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. Author manuscript; available in PMC: 2014 Dec 11.
Published in final edited form as: J Am Chem Soc. 2013 Nov 22;135(49):18323–18326. doi: 10.1021/ja410478a

Table 1.

Initial Studies towards the β-Coupling of Ketones.

graphic file with name nihms544125t1.jpg
entry photocatalyst base additive solvent yielda
1 Ir(ppy)3 NaOAc -- DMPU 52%
2 Ir(ppy)3 2,6-lutidine -- DMPU 34%
3 Ir(ppy)3 DABCO -- DMPU 67%
4 Ir(p-MeO ppy)3 DABCO -- DMPU 65%
5 Ir(ppy)2(dtbbpy)PF6 DABCO -- DMPU 59%
6 Ir(ppy)3 DABCO -- DMF 59%
7 Ir(ppy)3 DABCO CsClO4 DMPU 72%
8 Ir(ppy)3 DABCO KAsF6 DMPU 75%
9 Ir(ppy)3 DABCO LiAsF6 DMPU 81%
10 none DABCO LiAsF6 DMPU 0%
11 Ir(ppy)3b DABCO LiAsF6 DMPU 0%
12 Ir(ppy)3c DABCO LiAsF6 DMPU 0%
a

Yield determined by 1H NMR using 1,3-benzodioxole as an internal standard.

b

Reaction performed in the absence of catalyst 3.

c

Reaction performed in the absence of light. CFL = compact fluorescent light.