Fig. 4: Impact of 1a-K on the direct irradiation of a mixture of 6 and 2a under blue LED irradiation.

The presence of 1a-K is necessary to obtain the indole cross-coupling product 3aa from the preformed vinylgold intermediate 6.
The presence of 1a-K is necessary to obtain the indole cross-coupling product 3aa from the preformed vinylgold intermediate 6.