13C‐NMR Spectroscopy of Mixed Dialkylzinc Compounds with Prochiral Alkyl Residues

The disputed existence of dialkylzinc compounds containing two different alkyl groups has now been established for 1. A 1 : 1 mixture of sBu2Zn and iPr2Zn exhibits additional 13C-NMR signals. The differing signals for C6′ and C6″ of 1 confirm that the group iPrZn is bonded to a chiral residue.