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Acroleine

When the fats are heated above 250"C they decompose with the production of acrolein, the intense smell of which is one of the best methods for detecting fats. The extraction of fats from tissues is most conveniently carried out by extraction with ether or some other solvent. [Pg.172]

HC CH(0H) CH20H. optically active. D-glyceraldehyde is a colourless syrup. May be prepared by mild oxidation of glycerol or by hydrolysis of glyceraldehyde acetal (prepared by oxidation of acrolein acetol). DL-glyceraldehyde forms colourless dimers, m.p. IBS-S C. Converted to methylglyoxal by warm dilute sulphuric acid. The enantiomers... [Pg.192]

When exposed to sunlight, it is converted to a white insoluble resin, disacryl. Oxidized by air to propenoic acid small amounts of hy-droquinone will inhibit this. Bromine forms a dibromide which is converted by barium hydroxide into DL-fructose. The acrid odour of burning fats is due to traces of propenal. It is used in the production of methionine and in controlled polymerization reactions to give acrolein polymers. ... [Pg.329]

When a mixture of aniline, nitrobenzene, glycerol and concentrated sulphuric acid is heated, a vigorous reaction occurs with the formation of quinoline. It is probable that the sulphuric acid first dehydrates the glycerol giving acrolein or acraldehyde (A), which then condenses at its double bond with the amino group of the aniline to give acrolein-aniline (B), The latter in its enol... [Pg.297]

I. Acrolein test. Heat 0-5 ml. with about i g. of finely powdered KHSO4. Acrolein, CH2 CH CHO, produced by dehydration of the glycerol, is readily detected by its characteristic and irritating odour smell cautiously). [Pg.337]

If the original ester is a fat or oil and produces an odour of acrolein when heated, it may be a glyceride. Esters of ethylene glycol and of glycol with simple fatty acids are viscous and of high b.p. They are hydrolysed (method I) and the ethyl alcohol distilled ofl. The residue is diluted (a soap may be formed) and acidified with hydrochloric acid (Congo red paper). The acid is filtered or... [Pg.391]

Benzaldehyde is easily oxidised by atmospheric oxygon giving, ultimately, benzoic acid. This auto-oxidation is considerably influenced by catalysts tiiose are considered to react with the unstable peroxide complexes which are the initial products of the oxidation. Catalysts which inhibit or retard auto-oxidation are termed anti-oxidants, and those that accelerate auto-oxidation are called pro-oxidants. Anti-oxidants find important applications in preserving many organic compounds, e.g., acrolein. For benzaldehyde, hydroquinone or catechol (considerably loss than U-1 per cent, is sufficient) are excellent anti-oxidants. [Pg.694]

Figure 1.3. Frontier orbital energies (eV) and confidents for acrolein and protonated acrolein. In the latter case the upper numbers refer to the situation where bond lengths and angles correspond to those of acrolein. The lower numbers are more suitable for a hydroxyallyl cation. The actual situation is assumed to be intermediate. The data are taken from ref. 104. Figure 1.3. Frontier orbital energies (eV) and confidents for acrolein and protonated acrolein. In the latter case the upper numbers refer to the situation where bond lengths and angles correspond to those of acrolein. The lower numbers are more suitable for a hydroxyallyl cation. The actual situation is assumed to be intermediate. The data are taken from ref. 104.
To a mixture of 250 ml of ether and 3 moles of freshly distilled acrolein ivere added about 3 moles of bromine at a rate such that the temperature could easily be maintained between -30 and -90°C (bath of dry-ice-acetone or liquid Nj). After persisting of the browncolour, the temperature was allowed to rise to 0°C. Freshly distilled ethyl orthoformate (3.25 moles) and 96% ethanol (30 ml) were added. [Pg.149]

Reaction of triethylsilane with a, /3-unsaturated aldehydes catalyzed by Pd on carbon gives a /raff5-l,4-adduct as the main product. Reaction of acrolein gave the adduct in 86% yield, in which the 1,4-adduct 48 was 97% and the 1,2-adduct was 3%[44]. [Pg.517]

