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Of carbonyl group

A closely allied reductive linking of carbonyl groups is an intramolecular version with esters, called the ac doin reaction, which again gives a 1,2-diox rgenated skeleton ... [Pg.49]

These compounds have infrared spectra that are greatly complicated by harmonics and combination bands in the region of carbonyl group vibrations. [Pg.273]

Many compounds contain more than one functional group Prostaglandin Ei a hormone that regulates the relaxation of smooth muscles con tains two different kinds of carbonyl groups Classify each one (aldehyde ketone carboxylic acid ester amide acyl chloride or acid anhydride) Identify the most acidic proton in prostaglandin Ei and use Table 1 7 to estimate its pK ... [Pg.144]

The mechanisms of the Fischer esterification and the reactions of alcohols with acyl chlorides and acid anhydrides will be discussed m detail m Chapters 19 and 20 after some fundamental principles of carbonyl group reactivity have been developed For the present it is sufficient to point out that most of the reactions that convert alcohols to esters leave the C—O bond of the alcohol intact... [Pg.640]

The carbonyl carbon of a ketone bears two electron releasing alkyl groups an aldehyde carbonyl group has only one Just as a disubstituted double bond m an alkene is more stable than a monosubstituted double bond a ketone carbonyl is more stable than an aldehyde carbonyl We 11 see later m this chapter that structural effects on the relative stability of carbonyl groups m aldehydes and ketones are an important factor m then rel ative reactivity... [Pg.708]

Increasing stabilization of carbonyl group decreasing K for hydration... [Pg.714]

Preferred direction of approach of borohydnde is to less hindered face of carbonyl group... [Pg.734]

Enzyme catalyzed reductions of carbonyl groups are more often than not com pletely stereoselective Pyruvic acid for example is converted exclusively to (5) (+) lactic acid by the lactate dehydrogenase NADH system (Section 15 11) The enantiomer... [Pg.735]

An extreme example of carbonyl group stabilization is seen m carboxylate anions... [Pg.836]

Most methods for their preparation convert one class of carboxylic acid derivative to another and the order of carbonyl group stabilization given m Figure 20 1 bears directly on the means by which these transformations may be achieved A reaction that converts one carboxylic acid derivative to another that lies below it m the figure is pracfical a reacfion fhaf converts if fo one fhaf lies above if is nol This is anofher way of saying fhaf one carboxylic acid derivative can be converted to another if the reaction leads to a more stabilized carbonyl group Numerous examples of reacfions of fhis fype will be pre senfed m fhe secfions fhaf follow... [Pg.836]

Table 7.55 Carbon-13 Chemical Shifts of Carbonyl Group 7.106... Table 7.55 Carbon-13 Chemical Shifts of Carbonyl Group 7.106...
MEK is a colorless, stable, flammable Hquid possessing the characteristic acetone-type odor of low molecular weight aUphatic ketones. MEK undergoes typical reactions of carbonyl groups with activated hydrogen atoms on adjacent carbon atoms, and condenses with a variety of reagents. Condensation of MEK with formaldehyde produces methylisopropenyl ketone (3-methyl-3-buten-2-one) ... [Pg.488]

In most cases the frequencies of substituent groups attached to these heterocycles differ little from those observed for their benzenoid counterparts. The only notable exception is the spectral behaviour of carbonyl groups attached to position 2. These have attracted much attention as they frequently give rise to doublets, and occasionally multiplets. In the case of (34), (35) (76JCS(P2)l) and (36) (76JCS(P2)597) the doublets arise from the presence of two conformers (cf. Section 3.01.5.2), whereas for the aldehydes (37) the doublets are... [Pg.19]

Oxidation of polyethylene with the formation of carbonyl groups can lead to a serious increase in power factor. Antioxidants are incorporated into compounds for electrical applications in order to reduce the effect. [Pg.226]

B. Factors Governing Selectivity in Formation of Protecting Groups 1. Protection of carbonyl groups... [Pg.375]

The well-known reduction of carbonyl groups to alcohols has been refined in recent studies to render the reaction more regioselective and more stereoselective Per-fluorodiketones are reduced by lithium aluminum hydride to the corresponding diols, but the use of potassium or sodium borohydride allows isolation of the ketoalcohol Similarly, a perfluoroketo acid fluonde yields diol with lithium aluminum hydnde, but the related hydroxy acid is obtainable with potassium borohydnde [i f] (equations 46 and 47)... [Pg.308]


See other pages where Of carbonyl group is mentioned: [Pg.171]    [Pg.19]    [Pg.165]    [Pg.529]    [Pg.625]    [Pg.723]    [Pg.833]    [Pg.141]    [Pg.438]    [Pg.473]    [Pg.234]    [Pg.255]    [Pg.116]    [Pg.134]    [Pg.147]    [Pg.163]    [Pg.382]    [Pg.385]    [Pg.388]   
See also in sourсe #XX -- [ Pg.36 ]

