Abstract
Certain alcohol host compounds form host-guest inclusion complexes with a wide range of guest compounds through molecular aggregation. This occurs not only in solution but also in the solid state by molecular movement between host and guest crystals. In the host-guest molecular aggregation process, precise molecular recognition occurs. By using such molecular recognition, separation of isomers and enantiomers can be accomplished. When the separation of isomers by molecular recognition is combined with fractional distillation, stereoisomers with identical or similar boiling points, and enantiomers, can be separated by distillation. It is also possible to carry out selective thermal and photochemical reactions of guest compounds in their inclusion complex crystals. Especially, enantioselective photoreactions of prochiral guest compounds in their inclusion complexes formed by chiral host are particularly successful.
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