Addition of nucleophiles to both activated and unactivated alkenes is catalyzed by Pd(II). Addition of alcohols or AcOH to alkenes bearing EWGs is catalyzed by PdCl2(PhCN)2 to give the corresponding ethers and esters. The addition of an alcohol to the cyclic acetal of acrolein 82 to give the ether 83 is also possible with the same catalyst[64]. Amines add to the vinylic ether 84 to give 85, but not to simple alkenes[65]. [Pg.523]

Donor substituents on the vinyl group further enhance reactivity towards electrophilic dienophiles. Equations 8.6 and 8.7 illustrate the use of such functionalized vinylpyrroles in indole synthesis[2,3]. In both of these examples, the use of acetyleneic dienophiles leads to fully aromatic products. Evidently this must occur as the result of oxidation by atmospheric oxygen. With vinylpyrrole 8.6A, adducts were also isolated from dienophiles such as methyl acrylate, dimethyl maleate, dimethyl fumarate, acrolein, acrylonitrile, maleic anhydride, W-methylmaleimide and naphthoquinone. These tetrahydroindole adducts could be aromatized with DDQ, although the overall yields were modest[3]. [Pg.84]

FIGURE 18 6 Acrolein w (H2C=CHCH=0) is a planar molecule Oxygen and each carbon IS sp hybridized and each contributes one elec tron to a conjugated tt elec tron system analogous to that of 1 3 butadiene... [Pg.776]

Acrolein (H2C=CHCH=0) reacts with sodium azide (NaNj) in aqueous acetic acid to form a compound C3H5N3O in 71% yield Propanal (CH3CH2CH=0) when subjected to the same reaction conditions is recovered unchanged Suggest a structure for the product formed from acrolein and offer an explanation for the difference in reactivity between acrolein and propanal... [Pg.779]

The simplest a 3 unsaturated aldehyde acrolein is prepared by heating glycerol with an acid catalyst Suggest a mechanism for this reaction... [Pg.784]

Acrolein (H2C=CHCH=0) undergoes conjugate addition with sodium azide in aqueous solution to give N3CH2CH2CH=0 Propanal is not an a 3 unsaturated carbonyl compound and cannot undergo conjugate addition... [Pg.1234]

Acrylaldehyde (not acrolein) Benzaldehyde Cinnamaldehyde 2-Furaldehyde (not furfural)... [Pg.26]

Ammonia, anhydrous Mercury, halogens, hypochlorites, chlorites, chlorine(I) oxide, hydrofluoric acid (anhydrous), hydrogen peroxide, chromium(VI) oxide, nitrogen dioxide, chromyl(VI) chloride, sulflnyl chloride, magnesium perchlorate, peroxodisul-fates, phosphorus pentoxide, acetaldehyde, ethylene oxide, acrolein, gold(III) chloride... [Pg.1207]

Chlorosulfonic acid Saturated and unsaturated acids, acid anhydrides, nitriles, acrolein, alcohols, ammonia, esters, HCl, HF, ketones, hydrogen peroxide, metal powders, nitric acid, organic materials, water... [Pg.1207]

Potassium hydride Air, chlorine, acetic acid, acrolein, acrylonitrile, maleic anhydride, nitroparaf-flns, A-nitrosomethylurea, tetrahydrofuran, water... [Pg.1211]

Figure 5.1 Principal inertial axes of (a) hydrogen cyanide, (b) methyl iodide, (c) benzene, (d) methane, (e) sulphur hexafluoride, (f) formaldehyde, (g) s-lraws-acrolein and (h) pyrazine... Figure 5.1 Principal inertial axes of (a) hydrogen cyanide, (b) methyl iodide, (c) benzene, (d) methane, (e) sulphur hexafluoride, (f) formaldehyde, (g) s-lraws-acrolein and (h) pyrazine...

