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Trans-Butenedioic acid

Chemical Designations - Synonyms Allomaleic acid Boletic acid trans-Butenedioic acid trans-1,2-Ethylenedicarboxylic acid Lichenic acid Chemical Formula H02CCH=CHC02H. [Pg.185]

Allomaleic acid 2-butenedioic acid trans-butenedioic acid boletic acid lichenic acid trans-l,2-ethenedicarboxylic acid... [Pg.66]

This appears to be a rather mixed collection of compounds. We recognize three isox-azolines in the collection. However, the data for the last two species, the cis and trans isomers of 3-phenyl-2-isoxazolinedicarboxylic acid dimethyl ester from Reference 67, are suspect because the difference of 125 kJmol is implausible—the corresponding difference for the cis and trans butenedioic acid dimethyl esters from Reference 68 is but ca 30kJmol-. ... [Pg.75]

Cis-Butenedioic Acid Trans-Butenedioic Acid Cis-Butenedioic Anhydride... [Pg.28]

Figure 10-9 Representation of the course of enzyme-induced hydration of fumaric acid (trans-butenedioic acid) to give L-malic acid (L-2-hydroxy-butanedioic acid). If the enzyme complexes with either—C02H (carboxyl) group of fumaric acid, and then adds OH from its right hand and H from its left, the proper stereoisomer (l) is produced by antarafacial addition to the double bond. At least three particular points of contact must occur between enzyme and substrate to provide the observed stereospecificity of the addition. Thus, if the enzyme functions equally well with the alkenic hydrogen or the carboxyl toward its mouth (as shown in the drawing) the reaction still will give antarafacial addition, but o,L-malic acid will be the product. Figure 10-9 Representation of the course of enzyme-induced hydration of fumaric acid (trans-butenedioic acid) to give L-malic acid (L-2-hydroxy-butanedioic acid). If the enzyme complexes with either—C02H (carboxyl) group of fumaric acid, and then adds OH from its right hand and H from its left, the proper stereoisomer (l) is produced by antarafacial addition to the double bond. At least three particular points of contact must occur between enzyme and substrate to provide the observed stereospecificity of the addition. Thus, if the enzyme functions equally well with the alkenic hydrogen or the carboxyl toward its mouth (as shown in the drawing) the reaction still will give antarafacial addition, but o,L-malic acid will be the product.
SYNS ALLOMALEIC ACID BOLETIC ACID trans-BUTENEDIOIC ACID (E)-BUTENEDIOIC ACID trans-l,2-ETHYLENEDICARBOXYLICACID (E)l,2-ETH il.ENEDICARBOXI LIC ACID KYSELINA EUM. ROVA (CZECH) LICHENIC ACID NSC-2752 U-1149 USAF EK-P-583... [Pg.682]

Catalytic hydrogenation of fluoro- and difluOTO-m- and tran -butenedioic acids and their esters frequently affords products only of hydrogenolysis, especially when platinum oxide (Adams catalyst) is used. Hydrogenolysis is favored in polar solvents, and is found to be more effective when rhodium or nickel rather than palladium are used as the catalysts (Table 2). Hydrogenolysis takes place prior to the saturation of the double bonds fluoro- and 2,3-difluoro-succinic acids do not suffer any loss of fluorine under the same reaction conditions. ... [Pg.896]

Allomaleic acid allomalenic acid boletic acid butenedioic acid E297 1,2-ethenedicarboxylic acid lichenic acid trans-butenedioic acid NSC-2752 traMs-l,2-ethylenedicarboxylic acid U-1149 USAF EK-P-583. [Pg.293]

Here, a seven-membered ring is formed by the interaction between the deprotonated carboxylate group and the polarised hydrogen of the second carboxylic acid group. Suggest the form of hydrogen bonding that may exist in the mono-deprotonated anion of trans-butenedioic acid. [Pg.99]

Fumaric acid (trans--butenedioic acid) HOOCCH=CHCOOH... [Pg.47]

BUTENEDIOIC ACID or 2-BUTENEDIOIC ACID, (E)- or (E)-BUTENEDIOIC ACID or trans-BUTENEDIOIC ACID (110-17-8) C4H4O4 Combustible solid. Dust or finely divided material forms explosive mixture with air... [Pg.168]

Stereospecificity may also apply to enzymes acting on the substrates containing double bonds, which give rise to geometric isomers, cis and trans or E and Z. For example, fumerase specifically catalyzes trans hydration of fumerate (trans-butenedioic acid) ... [Pg.329]

Butenedioic acid. See Fumaric acid cis-Butenedioic acid. See Maleic acid (E)-Butenedioic acid trans-Butenedioic acid. See Fumaric acid (Z)-Butenedioic acid. See Maleic acid 2-Butenedioic acid bis (2-ethylhexyO ester. See Dioctyl fumarate 2-Butenedioic acid (Z)-, bis (2-ethylhexyO ester. See Bis (2-elhylhexyl) maleate... [Pg.1004]

Synonyms Allomaleic acid dimethyl ester Boletic acid dimethyl ester 2-Butenedioic acid, diethyl ester, (E)- trans-Butenedioic acid dimethyl ester trans-1,2-Ethylenedicarboxylic acid dimethyl ester... [Pg.1425]

CAS 110-17-8 EINECS/ELINCS 203-743-0 UN 9126 (DOT) FEMA2488 INS297 Synonyms Allomaleic acid Boletic acid 2-Butenedioic acid (E)-Butenedioic acid trans-Butenedioic acid... [Pg.1851]

Monosodium ascorbate Monosodium L-ascorbate. See Sodium ascorbate Monosodium trans-butenedioic acid. See Sodium fumarate... [Pg.2737]

Synonyms Fumaric acid monosodium salt Monosodium trans-butenedioic acid Monosodium trans-1,2-ethylenedicarboxylate Monosodium trans-1,2-ethylenedicarboxylic acid Monosodium fumarate Sodium fumarate acidic Sodium hydrogen fumarate... [Pg.4027]

Glovsky et al. observed an anticomplementary activity for levopimaric acid (45), a derivative of abietic acid, and prepared a number of synthetic derivatives such as maleopimaric acid (46) and fumaropimaric acid (47), being Diels-Alder substitution products of levopimaric acid v ith maleic anhydride or fumaric acid, respectively [28, 29]. Maleic acid is cis-butenedioic acid, fumaric acid is trans-butenedioic acid. Maleopimaric acid inhibited complement-mediated haemolysis via classical path-way activation (45% inhibition at a concentration of 500 iM), Fumaropimaic acid inhibited in vivo complement-dependent systemic Frossman, cutaneous Frossman, and reverse passive Arthus reactions. These pimaric acid derivatives have already been included in earlier reviews on complement-active compounds [8, 30]. The... [Pg.150]

E)-2-Butenedioic acid trans-butenedioic acid allomaleic acid. [Pg.348]

The cis isomer of hutene 23-dioic acid is a much stronger acid than the trans isomer. The first pKg of ds-butene-2,3 dioic acid is 1.92 whereas the first pfQ of trans-butenedioic acid is 3.02 (Chapter 18). This is because the -COO group formed in the cis isomer can be stabilized by hydrogen bonding from the ac acent -COOH group, which is on the same side of the double bond. This stabilization is not possible in the trans isomer because the two groups are too far apart. [Pg.703]

Biochemists know these two forms of butenedioic acid by different (non-systematic) names. Fumaric acid (trans-butenedioic acid) is an intermediate in the Krebs cycle, an essential part of aerobic respiration for energy release in cells (Chapter 15, and Chapter 23 on the accompanying website). Maleic acid (cis-butenedioic acid) is an inhibitor of reactions involved in the interconversion of amino acids in the liver. These different biological roles are a consequence of the molecules different shapes and their interactions with the enzymes involved in metabolic pathways. [Pg.703]

See other pages where Trans-Butenedioic acid is mentioned: [Pg.266]    [Pg.64]    [Pg.64]    [Pg.38]    [Pg.38]    [Pg.371]    [Pg.47]    [Pg.390]    [Pg.390]    [Pg.299]    [Pg.469]    [Pg.588]    [Pg.115]    [Pg.336]    [Pg.17]   
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See also in sourсe #XX -- [ Pg.99 ]

See also in sourсe #XX -- [ Pg.185 ]

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See also in sourсe #XX -- [ Pg.469 ]

See also in sourсe #XX -- [ Pg.209 , Pg.399 ]

See also in sourсe #XX -- [ Pg.337 ]



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2-Butenedioic acid

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