Bicycle pedal photoisomerization of 1-phenyl-4-(4-pyridyl)-1,3-butadienes in glassy isopentane at 77 K

Source
Photochemical and Photobiological Sciences
ISSN
1474905X
Date Issued
2013-01-01
Author(s)
Redwood, Christopher E.
Samudrala, Ramakrishna
Saltiel, Jack
DOI
Volume
12
Issue
10
Abstract
In glassy isopentane at 77 K, 1-phenyl-4-(4-pyridyl)-cis-1,cis-3-butadiene (cc-PPyB) and 1-phenyl-4-(4-pyridyl)-cis-1,trans-3-butadiene (ct-PPyB) can undergo simultaneous two-bond photoisomerization. Under the same conditions, 1-phenyl-4-(4-pyridyl)-trans-1,cis-3-butadiene (tc-PPyB) gives tt-PPyB, the ultimate photoproduct in all cases. © 2013 The Royal Society of Chemistry and Owner Societies.
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