| http://www.w3.org/ns/prov#value | - In brief, the cyclic acetals represented by the general formula (i) or (ii) are obtained by reacting a hexahydric alcohol such as sorbitol and mannitol represented by the general formula (iii) with a carbonyl compound such as a ketone and an aldehyde represented by the general formula (iv) for dehydration, or with a reactive derivative thereof for dealcoholization, both in the presence of acid cat
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