Tag: M.W=100-200

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. 15205-15-9, name is 2-Chloro-6-fluorobenzylamine, A new synthetic method of this compound is introduced below., COA of Formula: C7H7ClFN

General procedure: 2-Amino-5-bromonicotinic acid (250 mg, 1.15 mmol) was dissolved in 4 ml of DMF. The solution was cooled in an ice bath. Then to the solution were successively added HATU (460 mg, 1.21 mmol), DIPEA (210.68 mul, 1.21 mmol), (2,3-difluorophenyl)methanamine (173 mg, 1.21 mmol). The resulting solution was stirred at room temperature for 2 h and then the saturated sodium bicarbonate solution was added. The mixture was extracted with ethyl acetate (EA). The combined organic layers were dried over anhydrous Na2SO4 and concentrated under vacuum. The crude product was used in the next step without purification.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Article; Zhang, Dengyou; Ai, Jing; Liang, Zhongjie; Li, Chunpu; Peng, Xia; Ji, Yinchun; Jiang, Hualiang; Geng, Meiyu; Luo, Cheng; Liu, Hong; Bioorganic and Medicinal Chemistry; vol. 20; 17; (2012); p. 5169 – 5180;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 6781-98-2, name is 2-Chloro-1,3-dimethylbenzene, A new synthetic method of this compound is introduced below., Product Details of 6781-98-2

General procedure: A test tube was charged with aryl chlorides (0.5 mmol, 1 eq), arylboronic acid (0.75 mmol, 1.5 eq), K3PO4 (1 mmol, 2 eq), H2O (0.5 mL), isopropanol (0.5 mL) and catalyst (0.0005-0.001 mmol) and the mixture was then stirred at room temperature. After the reaction was finished, the mixture was extracted three times with CH2Cl2 (3 x 2mL), dried over Na2SO4, filtered, and the solvent was removed under vacuum. Further purification of the product was achieved by flash chromatography on a silica gel column.

The synthetic route of 6781-98-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Liu, Guiyan; Liu, Chengxin; Han, Fangwai; Wang, Zhongliang; Wang, Jianhui; Tetrahedron Letters; vol. 58; 8; (2017); p. 726 – 731;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 622-86-6, name is (2-Chloroethoxy)benzene, belongs to chlorides-buliding-blocks compound, 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 622-86-6, name: (2-Chloroethoxy)benzene

A.27 Synthesis of [(PhOCH2CH2)2ImH]Cl (27) (2-chloroethoxy)benzene (5.02 g, 32.05 mmol) and l-(trimethylsilyl)imidazole (1.33 g, 9.48 mmol) and toluene (5 mL) were stirred at 1 10C for 7 days in complete darkness. The resultant biphasic mixture was cooled to room temperature and the top layer was discarded. The viscous bottom layer was dissolved in dichloromethane (1 mL) and pentane (50 mL) was added. The precipitated oil was washed with pentane (3×20 mL) and dried under high vacuum (3.27 g, quantitative). The product is an extremely viscous wax which solidifies completely over the course of several weeks. The following analytical data were obtained. *H NMR (CD2C12): delta 1 1.12 (s, 1H, NCHN), 7.57 (s, 2H, NCHCHN), 7.26 (t, 3JH-H= 7.7 Hz, 4H, m- CH), 6.97 (t, 4.8 Hz, 4H, 2xCH2), 4.39 (vt, 3JH-H= 4.8 Hz, 4H, 2xCH2). 13C NMR Patent; THE GOVERNING COUNCIL OF UNIVERSITY OF TORONTO; LANXESS Deutschland GmbH; MUELLER, Julia Maria; STEPHEN, Douglas; LUND, Clinton; SGRO, Michael; ONG, Christopher; CARIOU, Renan; WO2013/24119; (2013); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 4535-90-4, name is 2-Chloro-N-methylethanamine hydrochloride, A new synthetic method of this compound is introduced below., COA of Formula: C3H9Cl2N

A suspension of N-Methyl-2-chloroethylammonium chloride (10 gm) in POCl3 (40 ml) was refiuxed (1350C) over night. After removing excess POCl3 under vacuum product 5i was distilled out under vacuum as light yellow oil and analyzed by 1H and 31P NMR spectroscopy to be pure.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; THRESHOLD PHARMACEUTICALS, INC.; WO2007/2931; (2007); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 7149-75-9, name is 4-Chloro-3-methylaniline, belongs to chlorides-buliding-blocks compound, 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 7149-75-9, Safety of 4-Chloro-3-methylaniline

Alternatively, to a solution of 4-chloro-3-methyl aniline (20.0 g, 0.141 mol) in MEOH (400 mL) was added drop-wise dimethyl acetylenedicarboxylate (21.07 g, 0.148 mol). The reaction mixture was stirred at ambient temperature for 30 minutes. The solvent was removed by evaporation and the residue was added to stirred diphenyl ether (300 mL), which has been preheated to 250°C. After 30 minutes, the mixture was cooled to ambient temperature and the resulting precipitate was collected and washed with 1 L of hot petroleum ether to give a mixture (29.0 g) of 2-methoxycarbonyl-6-chloro-7-methyl-4-oxoquinoline and 2- methoxycarbonyl-6-chloro-5-methyl-4-oxoquinoline as a gray solid.The mixture was dissolved in boiling methanol (1 L) and filtered hot. The collected solids were boiled in 1.2 L of methanol and filtered hot to afford (6. 45 g, 16percent) of 2-METHOXYCARBONYL-6-CHLORO-7-METHYL-4-OXOQUINOLINE

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 4-Chloro-3-methylaniline, and friends who are interested can also refer to it.

Reference:
Patent; SCHERING AKTIENGESELLSCHAFT; WO2004/52366; (2004); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 139512-70-2, These common heterocyclic compound, 139512-70-2, name is 4-Chloro-5-fluorobenzene-1,2-diamine, 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.

Typical procedure: Mix Et3N (2.53 mg, 0.025 mmol), 2-phenylacetaldehyde 1a (30 mg, 0.25 mmol), benzene-1,2-diamine 2a (32.4 mg, 0.3 mmol), in toluene (2.5 mL) under O2 (1 atm). The reaction mixture was stirred at 60 C for 12 h. After cooling down to room temperature and concentrating in vacuum, the residue was purified by flash chromatography on a short silica gel (eluent: petroleum ether/ethyl acetate=20:1) to afford 47 mg (91%) of 3aa.

Statistics shows that 4-Chloro-5-fluorobenzene-1,2-diamine is playing an increasingly important role. we look forward to future research findings about 139512-70-2.

Reference:
Article; Zhang, Chun; Xu, Zejun; Zhang, Liangren; Jiao, Ning; Tetrahedron; vol. 68; 26; (2012); p. 5258 – 5262;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 14752-66-0, 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. 14752-66-0 name is Sodium 4-chlorobenzenesulfinate, This 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.

A mixture of THF, K2CO3 (0.77 g 0 006 mol) and sodium 4-chloro- benzenesulfinate(0.75 g, 3.7 mmol) was stirred for 15 en blanket and cooled to 0-5 C. Naphth-2-ylmethylbromide (0.81 g, 3.7 mmol) was added to the reaction mixture. The mixture was stirred at 65 – 67 C for two hours and the solvent was removed by distillation. The resultant solid residue was recrystallized from isopropanol to give the title product, 0.30g, 51% yield, 99% purity by HPLC

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Sodium 4-chlorobenzenesulfinate, and friends who are interested can also refer to it.