See other pages where Acroleine is mentioned: [Pg.13]    [Pg.13]    [Pg.144]    [Pg.160]    [Pg.191]    [Pg.192]    [Pg.319]    [Pg.329]    [Pg.135]    [Pg.329]    [Pg.334]    [Pg.446]    [Pg.459]    [Pg.828]    [Pg.79]    [Pg.409]    [Pg.745]    [Pg.909]    [Pg.135]    [Pg.420]    [Pg.498]    [Pg.818]    [Pg.975]    [Pg.1198]    [Pg.1213]    [Pg.105]   
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See also in sourсe #XX -- [ Pg.341 ]

See also in sourсe #XX -- [ Pg.532 ]

See also in sourсe #XX -- [ Pg.186 ]




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1,3-propanediol from acrolein

3- acrolein, condensation with

3- acroleins, hydrolysis

3- acroleins, hydrolysis salts

A- acrolein

A-Substituted acroleins

ACROLEIN COPOLYMER

ACROLEIN.141(Vol

Acetate Acrolein

Acetonitrile Acrolein

Acetyl chloride Acrolein

Acetyl chloride Acrolein acetal

Acrolein

Acrolein

Acrolein 1,3-dipolar cycloaddition

Acrolein 2 + 2] cycloaddition reactions

Acrolein 2-ethyl

Acrolein Lewis acid catalysis

Acrolein Methionine

Acrolein Michael reactions

Acrolein acetal

Acrolein acetal formation

Acrolein acetals Diels-Alder reactions

Acrolein addition reaction

Acrolein adduct

Acrolein and Acrylic Acid

Acrolein and acrylonitrile

Acrolein and butadiene

Acrolein and derivatives

Acrolein aquatic organisms

Acrolein atmosphere

Acrolein cancer

Acrolein carcinogenicity

Acrolein catalytic selectivity

Acrolein chemical properties

Acrolein chloro

Acrolein combustion

Acrolein complexes

Acrolein complexes with copper

Acrolein concentrations

Acrolein conformation

Acrolein conjugate additions

Acrolein coordination

Acrolein criteria

Acrolein cyanohydrin

Acrolein cyclic acetal

Acrolein derivatives

Acrolein dibromide

Acrolein dichloride

Acrolein diethylacetal

Acrolein dimer

Acrolein dimerisation

Acrolein dimerization

Acrolein dimethylacetal

Acrolein effects

Acrolein electron delocalization

Acrolein ene reactions

Acrolein ethylene aldehyde

Acrolein flammability limits

Acrolein flash point

Acrolein formation

Acrolein from propylene

Acrolein frontier orbitals

Acrolein health effects

Acrolein heterogeneous oxidation

Acrolein human health protection

Acrolein hydration

Acrolein hydroformylation

Acrolein hydrogenation

Acrolein intermolecular

Acrolein lithium cation complexes

Acrolein mammals

Acrolein metabolism

Acrolein molecular orbitals

Acrolein mutagenicity

Acrolein nucleophilic addition reactions

Acrolein odor threshold

Acrolein oxidation

Acrolein persistence

Acrolein photochemistry

Acrolein photolysis

Acrolein physical properties

Acrolein plastic

Acrolein polymerization

Acrolein preparation

Acrolein production

Acrolein protonated

Acrolein radical attack

Acrolein reaction with enamines

Acrolein reactions

Acrolein reactivity

Acrolein recommendations

Acrolein regioselectivity

Acrolein resonance

Acrolein respiratory toxicity

Acrolein selectivity

Acrolein sources

Acrolein synthesis

Acrolein terrestrial plants

Acrolein test

Acrolein toxicity

Acrolein with trialkylboranes

Acrolein — Propen

Acrolein, (3-chlorosynthesis Vilsmeier-Haack reaction

Acrolein, Diels-Alder reaction

Acrolein, Diels-Alder with

Acrolein, H2C=CHCHO

Acrolein, Lewis acid complexes

Acrolein, Michael addition

Acrolein, a-fluorosynthesis

Acrolein, a-fluorosynthesis via cyclopropane ring opening

Acrolein, addition

Acrolein, diethyl acetal

Acrolein, dimethyl acetal

Acrolein, dipole moment

Acrolein, from heterogeneous oxidation

Acrolein, manufacture

Acrolein, production from glycerol

Acrolein, protein reactivity

Acrolein, reaction with

Acrolein, reaction with borane

Acrolein, reaction with boranes

Acrolein, reaction with butadiene

Acrolein, structure

Acrolein, trimerization

Acrolein/acrylonitrile

Acrolein/acrylonitrile Sohio process

Acrolein/acrylonitrile bismuth phosphomolybdate

Acrolein/acrylonitrile propylene oxidation

Acrolein/acrylonitrile reaction mechanism

Acrolein/acrylonitrile structure

Acrolein: 2-Propenal

Acroleins 2-substituted

Acroleins monodentate

Acroleins, 2-alkyl-3-

Acrylates and acrolein (propenal)

Acrylic Aldehyde or Acrolein

Acrylic acid from acrolein

Aldehydes acrolein

Alkylating agent acrolein

Allyl aldehyde = acrolein

Allylmagnesium bromide reaction with acrolein

Anaerobic Oxidation of Propene to Acrolein in a CFBR Reactor

Beneficial Micro Reactor Properties for the Oxidation of Propene to Acrolein

Bis acroleins

Butadiene + Acrolein Paradigm

Chloride Acrolein

Cross with acrolein

Cyano-acroleine

Cycloaddition of acrolein

Cycloaddition reaction with acrolein

Cyclopentadiene acrolein

Deficiency effects acrolein

Diels cyclopentadiene with acrolein

Diels-Alder reaction, of acrolein with

Diels-Alder reaction, of acrolein with ether

Diels-Alder reaction, of acrolein with methyl vinyl ketone

Diels-Alder reaction, of acrolein with vinyl ether, and ethyl isopropenyl

Dienes with acrolein

Dimethyl acrolein

Dipolar Acrolein

Ethyl propyl acrolein

Glycerol acrolein

Glycerol conversion into acrolein

Grignard reaction, addition of allylmagnesium bromide to acrolein

Hiickel calculations acrolein

Hydrogenation of acrolein

Hydrolysis acrolein synthesis

Lipid peroxidation acrolein

MAGNACIDE H®, acrolein

Magnesium, bromodecylnucleophilic addition reactions acrolein dimer

Manufacture of Mixed Oxide Catalysts for Acrolein and Acrylonitrile

Masked equivalent acrolein

Molybdenum complexes acrolein

Morita-Baylis-Hillman reactions acrolein

Of acrolein

Of protonated acrolein

Olefination acrolein

Olefins, activated acrolein

Organocatalysts acrolein

Oxidation of Propene to Acrolein

Oxidation of acrolein and methacrolein

Oxidation propene to acrolein

Oxygen acroleine

P-methyl acrolein

Palladium acrolein

Papite (acrolein

Papite. French for CWA Acrolein

Photochemical behaviour of acrolein

Poly acrolein

Preparation from acrolein

Problems acrolein production

Propene to acrolein

Propylene acrolein

Propylene oxidation to acrolein

Propylene oxidation to acrolein example

Propylene to acrolein

Pyridine from acrolein

Radical chain polymerization acrolein

Reactions of Enamines with Acrolein

Shell process acrolein

Starch with acrolein

TABLE OF CONTENTS PAGE Acrolein Acetal

Teratogenicity acrolein

The Reaction of Trialkylboranes with Methyl Vinyl Ketone and Acrolein

Transetherification of acrolein and ethyl

Transetherification of acrolein and ethyl orthoformate

Wines acrolein

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