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. 2020 Jan 22;10(6):3615–3624. doi: 10.1039/d0ra00013b

Comparison of our protocols vs. reported methods for the preparation of 3aa.

graphic file with name d0ra00013b-u11.jpg
Entry Reagent system Temp. (°C) Time (h) Yield (%) Ref.
1 ArB(OH)2/Pd(OAc)2/phenanthroline/O2 100 20 85 5g
2 ArB(OH)2/Mn(OAc)2. 120 12 80 5m
3 Ar2IBF4/Cs2CO3 r. t. 72 80 5i
4 ArNHNH2/PhIO r. t. 9 81 5j
5 ArNH2/t-BuONO/CH3SO3H r. t. 1.5 81 5k
6 ArNH2/t-BuONO r. t. 48 89 5l
7 ArN2BF4/Eosin-Y/blue LED r. t. 3 71 6
8 ArNHNH2/K2S2O8 50 6 81 This report
9 ArB(OH)2/K2S2O8/K2CO3 80 2 80 This report