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In the original article, there was a mistake in Scheme 1 as published. R1 in compounds 1j, 1k, 1l, 1m, 1n, 1o, and 1p should be “F” instead of “H”. The corrected Scheme 1 appears below.
Synthesis of spiropyrazoline oxindoles 1a–r: Reagents and conditions: (a) Et3N, CH2Cl2, rt, 16–24 h.
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
