Bromination of paraldehyde

The procedure given above is essentially a large-scale adaptation of that of Filachione.2 Bromoacetal has been prepared by the bromination of acetal directly,3 or in the presence of calcium carbonate 4 by action of sodium ethoxide on a,/3-dibromodiethyl ether by bromination of paraldehyde followed by action of ethyl alcohol 6 and by the action of ethyl alcohol on bromoacetal-dehyde.7... 

Bromination catalyst. In the bromination of paraldehyde to produce bromal, use of sulfur as catalyst increases the yield by 5-10% and causes no trouble in the workup. Paraldehyde is added over a period of about 4 hrs. to a mixture of bromine... 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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