873302-36-4Relevant academic research and scientific papers
3-iodine-5-methoxypyridine synthesis method
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Paragraph 0008; 0009; 0010, (2017/11/30)
The invention relates to a 3-iodine-5-methoxypyridine synthesis method, and mainly aims to solve the technical problem of simplification of the 3-iodine-5-methoxypyridine synthesis method. The 3-iodine-5-methoxypyridine synthesis method is characterized by including the step: adding sodium nitrite into ice-salt baths of 3-amino-5-methoxypyridine and sulfuric acid solution to react to generate diazonium salt; adding iodide, replacing diazonium of the diazonium salt with iodine negative ions, taking strong alkaline solution as reaction liquid, adjusting pH (potential of hydrogen) to be 8-9, performing ethyl acetate extraction, performing spin drying, purifying coarse products by a chromatographic column to obtain a target product 1, namely, the 3-iodine-5-methoxypyridine. The 3-iodine-5-methoxypyridine mainly serves as a medical intermediate.
Rapid and efficient copper-catalyzed finkelstein reaction of (hetero)aromatics under continuous-flow conditions
Chen, Mao,Ichikawa, Saki,Buchwald, Stephen L.
supporting information, p. 263 - 266 (2015/02/05)
A general, rapid, and efficient method for the copper-catalyzed Finkelstein reaction of (hetero)aromatics has been developed using continuous flow to generate a variety of aryl iodides. The described method can tolerate a broad spectrum of functional groups, including N-H and O-H groups. Additionally, in lieu of isolation, the aryl iodide solutions were used in two distinct multistep continuous-flow processes (amidation and Mg-I exchange/nucleophilic addition) to demonstrate the flexibility of this method.
