Month: March 2021

13526-66-4, name is 3-Bromo-6-chloroimidazo[1,2-b]pyridazine, belongs to chlorides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Computed Properties of C6H3BrClN3

3-Bromo-6-chloro-imidazo[1,2-b]pyridazine (CAS 13526-66-4, 1.327 g, 5.71 mmol) was dissolved THF (40 mL) and under nitrogen conditions, it was cooled down to 0 0C and ethyl magnesium bromide solution (1 M, 6.85 mL) was added. The RM was stirred at RT for 30 min then a solution of 7-fluoro-quinoline-6-carbaldehyde (Intermediate K, 1.0 g, 5.71 mmol) in THF (20 mL) was added by 0 0C. The RM was stirred at RT for 2 h. The solvent was partially removed by evaporation and water (40 mL) was added to the residual mash. After 1 h stirring, the crystallized product was filtered and dried overnight under vacuum to afford the title compound as a powder (tR 3.70 min (conditions 5), MH+ = 329, 1H-NMR in DMSO-d6: 8.90 (dd, 1H); 8.46 (d, 1H); 8.29 – 8.23 (m, 2H); 7.72 (d, 1H); 7.54 – 7.49 (m, 2H); 7.40 (d, 1 H); 6.56 – 6.49 (m, 2H)).

The synthetic route of 13526-66-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; NOVARTIS AG; FURET, Pascal; McCARTHY, Clive; SCHOEPFER, Joseph; STUTZ, Stefan; WO2011/15652; (2011); A1;,
Chloride – Wikipedia,
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In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 202197-26-0, name is 3-Chloro-4-((3-fluorobenzyl)oxy)aniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 3-Chloro-4-((3-fluorobenzyl)oxy)aniline

A stirred suspension of 3W-6-iodoquinazolin-4-one in toluene (5 vols) is treated with tri-n-butylamine (1.2 equiv.), and then heated to 70-800C. Phosphorous oxychloride (1.1 equiv.) is added and the reaction mixture is then heated to reflux and stirred at this temperature for at least 2 hours. The reaction mixture is then cooled to 55C and toluene (5vol) added followed by 3-chloro-4-{[(3-fluorophenyl)rnethyl]oxy}aniline (1.03 equiv.). The reaction mixture is then warmed to 70-900C and stirred for at least 2 hours. The resultant slurry is transferred to a second vessel. The temperature is adjusted to 70-750C and 8 molar aqueous sodium hydroxide solution (2 vols) added over 1 hour, followed by water (6vol.) maintaining the contents at 70-850C. The mixture is stirred at 70-850C for ca. 1 hour and then cooled to 20-250C. The suspension is stirred for ca. 2 hours and the product collected by filtration, and washed successively with water, 0.1 molar aqueous sodium hydroxide, water, and IMS, then dried in vacuo. EPO

The synthetic route of 202197-26-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SMITHKLINE BEECHAM [CORK] LIMITED; WO2006/113649; (2006); 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. 7781-10-4, name is 4-Chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine, A new synthetic method of this compound is introduced below., Quality Control of 4-Chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine

To a mixture of tert-butyl (S)-2-amino-4-(((R)-2-methoxypropyl) (4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl) butyl)amino) butanoate (149 mg, 344 mumol) and 4-chloro-7-methyl-7H-pyrrolo[2,3-d]pyrimidine (48 mg, 286.40 mumol) in t-AmOH (3 mL) was added 2.0M t-BuONa in THF (286 muL, 572 mumol) and tBuXPhos-Pd-G3 (23 mg, 29 mumol) and the resulting mixture was heated to 100 C. for 15 h. The reaction mixture was cooled to rt and then concentrated in vacuo to give a (S)-tert-butyl 4-(((R)-2-methoxypropyl) (4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl) butyl)amino)-2-((7-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl) amino) butanoate intermediate, LCMS (ESI+): m/z=566.5 (M+H)+, which was used without further purification. Of the butanoate intermediate, 80 mg, 141 mumol, was taken up in DCM (1 mL) and TFA (400 muL) and the resulting mixture was stirred at rt for 6 h and then concentrated in vacuo. The crude residue was purified by chiral SFC to give a first fraction containing the title compound. LCMS (ESI+): m/z=510.3 (M+H)+. 1H NMR (400 MHz, Methanol-d4) delta ppm 8.18 (s, 1H) 7.19 (d, J=7.28 Hz, 1H) 7.08 (d, J=3.53 Hz, 1H) 6.59 (d, J=3.53 Hz, 1H) 6.40 (d, J=7.28 Hz, 1H) 4.61 (t, J=6.17 Hz, 1H) 3.76 (s, 4H) 3.34-3.40 (m, 3H) 3.33 (s, 3H) 3.22-3.29 (m, 1H) 2.99-3.19 (m, 4H) 2.69 (t, J=6.17 Hz, 2H) 2.58 (br s, 2H) 2.32-2.43 (m, 1H) 2.11-2.21 (m, 1H) 1.86 (dt, J=11.52, 6.04 Hz, 2H) 1.74 (br s, 4H) 1.16 (d, J=5.95 Hz, 3H).

