Table 4.

Reaction scope of the visible light-mediated coupling of arenediazonium tetrafluoroborates 1 with CS₂ (2).

Substrate 1a	Product 3, yieldb	Substrate 1a	Product 3, yieldb
1a	3a, 80%, 50%c	1i	3i, 94%, 82%c
1b	3b, 81%, 78%c	1j	3j, 99%, 85%c
1c	3c, 85%, 72%c	1k	3k, 70%
1d	3d, 94%	1l	3l, 76%
1e	3e, 90%	1m	3m, 56%
1f	3f, 88%	1n	3n, 42%
1g	3g, 88%	1o	3o, 56%
1h	3h, 76%	1p	3p, 90%c, 92%c,d

^aReaction conditions: 1 (0.1 mmol), CS₂ (0.2 mmol), Ru(bpy)₃(PF₆)₂ (0.001 mmol), blue light (20 W), DMSO (2 mL), rt, 6 h; ^bisolated yields after chromatography on silica gel; ^cthe reactions were carried out with the diazonium salts 1 at a 5 mmol scale; ^dacetone was used as the solvent.