Figure 4: Imines as electrophile substrates in the Cu/NHC relay catalysis system.
From: Metal and carbene organocatalytic relay activation of alkynes for stereoselective reactions

The minor diastereomer of the product 7a–g was not detected.
From: Metal and carbene organocatalytic relay activation of alkynes for stereoselective reactions
The minor diastereomer of the product 7a–g was not detected.