Category: 351447-07-9

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 351447-07-9 as follows. SDS of cas: 351447-07-9

(Example 1 Synthesis of Compounds 1-42, 1-96, and I-51) [Show Image]Step 1 To a solution of Compound (5) (1.90 g, 7.25 mmol) in tetrahydrofuran (20mL), phenylisocyanate (1.0mL, 9.43mmol) and triethylamine (1.5 mL, 10.9 mmol) were added. The solution was then stirred at room temperature for 1 hour. The precipitated powder was filtered, and then washed with water. The resulting powder was further washed with diethyl ether to yield Compound 1-42 (1.95 g, 63%) as a white powder. 1H-NMR (DMSO-d6) delta12.13 (1H, s), 7.57 (2H, d, J = 8.4 Hz), 7.45 (1H, d, J = 8.1 Hz), 7.37 (2H, t, J = 7.5 Hz), 7.17 (1H, d, J = 8.4 Hz), 7.08 (1H, t, J = 7.2 Hz), 4.28 (2H, br s), 4.03 (2H, br s) LC/MS (Method A): 2.54 min, [M+H]+ = 382.3.

According to the analysis of related databases, 351447-07-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Shionogi & Co., Ltd.; EP2341052; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Electric Literature of 351447-07-9, These common heterocyclic compound, 351447-07-9, name is 6-Iodo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Step D 5-(3,4-Dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)-pent-4-ynoic acid butyl ester (4-5) A suspension of 4-4 (0.113 g, 0.431 mmol) and n-butyl 4-pentynoate (0.0731 g, 0.474 mmol) in triethylamine (3.0 mL) was purged with Ar, then cooled to 0 C. Copper iodide (0.0021 g, 0.0108 mmol) and Pd(PPh3)2Cl2 (0.0076 g, 0.0108 mmol) were added, the ice bath was removed after ten minutes, and the resulting suspension was stirred overnight. The mixture was then partitioned between EtOAc and saturated NaHCO3 solution. The organic phase was washed with sat. NaHCO3 solution, water, and brine, then dried with MgSO4 and concentrated. Flash chromatography (silica, 45% EtOAc-Hexanes) yielded a clear, yellowish oil. 1H-NMR (CDCl3): delta 6.88 (d, J=7.9 Hz, 1 H), delta 6.69 (d, J=8.0 Hz, 1 H), delta 5.07 (br s, 1 H), delta 4.22 (t, J=4.4, 2 H), delta 4.10 (t, J=6.7 Hz, 2 H), delta 3.54 (m, 2 H), delta 2.70 (m, 2 H), delta 2.61 (m, 2 H), delta 1.61 (m, 2 H), delta 1.38 (m, 2 H), delta 0.92 (t, J=7.4 Hz, 3 H). MS (M++H) 289.1.

Statistics shows that 6-Iodo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine is playing an increasingly important role. we look forward to future research findings about 351447-07-9.

Reference:
Patent; Askew, Ben C.; Breslin, Michael J.; Duggan, Mark E.; Hutchinson, John H.; Meissner, Robert S.; Perkins, James J.; Steele, Thomas G.; Patane, Michael A.; US2001/53853; (2001); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com