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Attempted nitrosation of octaethylporphyrin, mesoporphyrin dimethyl ester, and octaethylhaemin with acidified nitrite solutions gives meso-nitro derivatives, and nitrosylation of octaethylhaemin and protohaemin dimethyl ester gives the corresponding nitrosylhaems; under suitable conditions the latter substances nitrosate secondary amines.
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Bonnett et al. (1975) studied this question.
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