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The monoxides of 2, 6‐dimethyl‐(1), 2, 6‐diphenyl‐(2), and 2‐methyl‐6‐phenylpyrazines (3) were subjected to the reactions with phosphoryl chloride and acetic anhydride. Some reactions of the chloropyrazines and hydroxypyrazines obtained thus were also investigated.
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Ohta et al. (1983) studied this question.
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