[3,3] Sigmatropic Rearrangement Versus [2+2] Cycloaddition: A DFT Investigation of Formal SN2′ Substitution of Imido Metal Complexes with Allylic Electrophiles. Catalyzed by a [C,N] and a [C,C] Cyclometalated Organoiridium Complex at Room Temperature in Water Number of times cited according to CrossRef: Ruthenium-Benzimidazole complex: Structural, optical and Solvent-free catalytic studies. Browse other articles of this reference work: The full text of this article hosted at iucr.org is unavailable due to technical difficulties. : A Mechanistic Study Hydrogen Production and Remediation of Carbon and Pollutants. Hence, option B is correct. In line with experimental results, the resting state of the catalyst was predicted to be a ruthenium trihydride complex. in the presence of solid brass spheres, 1/8 in. For terms and use, please refer to our Terms and Conditions Series A, Containing Papers of a Mathematical and Physical Character, Read Online (Free) relies on page scans, which are not currently available to screen readers. 2 in diameter. Electron-Rich PNP- and PNN-Type Ruthenium(II) Hydrido Borohydride Pincer Complexes. Hydrogen Evolution from Aliphatic Alcohols and 1,4-Selective Hydrogenation of NAD Learn about our remote access options. 2 Hydrogen Generation from Formic Acid and Alcohols. All Rights Reserved. Computational mechanistic studies of acceptorless dehydrogenation reactions catalyzed by transition metal complexes. JSTOR is part of ITHAKA, a not-for-profit organization helping the academic community use digital technologies to preserve the scholarly record and to advance research and teaching in sustainable ways. Primary and secondary alcohols show a type of beta-elimination in which − O H group from alfa and hydrogen from beta carbon. * . The catalytic cycle of the dehydrogenation process involves an intermolecular proton transfer from the methanol substrate to the catalyst followed by the release of dihydrogen. . The conversion of esters to alcohols may proceed either by hydrogenation or by hydrogenolysis. This chapter deals almost exclusively with this catalyst, However, certain other catalysts of limited usefulness are considered. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, By continuing to browse this site, you agree to its use of cookies as described in our, I have read and accept the Wiley Online Library Terms and Conditions of Use, https://doi.org/10.1002/0471264180.or008.01. There is no experimental basis for the choice of one hypothesis over another, the use of the term hydrogenation in this chapter is matter of convenience and does not imply a choice of mechanism. Simple and Efficient Ruthenium‐Catalyzed Oxidation of Primary Alcohols with Molecular Oxygen. A Green Approach to Ethyl Acetate: Quantitative Conversion of Ethanol through Direct Dehydrogenation in a Pd–Ag Membrane Reactor. 155 values being 16,700 and 6,700 with a mean of 11,800 calories. Alcohols are unreactive and require strong inorganic oxidants to convert to synthetically useful carbonyl compounds. To access this article, please. Selective Homogeneous Hydrogenation of Biogenic Carboxylic Acids with [Ru(TriPhos)H] Cleavage and Diastereoselective Synthesis of Mono- and Dilignol β-O-4 Model Compounds. The conversion of esters to alcohols may proceed either by hydrogenation or by hydrogenolysis. If you do not receive an email within 10 minutes, your email address may not be registered, Transmetallation Versus β‐Hydride Elimination: The Role of 1,4‐Benzoquinone in Chelation‐Controlled Arylation Reactions with Arylboronic Acids. Proceedings of the Royal Society of London. p Synthesis, Structure, and Catalytic Dehydrogenation of Alcohols and Hydrogenation of Esters, chem_201000593_sm_miscellaneous_information.pdf. and you may need to create a new Wiley Online Library account. Well‐Defined Ruthenium Complex for Acceptorless Alcohol Dehydrogenation in Aqueous Medium. It is shown that the dehydrogenation reaction preferentially proceeds through pathways in which the catalyst is ligated by two phosphine ligands. ©2000-2020 ITHAKA. Series A, Containing Papers of a Mathematical and Physical Character α Organometallic reactivity: the role of metal–ligand bond energies from a computational perspective. The Society’s fundamental purpose, reflected in its founding Charters of the 1660s, is to recognise, promote, and support excellence in science and to encourage the development and use of science for the benefit of humanity. O This item is part of JSTOR collection Such documents are peer‐reviewed, but not copy‐edited or typeset. and you may need to create a new Wiley Online Library account. Request Permissions. -hydroxy carboxylic acids) and alcohol–ammonia coupling in aqueous media catalysed by water-soluble bipyridine-Cp If you do not receive an email within 10 minutes, your email address may not be registered, Please check your email for instructions on resetting your password. Fuels From Biomass: An Interdisciplinary Approach. There is no experimental basis for the choice of one hypothesis over another, the use of the term hydrogenation in this chapter is matter of convenience and does not imply a choice of mechanism. . They are made available as submitted by the authors. Three pathways were considered in which the ruthenium catalyst was ligated by either two or three phosphine ligands. © 1921 Royal Society Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. The Society has played a part in some of the most fundamental, significant, and life-changing discoveries in scientific history and Royal Society scientists continue to make outstanding contributions to science in many research areas. Proceedings of the Royal Society of London. On catalytic dehydrogenation, p rimary alcohols give aldehydes, secondary alcohols give ketones and t ertiary alcohols give alkene. Cyclization of Aromatic Propargyl Alcohol with a Thiophene Group Yielding Naphthothiophene Aldehyde Induced by a Ruthenium Complex. Selective oxidation of benzyl alcohol catalyzed by ruthenium (III) complexes derived from tridentate mer-ligands having phenolato donor. Reactivity of metal oxide clusters with hydrogen peroxide and water – a DFT study evaluating the performance of different exchange–correlation functionals.