Table 2.
Scope and limitations with regards to the nitroarene.
![]() | |||||
---|---|---|---|---|---|
entry | R1 | R2 | R3 | 3 | yield, %a |
1 | MeO2C | H | H | a | 83 (81)b |
2 | F3C | H | H | b | 84 |
3 | H | H | H | c | 66 |
4 | Cl | H | H | d | 85 |
5 | MeO | H | H | e | n.r. |
6 | O2N | H | H | f | 59 |
7 | H | F3C | H | g | 89 |
8 | H | Me | H | h | 73 |
9 | H | MeO | H | i | 85 |
10 | H | H | NC | j | 83 |
11 | H | H | Br | k | 89 |
12 | H | H | Et | l | 82 |
13 | H | H | OMe | m | 72 |
14 | −HC=CH−CH=CH− | H | n | 96 | |
15 |
![]() |
o | 75 |
Isolated after silica gel chromatography.
1 mmol reaction scale.