Category: 7051-34-5

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. 7051-34-5, name is (Bromomethyl)cyclopropane belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: (Bromomethyl)cyclopropane

To a stirred solution of 4-fluoro-3-hydroxyhenzonitriie (10.0 g, 78.7 mmoi) in dry DMF (100 mL), KCO3 (21.7 g, 157 mmol) was added followed by addition of cyciopropyimethyl bromide (12,8 g, 94.4 mmoi). The reaction mixture was heated at 90C for 4 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the reaction mixture was quenched with cold water and precptated solid was filtered, washed with pentane and dried under vacuum to afford VI Yield: 12.0 g, 94%; 1H NMR (400 MHz, CDCI3) oe 7.2-:,1 1 (m, 3K), 3.90 (d, J= 7.1 Hz, 2H), 1.32-1.29 (m, 1H), 0.76-0.63 (in, 2H), 0.45-0.32 (m, 2H).

The synthetic route of 7051-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; CV6 THERAPEUTICS (NI) LIMITED; SPYVEE, Mark; SHIRUDE, Pravin S.; (157 pag.)WO2017/6283; (2017); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of 7051-34-5,Some common heterocyclic compound, 7051-34-5, name is (Bromomethyl)cyclopropane, molecular formula is C4H7Br, 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.

To a solution of methyl 3-hydroxy-4-methoxybenzoate (5 g, 27.47 mmol) in DMF (30 mL) were added anhydrous potassium carbonate (7.58 g, 54.95 mmol) and (bromomethyl) cyclopropane (3.8 mL, 41.20 mmol) in turn. The mixture was stirrred in a sealing tube at 60 for 4.5 h. The reaction mixture was diluted with saturated aqueous NaCl solution (20 mL) . The resulting mixture was extracted with EtOAc (25 mL × 3) . The combined organic layers were washed with water (30 mL × 3) , dried over anhydrous Na2SO4 for 1 h and concentrated to give the title compound as a white solid (6.26 g, 96.5) 1H NMR (400 MHz, CDCl3) : delta ppm 7.66 (d, J 8.4 Hz, 1H) , 7.52 (s, 1H) , 6.87 (d, J 8.4 Hz, 1H) , 3.92 (s, 3H) , 3.89 (d, J 7.0 Hz, 2H) , 3.87 (s, 3H) , 1.32-1.36 (m, 1H) , 0.62-0.67 (m, 2H) , 0.34-0.38 (m, 2H) and MS-ESI: m/z 237.1 [M+H] +.

The synthetic route of 7051-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, Yingjun; LIU, Bing; YU, Tianzhu; ZHANG, Xiangyu; ZHANG, Shiguo; ZHANG, Jiancun; CHENG, Changchung; (426 pag.)WO2016/34134; (2016); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Reference of 7051-34-5, A common heterocyclic compound, 7051-34-5, name is (Bromomethyl)cyclopropane, molecular formula is C4H7Br, 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.

N-N(Bromomethyl)cyclopropane (0.95 mg, 6.70 mmol, 0.70 mL, 95 %) was added to a mixture of4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)-1 H-pyrazole (1 .00 g, 5.15 mmol) and caesium carbonate (3.49 mg, 10.72 mmol) in dry N,N-dimethylformamide (20 mL) at 0O. After stirring for 30 mm the ice-water bath was removed. The reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate (150 mL) and washed with brine (3×100 mL). The organic layer was dried with sodium sulfate and concentrated in vacuo to afforded 1.30 g (4.38 mmol, 85% of theory) of the title compound. GO-MS (Method L9): R1 = 4.35 mm; mlz = 247 M1 H NMR (300 MHz, Ohloroform-d, Method M2) 6 7.81 (s, 1 H), 7.79 (s, 1 H), 3.99 (d, J = 7.1 Hz,2H), 1.32 (s, 12H), 1.27 (m, 1 H), 0.71 – 0.58 (m, 2H), 0.41 – 0.33 (m, 2H).

The synthetic route of 7051-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BAYER ANIMAL HEALTH GMBH; KOeHLER, Adeline; WELZ, Claudia; BOeRNGEN, Kirsten; KULKE, Daniel; ILG, Thomas; KOeBBERLING, Johannes; HUeBSCH, Walter; SCHWARZ, Hans-Georg; GOeRGENS, Ulrich; EBBINGHAUS-KINTSCHER, Ulrich; HINK, Maike; NENNSTIEL, Dirk; RAMING, Klaus; ADAMCZEWSKI, Martin; BOeHM, Claudia; (269 pag.)WO2017/178416; (2017); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 7051-34-5,Some common heterocyclic compound, 7051-34-5, name is (Bromomethyl)cyclopropane, molecular formula is C4H7Br, 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.

