Petroleum Acids. V. Aliphatic Acids from California Petroleum

Quebedeaux, Walter A.; Wash, George; Ney, W. O.; Crouch, W. W.; Lochte, H. L.

doi:10.1021/ja01245a011

Cited by 13 publications

(4 citation statements)

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“…The aliphatic acids through Ca were carefully separated and the normal acids, which occurred in much the highest concentration, through Ca were identified. There was no indication that such acids do not occur above Cj (31). In the naphthenic acid range cyclopentanecarboxylic, 2-methylcyclopentanecarboxylic, 3-methyIcyclopentanecarboxylic, cyclopentylacetic, 3-methylcyclopentylacetic, 2,3-dimethylcyclopentylacetic, and 1,2,2-trimethylcyclopentanecarboxylic acids containing what is considered the typical cyclopentane ring were isolated as were cyclohexanecarboxylic, p-methylcyclohexanécarboxylic, and cis-and ¿r<ms-2,2,6-trimethylcyclohexanecarboxylic acids {25).…”

Section: Petroleum Acidsmentioning

confidence: 98%

Petroleum Acids and Bases

Lochte¹

1952

Ind. Eng. Chem.

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Section: Petroleum Acidsmentioning

confidence: 98%

Petroleum Acids and Bases

Lochte¹

1952

Ind. Eng. Chem.

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“…The fate of these acids is most important; their study merits intense consideration. Branched-chain fatty acids have been found in petroleum (4)(5)(6) in modern sediments (54), and in Green River oil shale (54,55). Recent discoveries of branched-chain fatty acids in petroleum by Cason and Grahanl (6) and in marine lipids as summarized by Ackman and Sipos (7) should stimulate active interest in searching for the presence of these compounds in other modern and ancient sediments.…”

Section: Introductionmentioning

confidence: 99%

Normal fatty acids in sediments

Kvenvolden

1967

J Americ Oil Chem Soc

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Normal fatty acids have been found by several investigators in a number of sediments ranging in age from Precambrian to Recent. This paper summarizes these occurrences. A variety of molec‐ular distributions have been observed. In most sediments, even‐carbon‐numbered normal fatty acids are much more abundant than those with odd carbon numbers; in some sediments, however, concentrations of even‐ and odd‐carbon‐numbered normal fatty acids are about equal. Normal fatty acids have been postulated as pos‐sible precursors for normal paraffin hydrocarbons in petroleum because of 1) structural similarities between the two kinds of molecules, 2) ubiquity of fatty acids in biological materials, 3) fatty acid‐normal paraffin relationships in sediments, and 4) distribution of normal paraffins in some crude oils. Evidence suggests that normal fatty acids may be precursors for many normal paraffins of intermediate and high molecular weights found in petroleum. Detailed mechanisms of chemical reactions by which normal paraffins can be de‐rived from fatty acids in sediments under geo‐logically reasonable conditions have yet to be defined.

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“…Found: C, 56.03; H, 9.84. A 10-g. portion of the (0.088 mole) aldehyde fraction was oxidized with 45 g, (0.26 mole) of silver nitrate and 14.5 g. (0.36 mole) of sodium hydroxide according to the procedure described for 3,4-dimethylvaleraldehyde (12) to produce 6.0 g. (45%) of acid, b.p. 72°( 5 mm.…”

Section: Dicobalt Octacarbonyl C5h11chomentioning

confidence: 99%

“…-Methylcaproic acid was reported (12) to have the following constants: b.p. 215-216°, " 1.4227, amide, m.p.…”

Section: Dicobalt Octacarbonyl C5h11chomentioning

confidence: 99%