Catalytic, enantioselective 1,3-dipolar cycloadditions of nitrile imines with methyleneindolinones are reported. The spiro[pyrazolin-3,3′-oxindole] products are formed in good yields (up to 98%) and high enantioselectivity (up to 99% ee).
Fetching data from CrossRef. This may take some time to load.
Organic & Biomolecular Chemistry
- Information Point