Insertion into benzylic C–H Bonds.
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Entry | Product | R1 | R2 | Solvent | Yield (%) | er |
1 | 11a | Ph | H | CH2Cl2 | 60 | 97 : 3 |
2 | 11b a | Ph | OCH3 | CH2Cl2 | 69 | >99.5 : 0.5 |
3 | 11c | 4-CNC6H4 | OCH3 | CH3CN | 97 | 99 : 1 |
4b | 11d | 4-H3COC6H4 | OCH3 | CH2Cl2 | 98 | 99 : 1 |
5 | 11e | 3-Pyridyl | OCH3 | CH3CN | 82 | 94 : 6 |
6 | 11f | CH3 | OCH3 | CH2Cl2 | 56 | 60 : 40 |
With Rh2(S-PTAD)4 as catalyst.
Catalyst added at rt.