Category: 126-38-5

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, A new synthetic method of this compound is introduced below., Computed Properties of C5H11BrO2

To a suspension of 5-bromo-3-methylpyrazin-2-amine (4.63g, 24.6 mmol) in iPrOH (30 ml) was added l-bromo-2,2-dimethoxypropane (3.66 ml, 27.1 mmol), pyridinium para-toluene sulfonic acid (0.62g, 2.5 mmol) and the mixture heated to 65C in a sealed tube for 36h. The reaction was diluted with DCM, washed with saturated sodium hydrogen carbonate solution, dried (Na2S04) and concentrated. Purification by flash column chromatography on silica gel (EtOAc: Hept 1:4-1: 1) afforded the titled product as a light yellow crystalline solid (3.96 g, 71%). MS (m/e): 226.1 (M+H+, Br)

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; GREEN, Luke; PINARD, Emmanuel; RATNI, Hasane; WILLIAMSON, Patrick; (95 pag.)WO2015/197503; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, A new synthetic method of this compound is introduced below., Recommanded Product: 1-Bromo-2,2-dimethoxypropane

Step B: To a suspension of 5-chloro-3-(trifluoromethyl)pyrazin-2-amine (0.77 g, 3.8 mmol) in iPrOH (6 ml) was added l-bromo-2,2-dimethoxypropane (0.57 ml, 4.2 mmol), pyridinium para-toluene sulfonic acid (0.1 g, 0.4 mmol) and the mixture heated to 100C in a sealed tube for 96h. The reaction was diluted with DCM, washed with saturated sodium hydrogen carbonate solution, dried (Na2S04) and concentrated. Purification by flash column chromatography on silica gel (EtOAc: Hept 3:7-1:0) afforded the titled product as a brown powder (0.15 g, 17%). MS (m/e): 236.1. (M+H+, CI)

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; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; GREEN, Luke; PINARD, Emmanuel; RATNI, Hasane; WILLIAMSON, Patrick; (95 pag.)WO2015/197503; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Adding a certain compound to certain chemical reactions, such as: 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, belongs to ethers-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 126-38-5, Recommanded Product: 1-Bromo-2,2-dimethoxypropane

A mixture of (R)-tert-butyl 3-((R)-(3-chlorophenyl)(hydroxy)methyl)piperidine- 1-carboxylate (0.2234 g, 0.68 mmol), 60% NaH (1.460 g, 36.5 mmol), and 1-bromo- 2,2-dimethoxypropane (7.760 g, 42.4 mmol) in THF (20 mL) was heated at 80 C for 3 d and then cooled to rt. The reaction mixture was then quenched with water, extracted with ethyl acetate (3x), and dried over Na2SO4. After the solvent was evaporated under reduced pressure, the crude product (R)-tert-buty 3-((R)-(3-chlorophenyl)(2,2- dimethoxypropoxy)methyl)piperidine-1-carboxylate was directly used in the next step without further purification.

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Reference:
Patent; VITAE PHARMACEUTICALS, INC.; WO2007/70201; (2007); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, A new synthetic method of this compound is introduced below., name: 1-Bromo-2,2-dimethoxypropane

The thioamide from above (0.36 g, 1.63 mmol, 1.0 eq) was suspended in EtOH (10 mL, absolute) under argon at rt. 1-Bromo-2,2-dimethoxypropane (0.22 mL, 1.63 mmol, 1.0 eq) was added via syringe and stirring continued for 72 h at rt. The mixture was then heated to 70 C. for 16 h and concentrated in vacuo. Mass spectrometric analysis of the crude residue was consistent with a corresponding thiazole structure, and no further manipulation was performed before removal of the Boc protecting group in the next step. ESI-MS (m/z) 257 [M+H]+, 201 [M-tBu]+, 157 [M-Boc]+.

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Erickson, Shawn David; Baldwin, John J.; Dolle III, Roland Ellwood; Inglese, James; Ohlmeyer, Michael H.J.; Ho, Koc-Kan; Bohnstedt, Adolph C.; Kultgen, Steven G.; Conti, Paolo Giovanni Martino; Leysen, Dirk; van der Louw, Jaap; US2004/87601; (2004); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, This compound has unique chemical properties. The synthetic route is as follows., Application In Synthesis of 1-Bromo-2,2-dimethoxypropane

Pentafluorophenoxyacetone, 39 Pentafluorophenol (1 g, 5.5 mmol), 1-bromo-2,2-dimethoxypropane (1 g, 5.5 mmol) and tetrabutylammoniun hydrogen sulfate (1.86 g, 5.5 mmol) phase transfer catalyst were dissolved in CH2 Cl2 (30 ml). KOH (2.8 g, 50 mmol) dissolved in H2 O (30 ml) was added. The reaction mixture was stirred at room temperature for two days. The organic layer was washed with 10% HCl (during this procedure the acetal was hydrolyzed to the product ketone), 10% NaHCO3 and H2 O. The product was separated from unreacted starting material by flash chromatography on silica gel (ethyl acetate/hexane 25/75), yielding 0.16 g. (12%) of a colorless liquid. 1 H NMR (CDCl3): delta2.32 (s, 3H, methyl group) 4.78 (s, 2H, methylene group).

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 126-38-5.

Reference:
Patent; Northeastern University; US5360819; (1994); A;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Electric Literature of 126-38-5,Some common heterocyclic compound, 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, molecular formula is C5H11BrO2, 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.

