Montmorillonite KlO-catalyzed

The montmorillonite KlO-catalyzed aza-Diels-Alder reaction of Danishefsky s diene with aldimines, generated in situ from aliphatic aldehydes and p-anisidine, proceeded smoothly in H20 or in aqueous CH3CN to afford 2-substituted 2,3-dihydro-4-pyridones in excellent yields (Eq. 12.47).115 Also, complex [(PPh3)Ag(CBiiH6Br6)] was shown to be an effective and selective catalyst (0.1 mol% loading) for a hetero-Diels-Alder reaction with Danishefsky s diene and the reaction showed a striking dependence on the presence of trace amounts of... 

B. Shanmugasundaram, A. K. Boseb, and K. K. Balasubramanian, Microwave-induced, montmorillonite KlO-catalyzed Ferrier rearrangement of tri-O-acetyl-D-galactal Mild, eco-friendly, rapid glycosidation with allylic rearrangement, Tetrahedron Lett., 43 (2002) 6795-6798. 

---