Reference:
Patent; WYETH; RAVEENDRANATH, Sanjay; RAVEENDRANATH, Vijay; RAVEENDRANATH, Girija; WO2008/157216; (2008); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 33406-96-1, name is 1-Chloro-4-fluoro-2-methylbenzene, This compound has unique chemical properties. The synthetic route is as follows., Formula: C7H6ClF

2-Chloro-5-fluoro-4-nitrotoluene. To a stirred solution of 2-chloro-5-fluorotoluene (10.356 g, 71.628 mmol, Lancaster, used as received) in conc. H2 SO4 (70 mL) at 0 C., KNO3 (7.252 g, 71.72 mmol) was added in four equal portions. The resulting pale yellow solution was allowed to warm to room temperature and was stirred overnight at room temperature. It was then poured into ice water (350 g) and extracted with ether (3*100 mL). Ether was dried over anhydrous Na2 SO4, removed under vacuum, and the resulting oil was dried further under vacuum to afford 12.277 g (90%) of the title compound as an oil, which was used as such for the next reaction; 1 H NMR (CDCl3); delta2.459 (s, 2H), 7.193 (d, 1H, J1 =11.1 Hz), 8.083 (d, 1H, J1 =6.6 Hz).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 33406-96-1.

Reference:
Patent; State of Oregon, acting by and through the Oregon State Board of Higher Education, acting for and on behalf of the Oregon Health Sciences University and the University of Oregon, Eugene Oregon; Acea Pharmaceuticals, Inc.; The Regents of the University of California; US5631373; (1997); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 6775-78-6, name is 6-Chloroimidazo[1,2-b]pyridazine, belongs to chlorides-buliding-blocks compound, 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 6775-78-6, COA of Formula: C6H4ClN3

478 mg (3.1 1 mmol) of 6-chloroimidazo[1 ,2-b]pyridazine were introduced into 10 mL of chloroform under argon and, while cooling in ice, 664 mg (3.73 mmol) of N- bromo-succinimide were added. After the addition was complete, the reaction mixture was stirred at room temperature overnight. The reaction mixture was then mixed with water and ethyl acetate and, after addition of saturated sodium bicarbonate solution, the phases were separated. The aqueous phase was extracted three more times with ethyl acetate. The combined organic phases were then washed with saturated sodium chloride solution and dried over sodium sulfate. In the final removal of the solvent in vacuo, the desired product was isolated in quantitative yield in the form of an amorphous white solid which was employed without further chromatographic purification in subsequent reactions.1H-NMR (CHLOROFORM-d): delta [ppm] = 7.12 (d, 1 H); 7.79 (s, 1 H); 7.90, (d, 1 H).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 6-Chloroimidazo[1,2-b]pyridazine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; SCHULZE, Volker; EIS, Knut; PUEHLER, Florian; ZORN, Ludwig; SUeLZLE, Detlev; LIENAU, Philip; WENGNER, Antje Margret; PETERSEN, Kirstin; BOeMER, Ulf; WO2015/104254; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 918538-05-3, 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. 918538-05-3 name is 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine, This 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.

In a 25mL reaction vial, Pd(PPh3)2Cl2 (19mg, 0.027mmol) and 2N Na2CO3 solution (0.27mL, 0.54mmol) were added to a solution of 1-methyl-1H-pyrazole-4-boronic acid pinacol ester (55mg, 0.27mmol) and 12 (50mg, 0.27mmol) in dioxane (5mL). The mixture was stirred at 70C for 16h under N2 atmosphere. The reaction mixture was cooled to room temperature and filtrated. The filtrate was diluted with H2O (100mL) and then extracted with EtOAc, and the organic layer was dried over anhydrous Na2SO4, After filtration, the filtrate was evaporated and purified by chromatography (petroleum ether/EtOAc, 5:1) to give the product 20 as a yellow solid (55mg, 88%). MS (ESI) m/z: [M+H]+=234. 1H NMR (400M, DMSO-d6) delta 8.87 (s, 1H, ArH), 8.38 (s, 1H, ArH), 8.14 (s, 1H, ArH), 7.53 (d, 1H, J=4.8Hz, ArH), 7.10 (dd, 1H, J1=2.4Hz, J2=4.8Hz, ArH), 3.98 (s, 3H, ArCH3) ppm.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine, and friends who are interested can also refer to it.

Reference:
Article; Xin, Minhang; Zhang, Liandi; Tang, Feng; Tu, Chongxing; Wen, Jun; Zhao, Xinge; Liu, Zhaoyu; Cheng, Lingfei; Shen, Han; Bioorganic and Medicinal Chemistry; vol. 22; 4; (2014); p. 1429 – 1440;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics