Chlorates chlorohydrin

In two proposed alternative processes, the chlorine is replaced in the hypochlorination reaction by hypochlorous acid [7790-92-3] HOCl, or tert-huty hypochlorite. In the first, a concentrated (>10% by weight) aqueous solution of hypochlorous acid, substantially free of chloride, chlorate, and alkah metal ions, is contacted with propylene to produce propylene chlorohydrin (113). The likely mechanism of reaction is the same as that for chlorine, as chlorine is generated in situ through the equiUbrium of chlorine and hypochlorous acid (109). 

Hypochlorous acid - [CHLORINE OXYGEN ACIDS AND SALTS - CHLORIC ACID AND CHLORATES] (Vol 5) - [CHLOROHYDRINS] (Vol 6) - [CHLOROHYDRINS] (Vol 6)... 

Silver chloride precipitates. Other chlorates give mixtures of the glycol and the chlorohydrin. 

In the reaction of chlorine dioxide with water, hypochlorous, hydrochloric and chloric acids are formed temporarily, and in alkaline solutions chlorites (C102 ), chlorates (ClOj ) and other products arise. The cation H20C1 formed in aqueous solutions of chlorine, chlorine dioxide and hypochlorites may react with alkenes and other unsaturated compounds. The electrophilic addition of HOCl to alkenes is an established reaction mechanism for a, P-chloroalcohol (chlorohydrin) and a, -dichloro derivative formation (Figure 11.16). The reaction yielding chlorohydrins follows the Markovnikov rule with the hydroxyl group adding to the more substituted carbon. Oxidation of chlorohydrins by hypochlorites... 

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See also in sourсe #XX -- [ ]

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