Adding a certain compound to certain chemical reactions, such as: 88511-27-7, 4-Amino-3-iodopyridine, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Recommanded Product: 88511-27-7, blongs to pyridine-derivatives compound. Recommanded Product: 88511-27-7
Step 2. To a 2 L 3-necked flask was added DMF (700 mL), triethylene diamine ( 168 g, 1 .5 mol), and 4-amino-3-iodopyridine (24, 1 10 g, 0.5 mol). The mixture was cooled with an ice-water bath and pyruvic acid (1 32 g, 1 .5 mol) was slowly added, followed by palladium acetate (4.49 g, 0.02 mol). Under nitrogen atmosphere, the mixture was heated to 1 15 C. The reaction generated effervescence. The reaction mixture was kept at 115- 120 C for 1 1 h, The mixture was concentrated under reduced pressure The residue was poured into water (500 mL), and concentrated HC1 was added to adjust pH to The above cake was added into 500 mL of water. Concentrated HCl was added (to ensure complete protonation) followed by 5 g of active carbon. The mixture was heated to reflux for 20 min and then filtration was performed while hot. The solid was discarded and the hot filtrate was placed in a refrigerator to allow the HCl salt of the desired product to precipitate. Upon cooling, filtration was performed which afforded a dark brown solid with a wet weight of 48 g as the HCl salt of the desired product. The solid was then added to 250 mL of water and the mixture was heated until a clear solution resulted. Solid NaOH was slowly added to adjust pH to 5-6, then active carbon and an addtional 500 mL of water was added. The mixture was heated to reflux for 30 min, then filtration was performed while hot. The resulting cake was added to 750 mL of water, heated to reflux, and filtered again. The cake thus obtained was discarded. The two batches of filtrate were combined and cooled in a refrigerator. The resulting precipitate was collected by vacuum filtration, then washed with ethanol to give the title compound as a slightly yellow solid (25 g, 31 %). MS (m/z, ES-): 161 . 1 [M-1], 323. 1 [2M-1]. 1H NMR (DMSO-d6, 400 MHz) delta 12.20 (br s, 1H), 8.97 (s, 1H), 8.27 (d, J = 5.6 Hz, 1 H), 7.41 (d, = 6.0 Hz, 1H), 7.23 (s, 1H).
The synthetic route of 88511-27-7 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; GENENTECH, INC.; FORMA TM, LLC; BAIR, Kenneth W.; BAUMEISTER, Timm R.; BUCKMELTER, Alexandre J.; CLODFELTER, Karl H.; DRAGOVICH, Peter; GOSSELIN, Francis; GUNZNER-TOSTE, Janet; HAN, Bingsong; LIN, Jian; LIU, Xiongcai; REYNOLDS, Dominic J.; SMITH, Chase C.; WANG, Zhongguo; ZAK, Mark; ZHANG, Yamin; ZHAO, Guiling; ZHENG, Xiaozhang; YUEN, Po-Wai; WO2013/127266; (2013); A1;,
Pyridine – Wikipedia,
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