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Mercuration of azoxybenzene with mercuric acetate followed by treatment with sodium chloride yielded 2-chloromercuri-, m.p. 188°, and 4-chloromercuri-azoxybenzene, m.p. 230°. The former is more soluble in benzene than the latter. Mercuration of azoxybenzene with mercuric perchlorate yielded the same products.
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Ukai et al. (1953) studied this question.
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