Research Article
A Simple and Green Protocol for 2H-Indazolo[2,1-b]phthalazine-triones Using Grinding Method
Table 2
Synthesis of 2H-indazolo[2,1-b]phthalazine-trione derivatives under grinding.
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| Entry | Ar | R | (min) | Product | Yield (%)a |
| 1 | C6H5 | CH3 | 2 | a | 91 | 2 | 4-CH3C6H4 | CH3 | 2 | b | 90 | 3 | 4-CH3OC6H4 | CH3 | 5 | c | 88 | 4 | 4-FC6H4 | CH3 | 2 | d | 87 | 5 | 4-ClC6H4 | CH3 | 2 | e | 86 | 6 | 2-ClC6H4 | CH3 | 2 | f | 83 | 7 | 4-BrC6H4 | CH3 | 2 | g | 85 | 8 | 4-NO2C6H4 | CH3 | 2 | h | 92 | 9 | 4-OHC6H4 | H | 5 | i | 86 | 10 | 4-(CH3)2NC6H4 | H | 5 | j | 84 | 11 | 2-Naphthyl | H | 2 | k | 89 | 12 | 4-CH3C6H4 | H | 2 | l | 90 |
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Isolated yields.
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