Big Chemical Encyclopedia

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

Articles Figures Tables About

Hydrogen continued

TABLE 7.20 Absorption Frequencies of Single Bonds to Hydrogen Continued)... [Pg.731]

A mixture of 53.5 g (0.5 mol) of cyclopentylideneacetonitrile dissolved in 50 cc of absolute ethanol and 0.5 g of a palladium-carbon catalyst is hydrogenated with hydrogen at a pressure of about 40 lb for about 3 hours. An additional amount of 0.8 g of palladium-carbon catalyst is then added and the hydrogenation continued for about 4 hours during which time the reduction is substantially completed and the cyclopentylideneacetonitrile is converted to cyclopentylacetonitrile. The reaction mixture is filtered to remove the catalyst and the alcohol is evaporated in vacuo. [Pg.412]

Catalysts for ketone hydrogenation continue to be developed but one of the best systems is still the BINAP-DPEN catalyst first reported by Ohkuma et al. in 1995. " In this system ruthenium is combined with both a chiral diphosphine and a chiral diamine, forming an octahedral complex which gives a high degree of enantioselectivity. This stereoselectivity is considered to be a result of the synergistic effect of the chiral diphosphine and diamine ligands. [Pg.13]

When small increments of nitrobenzene were added to CoH containing added alkali, 4.3 atoms of hydrogen were absorbed per mole of substrate. The reduction was catalytic, the absorption of hydrogen continuing beyond a H/Co value of 2.0. The addition of excess substrate to CoH containing added alkali resulted in the absorption of only a small quantity of hydrogen. [Pg.217]


See other pages where Hydrogen continued is mentioned: [Pg.244]    [Pg.321]    [Pg.322]    [Pg.1128]    [Pg.89]    [Pg.559]    [Pg.149]    [Pg.129]    [Pg.149]    [Pg.89]    [Pg.444]    [Pg.513]    [Pg.590]    [Pg.591]    [Pg.1397]    [Pg.27]    [Pg.121]    [Pg.123]    [Pg.134]    [Pg.48]    [Pg.316]    [Pg.60]    [Pg.121]    [Pg.89]   


SEARCH



Acidity continued hydrogen cyanide

Acidity continued hydrogen halides

Alkenes continued) hydrogen halides

Alkenes continued) hydrogenation

Azines—continued cage effect during hydrogen bonding

Azines—continued hydrogen bonding, effect on reactivity

Catalytic hydrogenation, continuous

Continuous catalytic hydrogenation liquid-phase

Continuous catalytic hydrogenation vapor-phase

Hydrogen atom continuous spectrum

Hydrogen bond , continued

Hydrogen bond , continued water

Hydrogen bonding (continued

Hydrogen bonding (continued acids

Hydrogen bonding (continued carboxylic acid dimers

Hydrogen bonding (continued cellulose

Hydrogen bonding (continued diols

Hydrogen bonding (continued intermolecular

Hydrogen bonding (continued intramolecular

Hydrogen bonding (continued nucleic acids

Hydrogen bonding (continued steroids

Hydrogen bonding (continued trans-bonded

Hydrogen continued Tetralin

Hydrogen continued coals

Hydrogen continued diffusion

Hydrogen continued exchange

Hydrogen continued hardness

Hydrogen continued high-pressure

Hydrogen continued high-temperature corrosion

Hydrogen continued isopropyl

Hydrogen continued liquefaction

Hydrogen continued orbital levels

Hydrogen continued short-residence-time

Hydrogen continued solvent

Hydrogen continued sources

Hydrogen continued specificity

Hydrogen continued transfer

Hydrogen continued) reaction with oxygen

Hydrogen separation continued)

Hydrogen separation continued) Membrane Reactor

Hydrogen separation continued) Technologies

Hydrogen separation continued) cells

Hydrogen separation continued) dehydrogenation

Hydrogen separation continued) oxidation

Hydrogen separation continued) silica

Hydrogen separation continued) with oxidative

Hydrogen separation continued) zeolite

Hydrogenation continuous

Hydrogenation continuous catalytic process

Iron continued hydrogen evolution

Nucleophilic substitution—continued hydrogen bonding to azine-nitrogen

Nucleophilic substitution—continued hydrogen bonding, effect of in carboaromatics

Oxidation—continued with hydrogen peroxide

Polybutadiene - continued hydrogenation

Pyridines—continued hydrogen-bonding

Steels continued hydrogen embrittlement

Water (continued hydrogen bonding

© 2024 chempedia.info