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. 2014 Jul 7;79(24):11885–11902. doi: 10.1021/jo501392r

Figure 4.

Figure 4

Plot of y from eq 4 versus [THF] in hexanes cosolvent for the ortholithiation of ArH (0.050 M) with LDA (0.10 M) in the presence of added diisopropylamine (0.050 M) measured by 19F NMR spectroscopy at −78 °C. The curve depicts an unweighted least-squares fit to y = a[THF]n. [a = (0.03 ± 0.01) × 10–2, n = 2.6 ± 0.2].