622
K. Okuro et al. / Tetrahedron Letters 53 (2012) 620–622
[Rh], 2CO
R
R
N
N
NO2
N R
N
[Rh]
N
3
2CO2
Scheme 1. Possible reaction mechanism for indazole formation.
4. Halland, N.; Nazare, M.; R’kyek, O.; Alonso, J.; Urmann, M.; Lindenschmidt, A.
Angew. Chem., Int. Ed. 2009, 48, 6879.
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