Supramolecular synthesis of 3-indolyl-3-hydroxy oxindoles under neutral conditions in water.

Various 3-indolyl-3-hydroxy oxindoles were prepared for the first time by supramolecular catalysis involving the reaction of beta-CD:isatin complexes with indoles under neutral conditions in water. beta-Cyclodextrin can be recovered and reused a number of times without loss of activity.

Supramolecular synthesis of selenazoles using selenourea in water in the presence of beta-cyclodextrin under atmospheric pressure.

Selenazoles were synthesized from alpha-bromo ketones and selenourea in the presence of beta-cyclodextrin in water at 50 degrees C under atmospheric pressure.