Entry variation from ”standard conditions” yield of 2[b]
1 none 89% (85%)[c]
2 [Ir(dF(CF3)-ppy)2(5,5’dCF3-bpy)]PF6 81%
3 [Ir(dF(CF3)-ppy)2(5,5’dF-bpy)]PF6 71%
4 [Ir(dF(CF3)-ppy)2(dtbbpy)]PF6 34%
5 Co(dmgH)2PyCl 88%
6 Co(dmgH)2Cl2 44%
7 Co(dmgBF2)2·H2O 18%
8 TBSOTf 82%
9 TESOTf 6%
10 TMSOTf 5%
11 2,6-di-Me-Pyr 81%
12 DABCO n.d.
13 DIPEA n.d.
14 KOAc n.d.
15 DCE 77%
16 DCM 61%
17 CH3CN 45%
18 No light n.d.
19 No PC or Co n.d.