Table 3.
| |||
---|---|---|---|
entry | reductant | photocatalyst | yieldb |
1 | Hantzsch ethyl ester | 1 | 0%c |
2 | (MeO)3SiH or Et3SiH | 1 | 0% |
3 | TTMSS | Ir(ppy)3 | 0% |
4 | TTMSS | Ru(bpy)3(PF6)2 | 0% |
5 | TTMSS | Ru(phen)3Cl2 | 0% |
6 | Ph3SiH | 1 | 50% |
7 | Me2(TMS)SiH | 1 | 18% |
See Supporting Information for conditions.
Yields were obtained by 1H NMR analyses with mesitylene as an internal standard.
Gave an 80% yield of the biaryl product.