Abstract
This chapter reviews and studies the CD mediated photochirogenic reactions published by late 2005. A fair number of supramolecular hosts or templates, including cyclodextrins, chirally modified zeolites, Kemp's triacid derivatives, bio-molecular, and chiral nanopores have been explained for asymmetric photo-chemical reactions. The chapter also briefly refers to such works that employ CDs as chiral hosts, but do not report the optical yields of photoproducts. The unimolecular asymmetric photo reactions discusses the geometrical photoisomerization, photocyclization, photodecarboxylation of aryl ester, and radical recombination of benzoin, under various conditions in CDs, and their interactions with guest molecules. The use of modified or functionalized CD as chiral inductors has been demonstrated to be one of the most promising strategies for overcoming the limitations of native CDs. The chapter also explains the reason why in most cases the optical yield obtained in the solid-state photolysis is higher than that in solution.
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