THE CHEMISTRY OF PENTAVALENT ORGANOBISMUTH REAGENTS.: Part IX. CLEAVAGE REACTIONS OF α-GLYCOLS

1996 ◽  
pp. 744-750
Author(s):  
Derek H. R. Barton ◽  
Jean-Pierre Finet ◽  
William B. Motherwell ◽  
Clotilde Pichon
Keyword(s):  
Cleavage Reactions

Hydrogenation-dehydrogenation and cleavage functions of hydrorefining catalysts studied by the reaction of tetrahydrothiophene

1986 ◽  
Vol 51 (12) ◽  
pp. 2770-2780 ◽  
Author(s):  
Alexandra Drahorádová ◽  
Miroslav Zdražil
Keyword(s):  
Activated Carbon ◽  
Catalyst Surface ◽  
Bond Cleavage ◽  
Unsaturated Hydrocarbons ◽  
Cleavage Reactions

The reaction of tetrahydrothiophene in a stream of nitrogen was used to study the relations between dehydrogenation and C-S cleavage reactions on sulphided Co-Mo/Al2O3 catalysts. The course of the reaction was compared for Co-Mo catalysts supported on alumina and activated carbon, for alumina alone as well as for a Pt/C catalyst. The effect of substitution of nitrogen for hydrogen, of the addition of water to the feed, of pre-sulphidation of catalysts and their deactivation by coking on the rate and selectivity of the reaction were also investigated. The results showed that hydrogenation-dehydrogenation and dehydrosulphurization activity of the sulphide catalysts have the same origin. Hydrogen accelerates dehydrosulphurization on the sulphide catalysts by removing sulphur and unsaturated hydrocarbons formed on catalyst surface by C-S bond cleavage reactions.

Cleavage of the Epimines of 1,6-Anhydrohexoses with Fluoride Anion

2005 ◽  
Vol 70 (12) ◽  
pp. 2075-2085 ◽  
Author(s):  
Jiří Kroutil ◽  
Klára Jeništová
Keyword(s):  
Fluoride Anion ◽  
Ring Cleavage ◽  
Protecting Group ◽  
Reaction Conditions ◽  
Aziridine Ring ◽  
Cleavage Reactions ◽  
Derivatives Of ◽  
Fluoro Derivatives

Aziridine ring cleavage reactions of five N-nosylepimines (2-6) having D-talo, D-galacto, D-manno, and D-allo configurations with potassium hydrogendifluoride under various reaction conditions have been performed. The cleavage regioselectively afforded diaxial isomers of vicinal amino-fluoro derivatives of 1,6-anhydro-β-D-gluco- and mannopyranose 7-11 in 51-94% yields. Removal of 2-nitrobenzenesulfonyl protecting group with benzenethiol has been attempted in the case of compound 10.

scholarly journals Reaction Mechanisms and Rate Constants of Auto‐Catalytic Urethane Formation and Cleavage Reactions

ChemistryOpen ◽  
2021 ◽  
Author(s):  
Christoph Gertig ◽  
Eric Erdkamp ◽  
Andreas Ernst ◽  
Carl Hemprich ◽  
Leif C. Kröger ◽  
...  
Keyword(s):  
Rate Constants ◽  
Reaction Mechanisms ◽  
Urethane Formation ◽  
Cleavage Reactions

Cleavage Reactions of the Silicon-Silicon Bond of Hexaphenyldisilane

1966 ◽  
Vol 31 (9) ◽  
pp. 3047-3048 ◽  
Author(s):  
Tsu Tzu Tsai ◽  
W. L. Lehn ◽  
C. J. Marshall
Keyword(s):  
Cleavage Reactions ◽  
Silicon Silicon

Reactions of 1,8-bis(diphenylphosphino)naphthalene with ruthenium cluster carbonyls: C–H and C–P bond cleavage reactions

2004 ◽  
Vol 357 (6) ◽  
pp. 1805-1812 ◽  
Author(s):  
Michael I. Bruce ◽  
Paul A. Humphrey ◽  
Sakir Okucu ◽  
Reinhard Schmutzler ◽  
Brian W. Skelton ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Ruthenium Cluster ◽  
Cleavage Reactions
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