Table 2. Oxidation of (RN4)NiII(cycloneophyl) with various oxidants in MeCN.
| ||||
| Complex | Yield
a
(%) |
|||
| PhI(OAc)2 | NFTPT | TDTT | XeF2 | |
| 1 | 4; 22 | 17; 39 | 7; 19 | 20; 40 |
| 2 | 24; 13 | 32; 27 | 33; 15 | 50; 16 |
| 3 | 42; 10 | 96; 4 | 42; 9 | 99; 1 |
| 4 | ND b | 14; 44 | 6; 9 | ND b |
aReaction conditions: MeCN, 70 °C, 14 h. Yields (%) were determined by GC-FID vs. 1,3,5-trimethoxybenzene as internal standard. The first yield shown is for 1,1-dimethylbenzocyclobutene, while the second yield is for is tert-butylbenzene.
bNot determined.