalladation and Related Addition Reactions. Other Reactions of Acylpalladium Derivatives. Synthesis of Natural Products via Palladium-Catalyzed Carbonylation. Palladium-Catalyzed Carbonylative Oxidation. Synthesis of Oligomeric and Polymeric Materials via Palladium-Catalyzed Successive Migratory Insertion of Isonitriles. CATALYTIC HYDROGENATION AND OTHER PALLADIUM-CATALYZED REACTIONS VIA HYDROPALLADATION, METALLOPALLADATION, AND OTHER RELATED SYN ADDITION REACTIONS WITHOUT CARBON-CARBON BOND FORMATION OR CLEAVAGE. Background for Part VII. Palladium-Catalyzed Hydrogenation. Palladium-Catalyzed Isomerization of Alkenes, Alkynes, and Related Compounds without Skeletal Rearrangements. Palladium-Catalyzed Hydrometallation. Metallopalladation. Palladium-Catalyzed Syn-Addition Reactions of X-Pd Bonds (X = Group 15, 16, and 17 Elements). PALLADIUM-CATALYZED OXIDATION REACTIONS THAT HAVE NOT BEEN DISCUSSED IN EARLIER PARTS. Background for Part VIII. Oxidation via Reductive Elimination of Pd(II) and Pd(IV) Complexes. Palladium-Catalyzed or -Promoted Oxidation via 1,2- or 1,4-Elimination. Other Miscellaneous Palladium-Catalyzed or -Promoted Oxidation Reactions. REARRANGEMENT AND OTHER MISCELLANEOUS REACTIONS CATALYZED BY PALLADIUM. Background for Part IX. Rearrangement Reactions Catalyzed by Palladium. TECHNOLOGICAL DEVELOPMENTS IN ORGANOPALLADIUM CHEMISTRY. Aqueous Palladium Catalysis. Palladium Catalysts Immobilized on Polymeric Supports. Organopalladium Reactions in Combinatorial Chemistry. REFERENCES. General Guidelines on References Pertaining to Palladium and Organopalladium Chemistry. Books (Monographs). Reviews and Accounts (as of September 1999). SUBJECT INDEX.

Carbon-Carbon Coupling Reactions Catalyzed by Heterogeneous Palladium Catalysts

Abstract: 4.4. Pd on Modified Silica 159 4.5. Pd on Clay and Other Inorganic Materials 159 5. Stille, Fukuyama, and Negishi Reactions 159 5.1. Stille Reactions 159 5.1.1. Pd on Carbon (Pd/C) 159 5.1.2. Palladium on KF/Al2O3 159 5.1.3. Pd on Modified Silica (SiO2/TEG/Pd) 159 5.2. Fukuyama Reactions 159 5.2.1. Pd on Carbon (Pd/C) 159 5.2.2. Pd(OH)2 on Carbon (Perlman’s Catalyst) 160 5.3. Pd/C-Catalyzed Negishi Reactions 160 6. Ullmann-Type Coupling Reactions 161 6.1. Pd/C-Catalyzed Aryl−Aryl Coupling 161 6.2. Pd/C-Catalyzed Homocoupling of Vinyl Halides 162

C–C, C–O and C–N bond formation via rhodium(III)-catalyzed oxidative C–H activation

Abstract: Rhodium(III)-catalyzed direct functionalization of C-H bonds under oxidative conditions leading to C-C, C-N, and C-O bond formation is reviewed. Various arene substrates bearing nitrogen and oxygen directing groups are covered in their coupling with unsaturated partners such as alkenes and alkynes. The facile construction of C-E (E = C, N, S, or O) bonds makes Rh(III) catalysis an attractive step-economic approach to value-added molecules from readily available starting materials. Comparisons and contrasts between rhodium(III) and palladium(II)-catalyzed oxidative coupling are made. The remarkable diversity of structures accessible is demonstrated with various recent examples, with a proposed mechanism for each transformation being briefly summarized (critical review, 138 references).