Related Products of 71702-01-7, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 71702-01-7, name is 5-Bromo-6-chloronicotinonitrile, molecular formula is C6H2BrClN2, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
(a) Preparation of 3-bromo-2-chloro-5-formylpyridine 3-Bromo-2-chloro-5-cyanopyridine (8.6 g) in 90% formic acid (40 ml) and water (10 ml) were treated with Raney nickel/aluminum alloy (8.0 g) and the mixture stirred and heated to 55-60 for 6 hours. The mixture was left to stand for two days, and then filtered. The filtrate was diluted to 500 ml with water and extracted with ether (2*250 ml). The ether extract was washed with aqueous sodium carbonate, dried, and evaporated to give an oil. The oil was diluted with toluene which was then removed under reduced pressure. The residue was diluted with a little ether, the solution filtered, and the filtrate evaporated to give an oil identified as the required aldehyde.
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Reference:
Patent; Imperial Chemical Industries Limited; US4317913; (1982); A;,
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