Development of new transition metal catalysts for the oxidation of a hydroxamic acid with in situ Diels-Alder trapping of the acyl nitroso derivative

New transition metal catalysts have been prepared and applied for in situ formation of acyl nitroso dienophiles.

Catalytic enantioselective hetero-Diels-Alder reactions of an azo compound

This communication describes studies in which an azo hetero-Diels-Alder adduct was furnished in high regio- and enantioselectivity using azopyridine as a reagent and silver as a catalyst. The obtained hetero-Diels-Alder adduct was easily converted to the corresponding chiral 1,4-diamino alcohol.