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Plot of the initial rate19b versus [THF] for the dehydrobromination of cis-17 (0.050 M) with NaDA (0.10 M) at −50 °C in hexane (curve A) or 2,5-Me2THF (curve B). The curves depict unweighted least-squares fits. Curve A: y = k[THF]n: k = (3.23 ± 0.01) × 10–6; n = 2.39 ± 0.24. Curve B: y = k[THF]: k = (0.93 ± 0.03) × 10–4.
