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Acid-catalyzed Dakin oxidation of benzaldehydes 371a–c and acetophenones 371d–f by H2O2/H3BO3 in THF.
 | |||
| Compound | Carbonyl compound | Reaction time, h | Yield, % 372a–f |
| 371a | R1 = R2 = R3 = R4 = H | 12 | 74 |
| 371b | R1 = OH, R2 = R3 = R4 = H | 7 | 80 |
| 371c | R1 = R2 = R4 = H, R3 = OH | 24 | 90 |
| 371d | R1 = OH, R2 = R3 = H, R4 = Me | 36 | 90 |
| 371e | R1 = R2 = R3 = H, R4 = Me | 24 | 63 |
| 371f | R1 = R2 = H, R3 = NO2, R4 = Me | 48 | 60 |
