Tag: 6298-37-9

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6298-37-9,Quinoxalin-6-amine,as a common compound, the synthetic route is as follows.

6298-37-9, 6-Amino-5-bromoquinoxaline hydrobromide 6-Aminoquinoxaline (2.08 g, 14.4 mmol) was dissolved in 11.5 ml glacial acetic acid. The solution was cooled in water while a solution of bromine (0.74 ml, 2.3 g, 14.4 mmol) in 1.5 ml glacial acetic acid was added slowly over 15 min. After stirring for an additional 30 min, the orange red solid formed was filtered off and washed thoroughly with dry ether. The solid was dried in vacuo overnight to yield 4.44 g crude product (a yield of 100%). The compound, 6-amino-5-bromoquinoxaline hydrobromide, had no definite melting point. A phase change (from fine powder to red crystals) was noticed at about 220 C. Decomposition was observed at about 245 C. It was used directly for the next step.

The synthetic route of 6298-37-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Allergan; US6323204; (2001); B1;; ; Patent; Allergan; US5552403; (1996); A;; ; Patent; Allergan, Inc.; US5021416; (1991); A;,
Quinoxaline – Wikipedia
Quinoxaline | C8H6N2 | ChemSpider

6298-37-9,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6298-37-9,Quinoxalin-6-amine,as a common compound, the synthetic route is as follows.

METHOD B To a stirred solution of 6-aminoquinoxaline (3 g.) in glacial acetic acid at room temperature was added dropwise over a period of one minute a solution of iodine monochloride (4.5 g.) in glacial acetic acid (15 ml.). Stirring at room temperature was continued for a further 30 minutes, after which the precipitated solid was collected by filtration and washed with diethyl ether to afford 6.5 g. of 6-amino-5-iodoquinoxaline hydrochloride, as a complex with iodine, m.p. 167-169 with decomposition. Analysis: Found: C, 21.79; H, 1.58; N, 9.66%. Required for C8 H6 IN3.I.HCl: C, 22.11; H, 1.63; N, 9.67%.

As the paragraph descriping shows that 6298-37-9 is playing an increasingly important role.

Reference£º
Patent; Pfizer Inc.; US4029792; (1977); A;,
Quinoxaline – Wikipedia
Quinoxaline | C8H6N2 | ChemSpider

6298-37-9, Quinoxalin-6-amine is a quinoxaline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Procedure A: The isothiocyanate compound (1 equiv) was added to the solution of amine (1 equiv) in 5 ml of a mixture of dichloromethane and acetonitrile (1:1, v/v). The mixture was cooled to 0C. Then, triethylamine (2 equiv) was added gradually. The mixture was stirred at 0C for 15 min, after which stirring was continued at room temperature for 2-10 h. The reaction mixture was concentrated, extracted with dichloromethane, and washed with brine.The organic layer was dried over MgSO4 and purified by column chromatography (MeOH/CH2Cl2) or by preparative TLC (MeOH/CH2Cl2) to afford the desired product.

As the paragraph descriping shows that 6298-37-9 is playing an increasingly important role.

Reference£º
Article; Lee, Jeewoo; Tran, Phuong-Thao; Hoang, Van-Hai; Thorat, Shivaji A.; Kim, Sung Eun; Ann, Jihyae; Chang, Yu Jin; Nam, Dong Woo; Song, Hyundong; Mook-Jung, Inhee; Lee, Jiyoun; Bioorganic and Medicinal Chemistry; vol. 21; 13; (2013); p. 3821 – 3830;,
Quinoxaline – Wikipedia
Quinoxaline | C8H6N2 | ChemSpider