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topchen01: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, лл 2014-10-24 16:24:39
Carbocation intermediate is formed when cyanate is treated with HCl catalyzed by anhydrous ZnCl2, which affords complex via electrophilic substitution on aromatic ring.  After the loss of proton, keto-imine intermediate is obtained, which leads to acylation product, aromatic ketone, by hydrolysis.
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