Variation of the enantioselection of the copper-catalysed intramolecular Büchner reaction of diazoketones with the nature of the counterion is reported; significantly the presence of the noncoordinating BARF anion leads to enhanced enantioselectivities when the aryl group bears electron-withdrawing halo substituents.
No takes yet. Share an insight, caveat, or question.
Maguire et al. (2009) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: