Selective Aerobic Oxidation of Methylarenes to Benzaldehydes Catalyzed by N ‐Hydroxyphthalimide and Cobalt(II) Acetate in Hexafluoropropan‐2‐ol
: Efficient and highly selective catalytic conditions for the aerobic autoxidation of methylarenes to benzaldehydes, based on N ‐hydroxyphthalimide (NHPI) and cobalt(II) acetate in 1,1,1,3,3,3‐hexafluoropropan‐2‐ol (HFIP), were developed. (Source: Organometallic Current)
Source: Organometallic Current - April 24, 2017 Category: Chemistry Tags: Co catalyzed oxidation Oxygen Source Type: blogs
Cobalt-Catalyzed Allylic C(sp3) –H Carboxylation with CO2
: Cobalt-Catalyzed Allylic C(sp3) –H Carboxylation with CO2Catalytic carboxylation of the allylic C(sp3) –H bond of terminal alkenes with CO2 was developed with the aid of a Co/Xantphos complex. (Source: Organometallic Current)
Source: Organometallic Current - April 21, 2017 Category: Chemistry Tags: Allylic Carbon dioxide Carboxylation Co catalyzed Source Type: blogs
Cobalt-Catalyzed 1,1-Diboration of Terminal Alkynes: Scope, Mechanism, and Synthetic Applications - Journal of the American Chemical Society (ACS Publications)
A cobalt-catalyzed method for the 1,1-diboration of terminal alkynes with bis(pinacolato)diboron (B2Pin2) is described. (Source: Organometallic Current)
Source: Organometallic Current - March 2, 2017 Category: Chemistry Tags: boration Co catalyzed Source Type: blogs
(Aminomethyl)pyridine Complexes for the Cobalt ‐Catalyzed Anti‐Markovnikov Hydrosilylation of Alkoxy‐ or Siloxy(vinyl)silanes with Alkoxy‐ or Siloxyhydrosilanes
: Cobalt ‐catalyzed anti‐Markovnikov reactions that involve siloxy‐ or alkoxy(vinyl)silanes and siloxy‐ or alkoxyhydrosilanes are disclosed. More than 25 new cobalt–(aminomethyl)pyridine complexes were developed... (Source: Organometallic Current)
Source: Organometallic Current - February 20, 2017 Category: Chemistry Tags: Anti Morkovnikov Co catalyzed Hydrosilylation Source Type: blogs
A General and Highly Selective Cobalt ‐Catalyzed Hydrogenation of N‐Heteroarenes under Mild Reaction Conditions
: Herein, a general and efficient method for the homogeneous cobalt ‐catalyzed hydrogenation of N‐heterocycles, under mild reaction conditions, is reported. Key to success is the use of the tetradentate ligand... (Source: Organometallic Current)
Source: Organometallic Current - February 15, 2017 Category: Chemistry Tags: Co catalyzed Hydrogenation Source Type: blogs
C(sp2) –H Borylation of Fluorinated Arenes Using an Air-Stable Cobalt Precatalyst: Electronically Enhanced Site Selectivity Enables Synthetic Opportunities - Journal of the American Chemical Society (ACS Publications)
Cobalt catalysts with electronically enhanced site selectivity have been developed, as evidenced by the highortho-to-fluorine selectivity observed in the C(sp2) –H borylation of fluorinated arenes. (Source: Organometallic Current)
Source: Organometallic Current - February 15, 2017 Category: Chemistry Tags: Borylation Co catalyzed Source Type: blogs
Cobalt ‐Catalyzed Enantio‐ and Diastereoselective Intramolecular Hydroacylation of Trisubstituted Alkenes
: Enantio ‐ and diastereoselective synthesis of trans‐2,3‐disubstituted indanones is achieved by intramolecular hydroacylation of 2‐alkenylbenzaldehydes bearing trisubstituted alkenyl groups under cobalt‐chiral... (Source: Organometallic Current)
Source: Organometallic Current - February 10, 2017 Category: Chemistry Tags: Co catalyzed Enantioselective Source Type: blogs
Acceptorless Dehydrogenation of N ‐Heterocycles by Merging Visible‐Light Photoredox Catalysis and Cobalt Catalysis
: Herein, the first acceptorless dehydrogenation of tetrahydroquinolines (THQs), indolines, and other related N ‐heterocycles, by merging visible‐light photoredox catalysis and cobalt catalysis at ambient... (Source: Organometallic Current)
