18820-82-1Relevant articles and documents
Greenwood,Tranter
, p. 2878,2882 (1969)
Synthesis method for pyridine bromate
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Paragraph 0017-0034, (2021/05/29)
The invention provides a synthesis method for pyridine bromate. The synthesis method comprises the following steps: (1) adding hydrobromic acid with a concentration of 48 wt% into a reaction kettle, inserting a liquid outlet of a dropwise adding pipe below the liquid level of the hydrobromic acid, dropwise adding pyridine into the hydrobromic acid through the dropwise adding pipe for a reaction, keeping a temperature to be less than or equal to 55 DEG C in the process of the reaction, and adjusting a pH value to 1.5-2.5 after the reaction is finished to obtain a feed liquid; (2) heating and evaporating the feed liquid obtained in the step (1) at a temperature of 60-70 DEG C under a vacuum condition of -0.0095 to -0.085 MPa, feeding the feed liquid to a crystallizing tank after crystals appear, conducting cooling and crystallizing, and then performing centrifuging to obtain solid precipitates and mother liquor; and (3) washing the solid precipitate with pure water or methanol, conducting drying to obtain pyridine bromate, adding activated carbon into the mother liquor for decoloration, and returning the mother liquor for indiscriminate application. The method is convenient for industrial large-scale synthesis, high in quality yield and high in purity.
Unusual hydroalumination-bromination reaction of 1,4-butynediol
Gharibyan
, p. 138 - 139 (2013/03/29)
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