See also in sourсe #XX -- [ Pg.19 , Pg.226 , Pg.229 ]

See also in sourсe #XX -- [ Pg.19 , Pg.226 , Pg.229 ]




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1,2-transposition of a carbonyl group

Acid catalysts increase the reactivity of a carbonyl group

Activation of Carbonyl Groups and Alcohols

Activation of carbonyl groups by iminium ion formation

Activation of the carbonyl group

Addition of Carbon Nucleophiles to Carbonyl Groups

Addition of Organometallic Reagents to Carbonyl Groups

Addition of diazomethane to carbonyl groups

Addition of organomagnesium compounds to carbonyl groups

Alkylation of carbonyl groups

Allylation of Carbonyl Groups Akira Yanagisawa

Allylation of carbonyl groups

Amides reactivity of carbonyl group

By Alan Cox 2 Reduction of the Carbonyl Group

Carbon of carbonyl groups

Carbon-13 chemical shifts of carbonyl group

Carbonyl Halides of Group 10 Metals

Carbonyl group addition of enolate anion

Carbonyl group facilitation of addition or eliminatio

Carbonyl groups of acetyl-CoA

Carbonyl groups of monosaccharides

Carbonyl groups of sugars

Catalysts Prepared from Metal Carbonyls of Group 8 Iron, Ruthenium and Osmium

Chemoselective Functionalization of Different Carbonyl Group

Conversion of Carbonyl Groups into Acetals and Analogous Reactions

Cyanation of Carbonyl and Imino Groups Atsunori Mori, Shohei Inoue

Deoxygenation of the Carbonyl Group

Determination of Carbonyl Groups

Determination of Carbonyl Groups in Lignin

Discrimination of Enantiotopic or Diastereotopic Carbonyl Groups

Electronic states of carbonyl group

Esters reactivity of carbonyl group

Formation of carbonyl groups in polymers

Generation and Reaction of Aryllithium Species Bearing Ketone Carbonyl Groups

Halogenation of a- to Carbonyl Groups

Hydride Reduction of a Carbonyl Group

Hydroboration of Carbonyl Groups Shinichi Itsuno

Hydrogenation of Carbonyl and Other Functional Groups

Hydrogenation of carbonyl group

Hydrogenation of the Carbonyl Group

Hydrolysis regeneration of carbonyl groups

Hydrosilylation of Carbonyl Groups

Hydrosilylation of Carbonyl and Imino Groups Hisao Nishiyama

Influence of Carbonyl Groups

Infra-red spectrum of carbonyl groups ofenones

Infra-red spectrum of carbonyl groups regions

Isolated Double Bonds in the Presence of a Carbonyl Group

LUMO of the carbonyl group

Methylenation of carbonyl groups

Migratory Deinsertion of a Carbonyl Group

Nature of the carbonyl groups

Nucleophilic reactions of carbonyl groups

Of 1,3-dithiolanes, to form carbonyl groups

Of methylene groups to carbonyls

Ozonolysis regeneration of carbonyl groups

Photochemical Reaction of Carbonyl Groups

Photochemical reactions of the carbonyl group

Photochemistry of Carbonyl Groups

Photocycloadditions of the Carbonyl Group

Photolysis of carbonyl groups

Photoreactions of carbonyl groups

Polarization, of carbonyl group

Pre-Reduction of Carbonyl Groups with Lithium Aluminum Hydride

Protection of Carbonyl Groups in Aldehydes and Ketones

Protection of carbonyl groups

Protonation of carbonyl group

Reaction of Carbon Nucleophiles with Carbonyl Groups

Reaction of carbonyl groups with 2,4-dinitrophenylhydrazine

Reactions of the Carbonyl Group

Reactivity of carbonyl group

Reactivity of the Carbonyl Group

Reduction of Carbonyl and Other Functional Groups

Reduction of Main Group Oxides via Metal Carbonyls and Carbonylate Anions

Reduction of activated carbonyl groups

Reduction of carbonyl groups

Reduction of the carbonyl group

Reductive Deoxygenation of Carbonyl Groups

Reductive Deoxygenation of Carbonyl Groups to Methylene

Reversal of the Carbonyl Group Polarity (Umpolung)

Selective reduction of carbonyl group in

Some Acid-Base-catalyzed Reactions of the Carbonyl Group

Stability of carbonyl group

Stereochemistry of nucleophilic addition at carbonyl groups

Stereoselective reductions, of carbonyl groups

Structure of the Carbonyl Group

Substitution Products of the Group VIB Metal Carbonyls

Substitutions at the Carbonyl Group Reactions of Carboxylic Acids and Derivatives

Survey of the Cationic Metal Carbonyls and Their Properties by Groups

The Role of Proximal, Lewis Basic Functional Groups in Carbonyl Reduction

Thermodynamic Stability of Substituted Carbonyl Groups

Transposition of the Carbonyl Group

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