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; Pliant Therapeutics, Inc.; CHA, Jacob; DONG, Chengguo; HOM, Timothy; JIANG, Lan; LEFTHERIS, Katerina; LI, Hui; MORGANS, JR., David J.; MUNOZ, Manuel; REILLY, Maureen; ZHENG, Yajun; (232 pag.)US2019/276449; (2019); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 108-37-2,Some common heterocyclic compound, 108-37-2, name is 1-Bromo-3-chlorobenzene, molecular formula is C6H4BrCl, 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.

Preparation of 2-bromo-6-chlorobenzaldehyde (i-5b). To a solution of l-bromo-3-chlorobenzene (i-5a) (5 g, 26. mmol) in THF (50 mL) was added LDA (1 M, 31.3 mL, 8.7 mmol) dropwise via an addition funnel at -70 C. The mixture was stirred at -70 C for 1 h. DMF (2.87 mL, 39.1 mmol, 227 mmol) in THF (20 mL) was added dropwise maintaining the internal temperature below -70 C. The reaction was stirred vigorously at -70 C for 1 h. Warmed to -30 C, the reaction was poured into 1 M HCl (100 mL) partitioned between water (10 mL) and DCM (30 mL). The aqueous layer was extracted with DCM (20 mL x 3). The combined organic layers were dried over anhydrous Na2S04 and concentrated in vacuo to afford the title compound (3.6 g, yield: 59 %). LCMS (ESI) calc’d for C7H4BrC10 [M+H]+: 219, found: 219.

The synthetic route of 108-37-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MERCK SHARP & DOHME CORP.; BARR, Kenneth Jay; BEINSTOCK, Corey; MACLEAN, John; ZHANG, Hongjun; BERESIS, Richard Thomas; WO2014/28591; (2014); A2;,
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. 210532-25-5, name is 3,5-Difluorobenzene-1-sulfonyl chloride, This compound has unique chemical properties. The synthetic route is as follows., Formula: C6H3ClF2O2S

Step 6-Preparation of N-[3-(5-chloro-1H-pyrrolo[2,3-b]pyridine-3-carbonyl)-2,4-difluoro-phenyl]-3,5-difluorobenzenesulfonamide (58)Into a microwave reaction vessel were combined (3-amino-2,6-difluoro-phenyl)-(5-chloro-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanone (56, 50 mg, 0.16 mmol), 3,5-difluorobenzenesulfonyl chloride (57, 103 mg, 0.49 mmol), pyridine (0.5 mL, 6.1820 mol) and tetrahydrofuran (3.0 mL). The reaction was warmed in the CEM microwave at 300 watts, 130 C. for 10 minutes. The reaction mixture was partitioned between ethyl acetate and brine. The organic layer was collected, dried over Na2SO4, filtered and concentrated. The compound (58) was isolated using column chromatography (silica, hexane:ethyl acetate 70:30) to obtain 36 mg (46%) compound. MS=482.0.

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 210532-25-5.

Reference:
Patent; Spevak, Wayne; Cho, Hanna; Ibrahim, Prabha N.; Shi, Shenghua; Mamo, Shumeye; Gillette, Samuel J.; Zhu, Hongyao; US2008/167338; (2008); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 108-37-2,Some common heterocyclic compound, 108-37-2, name is 1-Bromo-3-chlorobenzene, molecular formula is C6H4BrCl, 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.

Under similar experimental conditions and reagent amounts in 2.2., the mixture was dissolved in 0.02 mL of IL and 1 mL of DMF. The organic phase was passed through silica gel in order to retain the IL and analyzed by GC and the isolated products characterized by 1H NMR, GC-MS, IR, and mp.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Bromo-3-chlorobenzene, its application will become more common.

Reference:
Article; Cardenas, Juan C.; Fadini, Luca; Sierra, Cesar A.; Tetrahedron Letters; vol. 51; 52; (2010); p. 6867 – 6870;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 729590-57-2, name is 4-(Benzyloxy)-1-bromo-2-chlorobenzene belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 729590-57-2

Step B; 3-chloro-4-ethylacrylate-benzyloxyphenol; Ethyl acrylate (5.0 mL, 55.5 mmol) is added to a solution of 4-bromo-3- chlorobenzyloxyphenol (2.7 g, 9.08 mmol), palladium acetate (215 mg, 0.96 mmol), P (o- tol) 3 (550 mg, 1.8 mmol) and Et3N (3 mL, 21.5 mmol) in EtCN (100 mL, HPLC grade). The mixture is warmed to 95C and stirred at that temperature overnight (c. a. 16 h). It is allowed to reach r. t. , filtered trough Celite and partitioned between EtOAc and H20. The organic layer is dried, filtered and concentrated, and the resulting crude is flash chromatographed on Si02 (5% EtOAc/hexanes) to afford 1.79 g of the Heck product (62%, white solid).

