Temperature Dependent Solvent Effects in Photochemistry of 1-Phenylpentan-1-ones

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Title:Temperature Dependent Solvent Effects in Photochemistry of 1-Phenylpentan-1-ones
Creators:
Klán, Petr
Literák, Jaromír
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 64, 12, pp. 2007-2018
Uncontrolled Keywords:Norrish Type II reaction, Photochemistry, Solvent effects, Ketones, Valerophenone

Abstract

Temperature dependent solvent effects have been investigated on the Norrish Type II reaction of 1-phenylpentan-1-one and its <i>p</i>-methyl derivative. Efficiencies of the photoreaction were studied in terms of solvent polarity and base addition as a function of temperature. Such a small structure change as the <i>p</i>-methyl substitution in 1-phenylpentan-1-one altered the temperature dependent photoreactivity in presence of weak bases. The experimental results suggest that the hydrogen bonding between the Type II biradical intermediate OH group and the solvent is weaker for 1-(4-methylphenyl)pentan-1-one than that for 1-phenylpentan-1-one at 20 °C but the interactions probably vanish in both cases at 80 °C. <p>

Title:Temperature Dependent Solvent Effects in Photochemistry of 1-Phenylpentan-1-ones
Creators:
Klán, Petr
Literák, Jaromír
Uncontrolled Keywords:Norrish Type II reaction, Photochemistry, Solvent effects, Ketones, Valerophenone
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:64
Number:12
Page Range:pp. 2007-2018
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19992007UNSPECIFIED
ID Code:1612
Item Type:Article
Deposited On:06 Feb 2009 17:11
Last Modified:06 Feb 2009 16:11

Citation

Klán, Petr; Literák, Jaromír (1999) Temperature Dependent Solvent Effects in Photochemistry of 1-Phenylpentan-1-ones. Collection of Czechoslovak Chemical Communications, 64 (12). pp. 2007-2018. ISSN 0010-0765

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