Selectivity in the Photoproduct Ratios from Norrish II Reactions of a Homologous Series of 2-Alkanones in Their Melt and Solid Phases. Comparison with Other Environments

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Title:Selectivity in the Photoproduct Ratios from Norrish II Reactions of a Homologous Series of 2-Alkanones in Their Melt and Solid Phases. Comparison with Other Environments
Creators:
Weiss, Richard G.
Chandrasekhar, Sosale
Vilalta, Patricia M.
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 58, 1, pp. 142-152

Abstract

The product ratios from Norrish II reactions of 2-tridecanone, 2-tetradecanone, 2-pentadecanone, 2-hexadecanone, 2-heptadecanone, and 2-nonadecanone have been measured at low percents of conversion in the melt and solid phases. Although elimination/cyclization photoproduct ratios from the neat crystals are > 60 in optimal cases, the ratios of cyclobutanol diastereomers (cyclization products) remain near those observed from melt irradiations. From comparisons of the photoproduct selectivities in the neat solids and in their solid solutions, where the solvent molecules are similar in size and shape to the 2-alkanones, it is concluded that the crystalline lattices of some foreign hosts offer environments to the pre-product biradical intermediates, which are at least as restrictive as the environments of the solid 2-alkanones.

Title:Selectivity in the Photoproduct Ratios from Norrish II Reactions of a Homologous Series of 2-Alkanones in Their Melt and Solid Phases. Comparison with Other Environments
Creators:
Weiss, Richard G.
Chandrasekhar, Sosale
Vilalta, Patricia M.
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:58
Number:1
Page Range:pp. 142-152
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19930142UNSPECIFIED
ID Code:136
Item Type:Article
Deposited On:06 Feb 2009 16:58
Last Modified:06 Feb 2009 15:58

Citation

Weiss, Richard G.; Chandrasekhar, Sosale; Vilalta, Patricia M. (1993) Selectivity in the Photoproduct Ratios from Norrish II Reactions of a Homologous Series of 2-Alkanones in Their Melt and Solid Phases. Comparison with Other Environments. Collection of Czechoslovak Chemical Communications, 58 (1). pp. 142-152. ISSN 0010-0765

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