Reaction Mechanisms in Organic Synthesis Reaction Mechanisms in Organic Synthesis . By Rakesh Kumar Parashar (University of Delhi, India). John Wiley and Sons, Ltd.: Chichester. 2009. xx + 372 pp. $162.00. ISBN 978-1-4051-5072-9 .

Cobalamins (B12) play various important roles in vivo. Most B12-dependent enzymes are divided into three main subfamilies: adenosylcobalamin-dependent isomerases, methylcobalamin-dependent methyltransferases, and dehalogenases. Mimicking these B12 enzyme functions under non-enzymatic conditions offers good understanding of their elaborate reaction mechanisms. Furthermore, bio-inspiration offers a new approach to catalytic design for green and eco-friendly molecular transformations. As part of a study based on vitamin B12 derivatives including heptamethyl cobyrinate perchlorate, we describe biomimetic and bioinspired catalytic reactions with B12 enzyme functions. The reactions are classified according to the corresponding three B12 enzyme subfamilies, with a focus on our recent development on electrochemical and photochemical catalytic systems. Other important reactions are also described, with a focus on radical-involved reactions in terms of organic synthesis.

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Switching on palladium catalyst electrochemical removal from a palladium acetate–acetonitrile system via trace water addition

Green Chemistry ◽

10.1039/c9gc02258a ◽

2019 ◽

Vol 21 (17) ◽

pp. 4662-4672 ◽

Cited By ~ 4

Author(s):

Haytham E. M. Hussein ◽

Andrew D. Ray ◽

Julie V. Macpherson

Keyword(s):

Organic Synthesis ◽

Palladium Catalyst ◽

Palladium Acetate ◽

Pd Catalyst ◽

Synthesis Reaction ◽

Water Addition ◽

Trace Water ◽

Electrochemical Removal

Trace water addition drives the electrochemical removal of a Pd catalyst from organic synthesis reaction solutions.

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ChemInform Abstract: SELECTIVE REDUCTIONS. 33. POTASSIUM TRIISOPROPOXYBOROHYDRIDE AS A SELECTIVE REDUCING AGENT IN ORGANIC SYNTHESIS. REACTION WITH SELECTED ORGANIC COMPOUNDS CONTAINING REPRESENTATIVE FUNCTIONAL GROUPS

Chemischer Informationsdienst ◽

10.1002/chin.198432109 ◽

1984 ◽

Vol 15 (32) ◽

Author(s):

H. C. BROWN ◽

J. S. CHA ◽

B. NAZER ◽

S.-C. KIM ◽

S. KRISHNAMURTHY ◽

...

Keyword(s):

Functional Groups ◽

Organic Compounds ◽

Organic Synthesis ◽

Reducing Agent ◽

Synthesis Reaction

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Acyl iodides in organic synthesis. Reaction of acetyl iodide with thiols

Russian Journal of Organic Chemistry ◽

10.1134/s1070428011120013 ◽

2011 ◽

Vol 47 (12) ◽

pp. 1789-1791 ◽

Cited By ~ 1

Author(s):

M. G. Voronkov ◽

O. Yu. Grigor’eva ◽

N. N. Vlasova

Keyword(s):

Organic Synthesis ◽

Synthesis Reaction ◽

Acetyl Iodide

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Formation Mechanism of SrBi2Nb2O9 Prepared by Melting Salt Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.177.12 ◽

2010 ◽

Vol 177 ◽

pp. 12-15

Author(s):

Bao Rang Li ◽

Xing Tao Liu ◽

Yang Sheng Zheng ◽

Hui Bin Chang

Keyword(s):

Molten Salt ◽

Formation Mechanism ◽

Reaction Mechanisms ◽

Synthesis Method ◽

Molten Salt Synthesis ◽

Synthesis Reaction ◽

Simple Route ◽

Temperature Range ◽

Synthesis Route ◽

Molten Medium

In this paper SrBi2Nb2O9 was prepared by molten salt synthesis method and KCl chosen as molten medium. In order to disclose possible formation mechanism of SrBi2Nb2O9, a simple route was established for comparison by dividing the starting precursors into four groups. With the help of XRD, possible synthesis route was analyzed. The results showed that pure SrBi2Nb2O9 powders could be obtained at temperature higher than 700oC by molten salt synthesis. Intense synthesis reaction happened in the temperature range from 500 to 700oC. The reaction mechanisms of SrBi2Nb2O9 included four steps, namely the formation of 1) SrBi2O4 at close to 600oC,2) BiNbO4 from the reaction of at 600-700 oC, 3) SrBi2Nb2O9 from the reaction of SrBi2O4 and Nb2O5 and 4)SrBi2Nb2O9 from the reaction of BiNbO4 and SrCO3. The molten salt could improve distribution and reactivity of the precursors and significant formation of SrBi2Nb2O9.

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