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In Birch reduction reactant loses it aromatic chracter but still the product found is to be 90%. By loosing aromaticity product must be less stable so less amount of product must be formed. Why still on loosing product found is to be 90%?

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    $\begingroup$ Because you're using sodium... $\endgroup$ – Zhe Jun 28 '18 at 20:40
  • $\begingroup$ @Zhe What do you mean ? $\endgroup$ – Hercules Jun 30 '18 at 8:57
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    $\begingroup$ Sodium / ammonia is very forcing conditions. Sure you lost aromaticity, but the sodium got to lose an electron. $\endgroup$ – Zhe Jun 30 '18 at 12:46