Stereoselective Synthesis of Spirooxindole Amides through Nitrile Hydrozirconation
摘要:
Spirooxindole amides can be prepared by the intramolecular addition of functionalized indoles into acylimines that are accessed from nitriles by hydrozirconation and acylation. The stereochemical outcome at the quaternary center was controlled by the steric bulk of the substituent at the 2-position of the indole unit. The products are well-suited for diversification to prepare libraries.
Construction of a Spirooxindole Amide Library through Nitrile Hydrozirconation-Acylation-Cyclization Cascade
摘要:
A library of spirooxindoles containing varied elements of structural and stereochemical diversity has been constructed via a three step, one pot nitrile hydrozirconation-acylation-cyclization reaction sequence from common acyclic indole intermediates. The resulting library was evaluated for novelty through comparison with MLSMR and Maybridge compound collections.