EXAMPLE 10 Synthesis of 8-(4-chloro-3-ethoxycarbonylphenyl)-7,8-dihydro-2-methyl-5-trifluoromethylimidazo[1,2-a]pyrimidin-7-one (The compound No.13) STR14 A mixture of 2-amino-3-(4-chloro-3-ethoxycarbonylphenyl)-3,4-dihydro-6-trifluoromethylpyrimidin-4-one (0.5 g), bromoacetone dimethyl acetal (0.6 g) and DMF (10 ml) was heated for 5 hours at 130 C. with stirring. The solvent was distilled off under reduced pressure. The residue was added with water and extracted with ethyl acetate. The extract layer was washed with water and dried on anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure and the residue was purified by a preparative thin-layer plate of alumina (developing solvent: ethyl acetate/hexane=3/7) to give the compound of interest (0.11 g). 1 H-NMR (ppm) 1.38(t, J=7 Hz, 3H), 2.22(s, 3H), 4.39(q, J=7 Hz, 2H), 6.62(s, 1H), 7.00(s, 1H), 7.48(dd, J=8, 3 Hz, 1H), 7.64(dd, J=8, 0.5 Hz, 1H), 7.95-7.96(m, 1H) [CDCl3 ].

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nissan Chemical Industries, Ltd.; US6165942; (2000); A;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, A new synthetic method of this compound is introduced below., Application In Synthesis of 1-Bromo-2,2-dimethoxypropane

To a suspension of 5-bromo-3-methylpyrazin-2-amine (4.63g, 24.6 mmol) in iPrOH (30 ml) was added l-bromo-2,2-dimethoxypropane (3.66 ml, 27.1 mmol), pyridinium para-toluene sulfonic acid (0.62g, 2.5 mmol) and the mixture heated to 65C in a sealed tube for 36h. The reaction was diluted with DCM, washed with saturated sodium hydrogen carbonate solution, dried (Na2S04) and concentrated. Purification by flash column chromatography on silica gel (EtOAc: Hept 1:4-1: 1) afforded the titled product as a light yellow crystalline solid (3.96 g, 71%). MS (m/e): 226.1 (M+H+, Br)

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; GREEN, Luke; PINARD, Emmanuel; RATNI, Hasane; WILLIAMSON, Patrick; (95 pag.)WO2015/197503; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Related Products of 126-38-5,Some common heterocyclic compound, 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, molecular formula is C5H11BrO2, 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.

EXAMPLE 213 1-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-2-propanone hydrochloride A mixture of 4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidine (7.45 g, 33.4 mmol), K2 CO3 (5.5 g) and bromo-2,2-dimethoxypropane (6.84 g, 37.6 mmol) in acetonitrile (200 ml) was heated and stirred at reflux for 4 hours. An additional charge of bromo-2,2-dimethoxypropane (5.1 g, 28 mmol) was added and the mixture was refluxed overnight. After being cooled to room temperature, the mixture was filtered, and the solvent was removed on a rotary evaporator. The residue was purified by flash chromatography over a silica gel column (SiO2, 100 g; eluted with dichloromethane, DCM, and 1% CH3 OH in DCM). The oil product thus obtained weighed 2.2 g (24%). The oil product was dissolved into ethanol (10 ml) then was treated with HCl in ether solution (1M, 9 ml) at room temperature. The crystals were collected, 2.08 g, m.p.=220-223 C. dec. Analysis: Calculated for C15 H17 FN2 O2.HCl: 57.60% C 5.80% H 8.96% N Found: 57.49% C 5.97% H 8.67% N

The synthetic route of 126-38-5 has been constantly updated, and we look forward to future research findings.

Synthetic Route of 126-38-5,Some common heterocyclic compound, 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, molecular formula is C5H11BrO2, 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.

The compound 4,6-dimethoxypyrimidine-5-carboxamide (500 mg, 2.73 mmol) was suspended in1-bromo-2,2-dimethoxypropane (5 mL),The mixture was heated to 130 C and stirred for 1.5 hours. The reaction was monitored by thin-layer chromatography (PE / EtOAc, v / v, 2/1). After the reaction was completed, the reaction mixture was diluted with ethyl acetate (30 mL). The resulting mixture was washed with water (30 mL) and brine (30 mL), and the organic phase was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (PE / EtOAc (v / v) = 8/1) to give the title compound as a white solid (229 mg, 37.9%).

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-2,2-dimethoxypropane, its application will become more common.

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. 126-38-5, name is 1-Bromo-2,2-dimethoxypropane, This compound has unique chemical properties. The synthetic route is as follows., HPLC of Formula: C5H11BrO2

A suspension of 5-bromo-4-fluoropyridin-2-amine (1 g, 5.24 mmol) inisopropanol (10 mL) was treated with 1-bromo-2,2-dimethoxypropane (1.16 g, 6.28mmol). The resulting mixture was heated at 80C for 21 h, then cooled to room temperature and concentrated under vacuum at 40C. The residue was treated with ethyl acetate (15 mL) and water (15 mL) and the phases were separated. The aqueous phase was basified with aqueous NaOH solution (32% w/w) to pH 8, then extracted with ethylacetate (10 mL, then 15 mL). The organic phases were pooled and concentrated under vaccuum at 40C to give the title compound (0.93 g, 78%) as a beige solid.

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 126-38-5.

Reference:
Patent; UCB BIOPHARMA SPRL; ALEXANDER, Rikki Peter; BENTLEY, Jonathan Mark; BRACE, Gareth Neil; BROOKINGS, Daniel Christopher; CHOVATIA, Praful Tulshi; DEBOVES, Herve Jean Claude; JOHNSTONE, Craig; JONES, Elizabeth Pearl; KROEPLIEN, Boris; LECOMTE, Fabien Claude; MADDEN, James; MILLER, Craig Adrian; PORTER, John Robert; SELBY, Matthew Duncan; SHAW, Michael Alan; VAIDYA, Darshan Gunvant; YULE, Ian Andrew; WO2015/86506; (2015); A1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem