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. 2021 Jun 1;26(11):3323. doi: 10.3390/molecules26113323

Table 1.

Optimization studies.

graphic file with name molecules-26-03323-i001.jpg

Entry PC 1 Solv. Ratio 1a:3a
1 2 – DMSO 100:0
2 2,3 – DMSO 95:5
3 – DMSO 90:10
4 Ru(phen)3(PF6)2 (1%) DMSO 68:32
5 4CzIPN (2%) DMSO 33:67
6 3DPA2FBN (2%) DMSO 28:72
7 Ir(ppy)2dtbbpy PF6 (0.5%) DMSO 29:71
8 Ir(ppy)3 (0.3%) DMSO 15:85 (84) 4
9 Ir(ppy)3 (0.3%), 1.1 equiv of NEt3 DMSO 61:39
10 Ir(ppy)3 (0.3%) DMF 35:65
11 Ir(ppy)3 (0.3%) MeCN 57:43
12 Ir(ppy)3 (0.3%) CH2Cl2 85:15

1 Abbreviations: 4CzIPN, 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene; 3DPA2FBN, 2,4,6-tris(diphenylamino)-3,5-difluorobenzonitrile. 2 In the dark. 3 At 50 °C for 60 h. 4 Isolated yield.