Optimization of the photocatalytic XAT-enabled cyanation with isonitriles^a.

Entry	Solvent	4CzIPN (mol%)	Yield %
1	MeCN	5.0	88
2	MeCN	2.0	91
3	DMSO	2.0	50
4	Acetone	2.0	69
5b	MeCN	2.0	0
6c	MeCN	2.0	0
7d	MeCN	—	0

^aThe reactions were performed on a 0.20 mmol scale and the yields were determined after isolation by column chromatography purification.

^bThe reaction was performed in the absence of triethylamine.

^cThe reaction was performed in the absence of light.

^dThe reaction was performed in the absence of photocatalyst. See ESI for further details.