Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Ring Saturation without Hydrogenolysis

Rhodium hydroxide is also effective in ring saturation of the hydrogenolysis-sensitive hydroquinone dimethyl or diphenylether . Use of Rh-on-carbon as catalyst permits hydrogenation of naphthols to decalols [equation (d)] and of tetralones to decalols [equation (e)] without hydrogenolysis of alkoxy substituents. ... [Pg.233]

This extensive [(triphos)Ir] model chemistry demonstrates that all the necessary steps for the complete HDS of thiophene or for the hydrogenolysis of benzothiophene can be achieved without any need to previously saturate the heterocyclic ring, in agreement with one of the commonly invoked mechanisms in HDS catalysis - the desulfurization route - as discussed in Chapter 1. [Pg.105]

A microtechnique for the analysis of monoterpenoids consists of hydrogenolysis in the inlet port of a gas chromatograph and analysis of the saturated hydrocarbons. Certain ring cleavages occur, and p-alcohols lose their CH2OH group. The products obtained are identified by mass and i.r. spectrometry. The mass spectrometry of some monoterpenoid semicarbazones is reported many mechanisms are described, but without labelling evidence. ... [Pg.6]

See other pages where Ring Saturation without Hydrogenolysis is mentioned: [Pg.128]    [Pg.239]    [Pg.128]    [Pg.239]    [Pg.109]    [Pg.956]    [Pg.229]    [Pg.161]    [Pg.381]    [Pg.270]    [Pg.58]    [Pg.647]    [Pg.129]    [Pg.27]    [Pg.202]    [Pg.595]    [Pg.774]    [Pg.270]    [Pg.623]    [Pg.76]   


SEARCH



Ring hydrogenolysis

Ring saturation

Saturated rings

© 2024 chempedia.info