scheme39

Scheme 39. Spirolactonization reaction of 3-hydroxyoxindoles 69 and 3-trifluoroethylidene oxindoles 74. This figure is used with permission from the American Chemical Society[102].
Scheme 39. Spirolactonization reaction of 3-hydroxyoxindoles 69 and 3-trifluoroethylidene oxindoles 74. This figure is used with permission from the American Chemical Society[102].
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