Entrya | R1 | R2 | R3 and R4 | Time (h)b | BiBr3 (X mol%) | Yield (%)c |
1 | H | H | H | 24 | 20 | 72 [22] |
2 | H | H | R3 = CH3 R4 = H | 24 | 20 | 73 [22] |
3 | H | H | R3 = H R4 = Br | 25 | 50 | 78 [22] |
4 | H | OCH3 | H | 7 | 50 | 65 [27] |
5 | OCH3 | H | H | 24 | 20 | 84 [22] |
6 | H | CH3 | H | 26 | 20 | 85 [22] |
7 | CH3 | H | H | 26 | 20 | 88 [27] |
8 | F | H | H | 24 | 50 | 67 [27] |
9 | Cl | H | H | 24 | 50 | 67 [22] |
10 | H | Cl | H | 24 | 20 | 77 [22] |
11 | Br | H | H | 6.5 | 100 | 76 [38] |
12 | NO2 | H | H | 24 | 100 | 45 [22] |