Source: Organometallic Current - February 10, 2017 Category: Chemistry Tags: Co catalyzed Photoredox Catalysis Ru catalyzed Visible light Source Type: blogs
Regio ‐ and Enantioselective Cobalt‐Catalyzed Sequential Hydrosilylation/Hydrogenation of Terminal Alkynes
: A highly regio ‐ and enantioselective cobalt‐catalyzed sequential hydrosilylation/hydrogenation of alkynes was developed to afford chiral silanes. This one‐pot method is operationally simple and atom economic.... (Source: Organometallic Current)
Source: Organometallic Current - November 30, 2016 Category: Chemistry Tags: Co catalyzed Enantioselective Hydrosilylation Source Type: blogs
Whip It Good
A 29-year-old man presented to the emergency department with numbness and tingling of his entire body for three weeks. He said the symptoms started when he entered a drug rehab facility for benzodiazepine and opiate abuse, and that the last time he used either drug was more than a month ago. His initial vitals demonstrated a heart rate of 106 bpm, blood pressure of 115/70 mm Hg, temperature of 98.6°F, respiratory rate of 14 bpm, and SPO2 of 99% on room air.He is well nourished, alert, and oriented but anxious-appearing. His neurologic exam demonstrates no ataxia on ambulation with cranial nerves II-XII intact. His motor e...
Source: The Tox Cave - October 3, 2016 Category: Emergency Medicine Tags: Blog Posts Source Type: blogs
Influence of CAD/CAM on the fit accuracy of implant-supported zirconia and cobalt-chromium fixed dental prostheses
ConclusionsWhen all of the screws were tightened, the CAD/CAM frameworks exhibited better fit accuracy compared with the conventionally fabricated frameworks. High levels of passive fit were achieved for the evaluated techniques.Supported by Neodent and Laboratory LTN. (Source: Dental Technology Blog)
Source: Dental Technology Blog - January 14, 2015 Category: Dentists Source Type: blogs
Cobalt(II)-Catalyzed Asymmetric Olefin Cyclopropanation with α-Ketodiazoacetates
Angewchem
Cobalt(II)-Catalyzed Asymmetric Olefin Cyclopropanation with α-Ketodiazoacetates
Dr. Xue Xu, Dr. Shifa Zhu, Dr. Xin Cui, Dr. Lukasz Wojtas and Prof. Dr. X. Peter Zhang (Source: Organometallic Current)
Source: Organometallic Current - October 3, 2013 Category: Chemists Tags: Co catalyzed Cyclopropanation Source Type: blogs
Asymmetric Copolymerization of CO2 with meso-Epoxides Mediated by Dinuclear Cobalt
Angewchem
Asymmetric Copolymerization of CO2 with meso-Epoxides Mediated by Dinuclear Cobalt(III) Complexes: Unprecedented Enantioselectivity and Activity
Ye Liu, Wei-Min Ren, Jie Liu and Prof. Dr. Xiao-Bing Lu (Source: Organometallic Current)
Source: Organometallic Current - September 30, 2013 Category: Chemists Tags: Copolymerization Co catalyzed Source Type: blogs
Cobalt-Mediated Silylation of Benzylic C-H Bonds
Angewchem
Anchoring of Silyl Donors on a N-Heterocyclic Carbene through the Cobalt-Mediated Silylation of Benzylic C-H Bonds
Zhenbo Mo, Yang Liu and Prof. Dr. Liang Deng (Source: Organometallic Current)
Source: Organometallic Current - August 20, 2013 Category: Chemists Tags: NHC Co mediated Source Type: blogs
Ligand-Accelerated Iron- and Cobalt-Catalyzed Cross-Coupling Reactions
Angewchem
Ligand-Accelerated Iron- and Cobalt-Catalyzed Cross-Coupling Reactions between N-Heteroaryl Halides and Aryl Magnesium Reagents
Dipl.-Chem. Olesya M. Kuzmina, Dipl.-Chem. Andreas K. Steib, Dr. John T. Markiewicz, Dr. Dietmar Flubacher and Prof. Dr. Paul Knochel (Source: Organometallic Current)
Source: Organometallic Current - March 25, 2013 Category: Chemists Tags: Co catalyzed Cross Coupling Fe catalyzed Source Type: blogs