4-Hydroxybenzaldehyde (3.00 g, 0.0246 mol), bromomethylcyclopropane (3.58 ml, 0.0369 mol) and K2CO3 (6.8 g, 0.050 mol) were taken in acetone (80 ml) and refluxed for 24 h. The reaction mixture was cooled to room temperature, the insolubles filtered through Celite and the solvent was evaporated to obtain a crude residue. Purification of the residue by column chromatography (silica gel 60-120 mesh, EtOAc:Hexane 0.5:9.5) afforded 3.6 g (83.14%) of 4-cyclopropylmethoxybenzaldehyde. LCMS [M+H]+ 177.0 IH-NMR (CDCl3): 9.877 (s, IH), 7.813-7.833 (d, 2H, J=8 Hz), 6.984-7.004 (d, 2H, J=8 Hz), 3.882-3.899 (d, 2H, J= 6.8 Hz), 1.259-1.295 (m, IH), 0.669-.687 (m, 2H), 0.383 (bs, 2H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route (Bromomethyl)cyclopropane, its application will become more common.

Reference:
Patent; FOREST LABORATORIES HOLDINGS LIMITED; SARMA, Pakala, Kumara Savithru; ACHARYA, Vinod, Parameshwaran; KASIBHATLA, Srinivas, Rao; VISWANADHAN, Vellarkad, Narayana; SHEKHAR, Polisetti; BISCHOFF, Alexander; WO2010/127212; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

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. 7051-34-5, name is (Bromomethyl)cyclopropane, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: (Bromomethyl)cyclopropane

Preparation 4 2-Cvclopropylmethyl-ri,3″|dithiane-2-carboxylic acid ethyl esterTo a flamed dried flask is added dry toluene (80 mL) and sodium hydride (60%, 33.5 mmol, 1.34 g). The reaction is cooled in a ice bath and a solution of ethyl 1,3 dithiane carboxylate (52 mmol, 10 g) and bromomethyl cyclopropane (62.4 mmol, 8.42 g) in DMF (24 mL) are added dropwise over 10 min. The ice bath is removed and the reaction is stirred for 18 h. Water is added (50 mL) and the organic layer is separated. The organic layer is washed with brine, dried (Na2SO4), and concentrated to a yellow oil (12 g, 92 %). LC-MS: 247.0 (M+l).

According to the analysis of related databases, 7051-34-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ELI LILLY AND COMPANY; WO2007/140183; (2007); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

7051-34-5, name is (Bromomethyl)cyclopropane, belongs to bromides-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. Product Details of 7051-34-5

Step 1: Synthesis of 4-(benzyloxy)-3-(cyclopropylmethoxy)benzaldehyde (119) 4-(benzyloxy)-3-hydroxybenzaldehyde (640 mg, 2.8 mmol) was dissolved in DMF (5 ml), then K2CO3 (774 mg, 5.6 mmol) and (bromomethyl)cyclopropane (544 mul, 5.6 mmol) were added, and the mixture was stirred at 90 C. for 2 hours. The reaction was diluted with Et2O and the organic phase was washed with NaHCO3 sat sol, water and brine, dried over Na2SO4 and evaporated under vacuum to give 750 mg of the desired product (yield 95%).

The synthetic route of 7051-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; CHIESI FARMACEUTICI S.p.A.; ARMANI, Elisabetta; Amari, Gabriele; Esposito, Oriana; Carzaniga, Laura; Capaldi, Carmelida; US2014/155391; (2014); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

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. 7051-34-5, name is (Bromomethyl)cyclopropane belongs to bromides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C4H7Br

a) 3-cyclopropylmethoxy-4-difluoromethoxy-benzaldehyde 4.70 g (24.98 mmol) 4-difluoromethoxy-3-hydroxybenzaldehyde are placed in 50 ml of dimethylformamide, 4.00 g (29.63 mmol) bromomethylcyclopropane and 3.50 g (25.32 mmol) potassium carbonate are added. The reaction mixture is heated to 100 C. for 20 hours, then the dimethylformamide is concentrated by evaporation. The residue is extracted with ethyl acetate and water, the organic phase is dried and evaporated to dryness. Yield: 5.83 g (96% of theoretical)

The synthetic route of 7051-34-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Boehringer Ingelheim International GmbH; US2006/116373; (2006); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Adding a certain compound to certain chemical reactions, such as: 7051-34-5, name is (Bromomethyl)cyclopropane, belongs to bromides-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 7051-34-5, HPLC of Formula: C4H7Br

Cyclopropyl methyl bromide (1.4 ml, 14.46 mmol), sodium iodide (0.986 g, 6.6 mmol) and potassium carbonate (3.64 g, 26.3 mmol) were added sequentially to a stirred solution of 4-hydroxybenzoic acid methyl ester (2.0 g, 13.14 mmol), in 25 ml of acetone at room temperature and the mixture was refluxed for 44 h. The solvent was evaporated to obtain a residue to which 10% NaOH (80 ml) was added. The solution was extracted with DCM twice. The combined DCM layers were washed with water and brine and dried over anhydrous Na2SO^ The solvent was evaporated to obtain 2.5 g (92.25%) of 4- cyclopropylmethoxybenzoic acid methyl ester. LCMS: [M+H]+ 270.3; IH-NMR (CDCl3): 7.964-7.986 (d, 2H, J=8.8 Hz), 6.895-6.917 (d, 2H, J=8.8 Hz), 3.879 (s, 3H), 3.849-3.867 (d, 2H, J=7.2 Hz), 1.262-1.281 (m, IH), 0.639-0.671 (m, 2H), 0.360-0.372 (m, 2H).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Patent; FOREST LABORATORIES HOLDINGS LIMITED; SARMA, Pakala, Kumara Savithru; ACHARYA, Vinod, Parameshwaran; KASIBHATLA, Srinivas, Rao; VISWANADHAN, Vellarkad, Narayana; SHEKHAR, Polisetti; BISCHOFF, Alexander; WO2010/127212; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 7051-34-5, 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. 7051-34-5 name is (Bromomethyl)cyclopropane, 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.

Reference Example 1-19; 2-(cyclopropylmethyO-l,3-dithiane-2-carboxylic acid ethyl esterSodium hydride (1.03 g) was suspended in toluene (40.0 mL), followed by adding a solution of ethyl l,3-dithiane-2-carboxylate (4.13 g) and (bromomethyl)cyclopropane (2.52 mL) in dimethylformamide (10 mL) to the suspension at 00C and stirring the mixture overnight at room temperature. A saturated aqueous ammonium chloride solution was added to the reaction solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with a saturated saline solution and then dried over anhydrous sodium sulfate. Insoluble matters were filtered out, and the filtrate was concentrated under reduced pressure to give the title compound (5.20 g) as a colorless oil. mass:247(M+l)+ .

At the same time, in my other blogs, there are other synthetic methods of this type of compound, (Bromomethyl)cyclopropane, and friends who are interested can also refer to it.

Reference:
Patent; BANYU PHARMACEUTICAL CO.,LTD.; KAMEDA, Minoru; KOBAYASHI, Kensuke; NAKAMA, Chisato; ANDO, Makoto; SATO, Nagaaki; WO2010/126163; (2010); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

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. 7051-34-5, name is (Bromomethyl)cyclopropane, This compound has unique chemical properties. The synthetic route is as follows., Quality Control of (Bromomethyl)cyclopropane

THF (200 mL) was added to the reaction flask, Potassium carbonate (11.0 g, 0.08 mol) and 3-hydroxy-4-difluoromethoxybenzaldehyde (10.0 g, 0.053 mol) were added and the mixture was stirred at room temperature for 1 hour. Then, methyl bromocyclopropane (10.8 g, 0.80 mol) was added and TLC Hydroxy-4-difluoromethoxybenzaldehyde was dissolved and the reaction was quenched by addition of water (100 mL) and extracted with dichloromethane. The organic phase was washed with saturated brine, dried over anhydrous sodium sulfate and concentrated to give a brown oil 3-cyclopropylmethoxy-4-difluoromethoxybenzaldehyde (10.5 g, yield 82%, purity 93.9%, HPLC chromatogram shown in Figure 3), without purification can be directly used in the next step reaction

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 7051-34-5.

Reference:
Patent; Taicang Enkang Pharmaceutical Technology Co., Ltd.; Wang Xiang; Shang Muhong; Wang Li; Zhang Feng; Yu Su; Gong Yadong; (12 pag.)CN106883118; (2017); A;,
Bromide – Wikipedia,
bromide – Wiktionary