The synthetic route of 729590-57-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ELI LILLY AND COMPANY; WO2005/66136; (2005); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2106-02-7, name is 2-Chloro-4-fluoroaniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Safety of 2-Chloro-4-fluoroaniline

[446] 2-chloro-4-fluoroaniline (1 g, 7 mmol) was added to concentrated sulfuric acid (15 mL) at Q0 C, followed by the addition of guanidine nitrate (875 mg, 7 mmol). The mixture was warmed to it and stirred for 2 h. Subsequently, the mixture was poured onto ice and neutralized with aqueous sodium hydroxide (4N) until the pH was 9. The mixture was diluted with EtOAc and water, the organic phase was isolated and the aqueous phase was extracted with additional EtOAc (2x). The combined organic layers were washed with water, dried over sodium sulfate, filtered and concentrated in vacuo. The resulting residue was purified by flash column chromatography on silica gel (0% – 10% EtOAc/heptane) to afford 2-chloro- 4-fluoro-5-nitroaniline (A2) as light brown solid.

The synthetic route of 2106-02-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ARIAD PHARMACEUTICALS, INC.; HUANG, Wei-Sheng; LI, Feng; DALGARNO, David, C.; GONG, Yongjin; ISHCHENKO, Alexey, V.; KOHLMANN, Anna; SHAKESPEARE, William, C.; WEST, Angela, V.; XU, Yongjin; YOUNGSAYE, Willmen; ZHANG, Yun; ZHOU, Tianjun; ZHU, Xiaotian; (444 pag.)WO2015/175632; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Some common heterocyclic compound, 384-16-7, name is 2-Bromo-1-chloro-3-(trifluoromethyl)benzene, molecular formula is C7H3BrClF3, 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. Safety of 2-Bromo-1-chloro-3-(trifluoromethyl)benzene

2-Bromo-1-chloro-3-trifluoromethylbenzene (2.49 g)In tetrahydrofuran (25 mL) at -78 C.,n-Butyllithium (1.58 N hexane solution, 6.10 mL) was added,And the mixture was stirred at the same temperature for 30 minutes.Then, the obtained lithio compoundAt -78 C.,Imidazo [1,5-a] pyridine-3-carboxaldehyde (700 mg) in tetrahydrofuran (25 mL), and the mixture was stirred at -78 C. for 1 hour. Water was added to the reaction solution, and the mixture was extracted three times with ethyl acetate. The organic layer was dried over magnesium sulfate, concentrated under reduced pressure, and then purified by silica gel column chromatography (ethyl acetate / hexane) to obtain the title compound (1.22 g) as a pale yellow solid.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 384-16-7, its application will become more common.

Reference:
Patent; DAIICHI SANKYO COMPANY LIMITED; NAGAMOCHI, MASATOSHI; KOZAWA, YUJI; INAGAKI, HIROAKI; GOTANDA, KENTOKU; NOGUCHI, TETSUJI; TORIHATA, MUNEFUMI; YOSHINO, TOSHIHARU; ISOBE, TAKASHI; (113 pag.)JP2016/141632; (2016); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

2770-11-8, name is 2-(4-Chlorophenoxy)aniline, belongs to chlorides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. category: chlorides-buliding-blocks

Preparation of l-{4-[2-(4-chlorophe?oxy)phenylamino]-piperidin-l-yl}-ethanoneSTX1629 Cj9H21ClN2O2, MW: 344.8572To a solution of 2-(4-chlorophenoxy)phenylamine (200 mg, 0.91 mmol), l-acetyl-4- piperidone (277 mg, 1.96 mmol) and acetic acid (294 mg, 4.9 mmol) in DCE (3 ml) was added sodium triacetoxyborohydride (519 mg, 2.45 mmol). This solution was then heated at 1000C for 15 minutes in a CEM discover microwave (fixed hold time set to on). The reaction mixture was then quenched with saturated aqueous sodium bicarbonate solution (10 ml) and extraction with ethyl acetate (3 x 10 ml) followed. The combined organics were concentrated in vacuo and purification by flash chromatography proceeded (eluant: 8:2 hexane: ethyl acetate) to provide the title compound as a transparent oil (263.5 mg, EPO 84%). Analytical data as previously reported. HPLC: 98.13% (2.747 min; isocratic, 90% acetonitrile: 10% water at 1 ml/min).

The synthetic route of 2770-11-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; STERIX LIMITED; WO2007/3934; (2007); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics