Category: 957187-27-8

Electric Literature of 957187-27-8, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 957187-27-8, name is 8-Bromo-6-chloroimidazo[1,2-a]pyridine. A new synthetic method of this compound is introduced below.

A 50-mL round-bottomed flask equipped with a reflux condenser was charged with 8-bromo-6-chloroimidazo[1,2-a]pyridine 101a (264 mg, 1.14 mmol), 5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-amine (328 mg, 1.14 mmol), Pd2(dba)3 (102 mg, 0.11 mmol), Xantphos (63 mg, 0.11 mmol), Cs2CO3 (3.58 g, 11.0 mmol), dioxane (20 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100 C. overnight. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 1:50 methanol/dichloromethane to afford 121a as an orange solid (290 mg, 66%). MS-ESI: [M+H]+385.1

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,957187-27-8, its application will become more common.

Reference:
Patent; GENENTECH, INC.; Crawford, James John; Ortwine, Daniel Fred; Young, Wendy B.; US2013/116262; (2013); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 957187-27-8, 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. 957187-27-8, name is 8-Bromo-6-chloroimidazo[1,2-a]pyridine, molecular formula is C7H4BrClN2, 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.

b) 8-(benzylthio)-6-chloroimidazo[1,2-a]pyridine A mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (2.50 g), benzylmercaptan (1.40 mL), tris(dibenzylideneacetone)dipalladium(0) (248 mg), 1,1′-bis(diphenylphosphino)ferrocene (298 mg), DIPEA (3.8 mL) and toluene (20 mL) was stirred under a nitrogen atmosphere at 100 C. for 2 hr. The reaction mixture was filtered to remove an insoluble material and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (3.01 g). 1H NMR (300 MHz, DMSO-d6) delta 4.47 (2H, s), 7.13 (1H, d, J=1.8 Hz), 7.22-7.39 (3H, m), 7.39-7.47 (2H, m), 7.59 (1H, d, J=1.1 Hz), 7.93 (1H, d, J=1.2 Hz), 8.64 (1H, d, J=1.9 Hz).

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 957187-27-8, 8-Bromo-6-chloroimidazo[1,2-a]pyridine.

Reference:
Patent; Takeda Pharmaceutical Company Limited; FUJIMOTO, Jun; LIU, Xin; KURASAWA, Osamu; TAKAGI, Terufumi; CARY, Douglas Robert; BANNO, Hiroshi; ASANO, Yasutomi; KOJIMA, Takuto; (159 pag.)US2019/169166; (2019); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 957187-27-8, 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 957187-27-8, name is 8-Bromo-6-chloroimidazo[1,2-a]pyridine. This compound has unique chemical properties. The synthetic route is as follows.

Step B: 2′-Amino-r,2,2-trimethyl-6-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)spiro[chroman-4,4′- imidazol]-5′(l’H)-one (50 mg, 0.13 mmol; see Example 103, Step A) and 8-bromo-6-chloroimidazo[l,2- ajpyridine (60 mg, 0.26 mmol) were diluted with dioxane (1 mL), followed by the addition of Pd(PPh3)4 (7.5 mg, 0.0065 mmol) and Na2C03 (324 mu, 0.65 mmol). The reaction was sealed, heated to 85C and stirred for 12 hours. The reaction was loaded directly onto silica gel and eluted with 1-10% methanol/DCM (1% Nu¾OmicronEta) to afford 2′-amino-6-(6-chloroimidazo[l,2-a]pyridin-8-yl)-l’,2,2- trimethylspiro[chroman-4,4′-imidazol]-5′(rH)-one (18 mg, 0.044 mmol, 34% yield), m/z (APCI-pos) M+l = 410.2

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 957187-27-8, 8-Bromo-6-chloroimidazo[1,2-a]pyridine.

Reference:
Patent; ARRAY BIOPHARMA INC.; HUNT, Kevin, W.; RIZZI, James, P.; COOK, Adam; WO2011/72064; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem