| prov:value
| - Illustrative of such activating groups are alkyl of up to 5 carbon atoms, e.g., methyl, ethyl, isopropyl or t-butyl; alkoxy of up to 5 carbon atoms, e.g., methoxy, ethoxy, botoxy, or amyloxy; halo, particularly chloro or bromo; and dialkylamino wherein each alkyl has up to 5 carbon atoms such as dimethylamino and diethylamino.
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