The 1H and 13C chemical shifts, proton‐proton coupling constants, and one‐bond carbon‐hydrogen coupling constants have been obtained for 7‐azaindole, 1‐methyl‐7‐azaindole, their corresponding methyl iodide salts, and the related compound 7‐methyl‐7H‐pyrrolo [2,3‐b]pyridine. are different from those of either 7‐azaindole or 1‐methyl‐7‐azaindole.
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Cox et al. (1980) studied this question.
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