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Цепочка c6h6 x1 c7h6cl2. C2h4 c2h5cl н-бутан br2 x1 Koh x2 kmno4 x3. Бензол+ c2h5cl. C6h6+c2h5cl.
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Цепочка c6h6 x1 c7h6cl2. C2h4 c2h5cl н-бутан br2 x1 Koh x2 kmno4 x3. Бензол+ c2h5cl. C6h6+c2h5cl. 