Category: 66171-50-4

Application of 66171-50-4, In the chemical reaction process,reaction time,type of solvent,can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product.An updated downstream synthesis route of 66171-50-4 as follows.

Methyl-6-oxo-1-phenyl-1,6-dihydropyridine-3-carboxylate Methyl-6-oxo-1,6-dihydropyridine-3-carboxylate (6.0 g, 39.22 mmol), phenylboronic acid (5.74 g, 47.06 mmol), copper(II) acetate monohydrate (11.76 g, 58.82 mmol), pyridine (6.32 mL, 78.43 mmol) and molecular sieves (4 , 6.0 g) in dichloromethane (100 mL) was stirred at ambient temperature for 12 hours and filtered. Standard extractive work up provided a crude residue which was purified by silica gel column chromatography (100-200 mesh) (1-2% methanol in chloroform) to give the title compound as a brown solid (5.0 g, 56%). m.p. 100-105 C.; 1H NMR (400 MHz, CDCl3) delta 3.86 (s, 3H), 6.63 (d, J=9.5 Hz, 1H), 7.36-7.55 (m, 5H), 7.91 (dd, J=2.5, 9.9 Hz, 1H), 8.23 (d, J=2.5 Hz, 1H); IR (KBr) nu 3058, 2924, 2854, 1721, 1675, 1540, 1446, 1313, 1271, 1103 cm-1; MS 230 (M+1).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,66171-50-4, its application will become more common.

Reference:
Patent; AUSPEX PHARMACEUTICALS, INC.; US2008/319026; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 66171-50-4, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 66171-50-4, name is Methyl 6-hydroxynicotinate. This compound has unique chemical properties. The synthetic route is as follows.

General procedure: A 25 mL Teflon-sealed flask was charged with the corresponding 2-pyridone 1 (0.5 mmol), diaryliodonium salt 2 (0.75 mmol, 1.5 equiv),and Cs2CO3 (0.75 mmol, 1.5 equiv) under an air atmosphere. DCE (5mL) was added to the flask. Then, the reaction vessel was sealed witha Teflon cap. The reaction mixture was stirred at 120 C until the2-pyridone 1 was consumed completely (monitored by TLC). At thistime, the solvent was removed in vacuo and the residue was purifiedby flash column chromatography (the crude residue was dry loadedon silica gel, 1:20 to 1:1, EtOAc/PE) to provide the desired products 3and 4 (Scheme 2, Tables 2, 3).1-Phenylpyridin-2(1H)-one (3aa)19Yield: 0.054 g (63%); orange solid; mp 94-95 C.1H NMR (500 MHz, CDCl3): delta = 7.50-7.47 (m, 2 H), 7.43-7.36 (m, 4 H),7.34 (d, J = 8.5 Hz, 1 H), 6.66 (d, J = 10.5 Hz, 1 H), 6.25 (t, J = 7.0 Hz, 1 H).13C NMR (125 MHz, CDCl3): delta = 162.3, 140.9, 139.8, 137.9, 129.2,128.4, 126.4, 121.8, 105.8.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 66171-50-4, Methyl 6-hydroxynicotinate.

Reference:
Article; Li, Xiao-Hua; Ye, Ai-Hui; Liang, Cui; Mo, Dong-Liang; Synthesis; vol. 50; 8; (2018); p. 1699 – 1710;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem