Catalysts generated by combinations of Pd(TFA)2and pyridine-hydrazone ligands have allowed the asymmetric 1,2-addition of aryl boronic acids toN-carbamoyl (Cbz and Fmoc) protected glyoxylate-derived hydrazones, yielding a-aryl a-hydrazino esters/amides in high enantioselectivities. Subsequent removal of the carbamoyl moiety affords key building...
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November 29, 2022 (v1)PublicationUploaded on: March 24, 2023
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August 30, 2024 (v1)Publication
Catalysts generated by combinations of Pd(TFA)2 and pyridine-hydrazone ligands have been applied to 1,2 addition of arylboronic acids to aliphatic N-carbamoyl (Cbz) hydrazones, affording protected α- aryl monoalkylhydrazines with high enantioselectivities (37-99% ee). Subsequent removal of the benzyloxy carbonyl protecting group provides a...
Uploaded on: August 31, 2024