Literature DB >> 25427140

The reaction of cobaloximes with hydrogen: products and thermodynamics.

Deven P Estes1, David C Grills, Jack R Norton.   

Abstract

A cobalt hydride has been proposed as an intermediate in many reactions of the Co(dmgBF2)2L2 system, but its observation has proven difficult. We have observed the UV-vis spectra of Co(dmgBF2)2L2 (1) in CH3CN under hydrogen pressures of up to 70 atm. A Co(I) compound (6a) with an exchangeable proton is eventually formed. We have determined the bond dissociation free energy and pK(a) of the new O-H bond in 6a to be 50.5 kcal/mol and 13.4, respectively, in CH3CN, matching previous reports.

Entities:  

Year:  2014        PMID： 25427140     DOI： 10.1021/ja508200g

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  19 in total

1.  H· Transfer-Initiated Synthesis of γ-Lactams: Interpretation of Cycloisomerization and Hydrogenation Ratios.

Authors:  Chris Lorenc; Hunter B Vibbert; Chengbo Yao; Jack R Norton; Michael Rauch
Journal:  ACS Catal       Date:  2019-10-09       Impact factor: 13.084

2.  Synthetic Applications of Proton-Coupled Electron Transfer.

Authors:  Emily C Gentry; Robert R Knowles
Journal:  Acc Chem Res       Date:  2016-07-29       Impact factor: 22.384

3.  Catalyzing the Hydrodefluorination of CF3-Substituted Alkenes by PhSiH3. H• Transfer from a Nickel Hydride.

Authors:  Chengbo Yao; Shuai Wang; Jack Norton; Matthew Hammond
Journal:  J Am Chem Soc       Date:  2020-01-24       Impact factor: 15.419

4.  Bond-weakening catalysis: conjugate aminations enabled by the soft homolysis of strong N-H bonds.

Authors:  Kyle T Tarantino; David C Miller; Ted A Callon; Robert R Knowles
Journal:  J Am Chem Soc       Date:  2015-05-13       Impact factor: 15.419

5.  Ph(i-PrO)SiH2: An Exceptional Reductant for Metal-Catalyzed Hydrogen Atom Transfers.

Authors:  Carla Obradors; Ruben M Martinez; Ryan A Shenvi
Journal:  J Am Chem Soc       Date:  2016-03-30       Impact factor: 15.419

6.  Mechanistic Interrogation of Co/Ni-Dual Catalyzed Hydroarylation.

Authors:  Sophia L Shevick; Carla Obradors; Ryan A Shenvi
Journal:  J Am Chem Soc       Date:  2018-09-18       Impact factor: 15.419

Review 7.  Proton-Coupled Electron Transfer in Organic Synthesis: Fundamentals, Applications, and Opportunities.

Authors:  David C Miller; Kyle T Tarantino; Robert R Knowles
Journal:  Top Curr Chem (Cham)       Date:  2016-05-09

8.  Mn-, Fe-, and Co-Catalyzed Radical Hydrofunctionalizations of Olefins.

Authors:  Steven W M Crossley; Carla Obradors; Ruben M Martinez; Ryan A Shenvi
Journal:  Chem Rev       Date:  2016-07-27       Impact factor: 60.622

9.  Catalytic Cycloisomerization onto a Carbonyl Oxygen.

Authors:  Shicheng Shi; Jonathan L Kuo; Tao Chen; Jack R Norton
Journal:  Org Lett       Date:  2020-07-22       Impact factor: 6.005

10.  Microsecond X-ray Absorption Spectroscopy Identification of Co(I) Intermediates in Cobaloxime-Catalyzed Hydrogen Evolution.

Authors:  Grigory Smolentsev; Bianca Cecconi; Alexander Guda; Murielle Chavarot-Kerlidou; Jeroen A van Bokhoven; Maarten Nachtegaal; Vincent Artero
Journal:  Chemistry       Date:  2015-09-04       Impact factor: 5.236
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