Enantioselective photoelectrocyclization within zeolites: tropolone methyl ether in chirally modified NaY
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Abraham Joy, V. Ramamurthy, Abraham Joy, John R. Scheffer and David R. Corbin
Abstract
Tropolone methyl ether, included within chirally modified Y zeolite, upon irradiation yields a product of 4e electrocyclization in ca. 40% ee.
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Calculations were performed on a CAChe STEREO Worksystem using the standard software programs, including molecular mechanics
employing MM2 parameters.
Very recently we found that ee could be improved to 65% when the samples are very dry. Experiments are underway to examine the effect of water
on the extent of ee.
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