Ultraviolet Spectrophotometric Determination of Tertiary Alcohols by Conversion to Alkyl Iodides.

Scoggins, M. W.; Miller, Jeffrey W.

doi:10.1021/ac60236a022

Cited by 8 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first iodide to elute (at 47.7 min) has an absorption maximum at 267 nm and also absorbs strongly at 210 nm, as is characteristic of tertiary iodides. 14 It is readily identified as 2-iodo-2,3-dimethylbutane produced as a result of scavenging of the radicals resulting from the loss of a tertiary H atom. The second peak (at 49.2 min) has an absorption maximum at 256 nm and is assigned as the primary iodide, 1-iodo-2,3-dimethylbutane.…”

Section: Results and Data Analysismentioning

confidence: 99%

See 1 more Smart Citation

Radical Yields in the Radiolysis of Branched Hydrocarbons: Tertiary C−H Bond Rupture in 2,3-Dimethylbutane, 2,4-Dimethylpentane, and 3-Ethylpentane

Schüler

Wojnárovits

2003

J. Phys. Chem. A

View full text Add to dashboard Cite

Gel permeation chromatography has been applied to iodine scavenging studies of the distribution of radicals produced in the radiolysis of symmetrically branched hydrocarbons 2,3-dimethylbutane, 2,4-dimethylpentane, and 3-ethylpentane. The principal iodides observed are those expected as a result of simple bond rupture. In the case of 2,3-dimethylbutane all five expected iodides are readily resolvable and it is shown that the loss of H from a tertiary position is favored over loss from a primary position by a factor of ∼10. A similar ratio is also observed for 2,4-dimethylpentane. The higher ratio of 15 observed for 3-ethylpentane indicates a dependence on the number of tertiary sites on the alkane. The relative yield of ∼3.3 for the loss of secondary and primary H atoms from 2,4-dimethylpentane and 3-ethylpentane is similar to that for normal alkanes, indicating a negligible effect of the adjacent tertiary carbon. In all three cases the rupture of terminal C-C bonds is relatively infrequent with C-C rupture occurring preferentially at the bonds adjacent to the tertiary carbon.

show abstract

Section: Results and Data Analysismentioning

confidence: 99%

“…Most chromatograms were displayed at 260 nm where all saturated alkyl iodides exhibit significant absorption. ,− These chromatograms provided quantitative data for the determination of the iodide yields. The areas under the chromatographic peaks were determined with Waters Millennium or Origin 6.1 software as described previously .…”

Section: Methodsmentioning

confidence: 99%

Radical Yields in the Radiolysis of Branched Hydrocarbons: Tertiary C−H Bond Rupture in 2,3-Dimethylbutane, 2,4-Dimethylpentane, and 3-Ethylpentane

Schüler

Wojnárovits

2003

J. Phys. Chem. A

View full text Add to dashboard Cite

show abstract

“…Holcomb and coworkers (289) determined p-hvdroxyphenylpyruvic acid in urine as p-hydroxybenzaldehyde. Scoggins and Miller (546) determined tertiary alcohols as the corresponding tertiary alkyl iodides. Wallace (638) determined diphenydramine and related compounds by measurement as benzophenone after acid hydrolysis, oxidation and steam distillation.…”

Section: Organic Analysismentioning

confidence: 99%

Ultraviolet spectrometry

Crummett¹,

Hummel²

1968

Anal. Chem.

View full text Add to dashboard Cite

“…Tertiary alcohols were determined, by conversion to alkyl iodides and measurement of the ultraviolet absorbance of the product, in a method developed by Scoggins and Miller (565).…”

Section: Vazquez Andmentioning

confidence: 99%

Essential oils and related products

Guenther¹,

Gilbertson²,

Koenig³

1967

Anal. Chem.

View full text Add to dashboard Cite

This11th review of analytical procedures for essential oils and related products covers Paper chromatography was used by Richter and Muscholl (515) to isolate linalool, geraniol, citronellol, and linalyl acetate from oils of lavender, lavandin, geranium, citronella, and melissa. The quantities of the isolates were estimated by colorimetry.Infrared spectroscopy was used by Vega Morales (687) to detect adulterants in the oils of lavender, peppermint, lemon, and orange.The application of ultraviolet spectroscopy was critically studied by Vernin (693). He stressed its importance in the elucidation of molecular structure. The technique was utilized by Koul and Nigam (322) for the quantitative determination of a number of components in various oils.

show abstract

Ultraviolet Spectrophotometric Determination of Tertiary Alcohols by Conversion to Alkyl Iodides.

Cited by 8 publications

References 10 publications

Radical Yields in the Radiolysis of Branched Hydrocarbons: Tertiary C−H Bond Rupture in 2,3-Dimethylbutane, 2,4-Dimethylpentane, and 3-Ethylpentane

Radical Yields in the Radiolysis of Branched Hydrocarbons: Tertiary C−H Bond Rupture in 2,3-Dimethylbutane, 2,4-Dimethylpentane, and 3-Ethylpentane

Ultraviolet spectrometry

Essential oils and related products

Contact Info

Product

Resources

About