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The synthesis of atropisomeric 2-substituted benzamides 2a–e, 3a–e, and 4a–e, and characterization by X-ray structure analysis of 2d, 2e, 3c, 3e, 4c, and 4e are reported. Dynamic 1 H NMR spectroscopic studies of benzamides 2b–d, 3b–d, and 4b–d indicate that only two of the four possible rotamers are present in solution, with population ratios ranging between 1.5:1 and 4.1:1. The measured free...
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