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. 14869-41-1, name is 2-(2-Chloroethoxy)acetic acid, A new synthetic method of this compound is introduced below., SDS of cas: 14869-41-1

A mixture of 2-(2-chloroethoxy)acetic acid (48 mg,0.34 mmol), compound 23 (200 mg, 0.34 mmol) and N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline(100 mg, 0.41 mmol) in THF (4 mL) was stirred at 60 C for 4 h when TLC analysis indicated completionof reaction. The reaction mixture was concentrated in vacuum and THF (5 mL) was added to theresidue. To the stirred mixture was added NaH (40 mg, 1 mmol) in portions at room temperature. Afteraddition, the mixture was stirred at room temperature for 5 h and TLC showed reaction was complete.Then NH4Cl solution (0.2 mL, concentrated solution) was added and the mixture was concentrated invacuum.The residue was recrystallized fromn-hexane and ethyl acetate to give 24zc as a brown solid(174 mg, 76.0% yield). 1H-NMR: 11.84 (s, 1H), 10.45-10.39 (m, 1H), 8.47 (s, 3H), 8.02 (s, 2H), 7.41-7.39(m, 3H), 7.28-7.26 (m, 3H), 7.23-7.19 (m, 2H), 4.90 (m, 1H), 4.34-4.28 (qd, J = 7.2 Hz, 2H), 3.92-3.89(m, 2H), 3.68-3.59 (m, 2H), 3.40-3.38 (m, 2H), 3.17-3.07 (m, 2H), 1.33-1.30 (t, J = 7.2 Hz, 3H). ESI-MS(m/z) = 695.17 [M + Na]+

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; Wei, Qunchao; Zheng, Zhichao; Zhang, Shijun; Zheng, Xuemin; Meng, Fancui; Yuan, Jing; Xu, Yongnan; Huang, Changjiang; Molecules; vol. 23; 8; (2018);,
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Related Products of 41365-75-7, A common heterocyclic compound, 41365-75-7, name is 1-Amino-3,3-diethoxypropane, molecular formula is C7H17NO2, 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.

Step 1: tert-Butyl (3,3-diethoxypropyl)carbamate A solution of di-tert-butyl dicarbonate (6.74 g, 31.0 mmol) in DCM (50 mL) was added to a solution of 1-amino-3,3-diethoxypropane (5.0 g, 34.0 mmol) in DCM (50 mL). The reaction mixture was stirred at room temperature for 2 hours. The reaction mixture was washed with 10% aqueous potassium hydrogen sulfate and the organic phase dried (magnesium sulfate), filtered and the solvent evaporated at reduced pressure to afford the title product (8.13 g, 100%). 1H NMR (400 MHz, CDCl3): delta 5.00 (s, 1H), 4.56-4.53 (m, 1H); 3.69-3.62 (m, 2H); 3.54-3.46 (m, 2H); 3.24-3.20 (m, 2H); 1.84-1.80 (m, 2H); 1.49 (s, 9H); 1.23-1.19 (m, 6H).

The synthetic route of 41365-75-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Chiesi Farmaceutici S.p.A.; RANCATI, Fabio; Linney, Ian; Knight, Chris; Schmidt, Wolfgang; US2014/163066; (2014); A1;,
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Synthetic Route of 10103-06-7, A common heterocyclic compound, 10103-06-7, name is 2,3-Dimethoxynaphthalene, molecular formula is C12H12O2, 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.

(a) 1-(6,7-Dimethoxy-naphthalen-2-yl)-2-methyl-propan-1-one The solution of 2,3-dimethoxynaphthalene (16.5 g), isobutyroylchloride (12.5 g) and aluminum chloride (15.7 g) in methylene chloride (200 ml) was stirred at ambient temperature overnight. The solution was then washed with saturated sodium bicarbonate and water, dried with sodium sulfate and evaporated. Finally the crude product was triturated with ether. Yield: 13.5 g, melting point 103-105 C. 1H-NMR (DMSO-d6): 8.51 (s,1H), 7.83 (s,2H), 7.53 (s,1H), 7.39 (s,1H), (s,3H), 3.91 (s,3H), 3.76-3.80 (m,1H), 1.16 (d,6H, J=8 Hz).

The synthetic route of 10103-06-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Baeckstroem, Reijo; Pystynen, Jarmo; Lotta, Timo; Ovaska, Martti; Taskinen, Jyrki; US2004/34011; (2004); A1;,
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In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 38336-04-8 as follows. Recommanded Product: 2-(Benzyloxy)-1-ethanamine

(1) Take 10g of bromonitrobenzene dissolved inIn 50 ml acetonitrile,6.5 g 2-benzyloxyethylamine was added to the above solution under ice bath.Then add 20 ml of triethylamine,Reaction at room temperature for 6 hours,A yellow clear solution is obtained,The reaction solution was concentrated under reduced pressure,Dissolved in 200 ml of dichloromethaneWash 50 ml of water three timesCombine the organic phase,Dry with anhydrous sodium sulfateAfter filtration, spin dry to obtain a crude product.After purifying crude product column chromatography, it will be 10.8Compound II,Yield 91.7%.

According to the analysis of related databases, 38336-04-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Tierxi (Nanjing) Pharmaceutical Research And Development Co., Ltd.; Li Yantao; Mao Yu; Zhang Chi; Liu Chun; Cui Xilin; (13 pag.)CN107586291; (2018); A;,
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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. 7252-83-7, name is 2-Bromo-1,1-dimethoxyethane belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Quality Control of 2-Bromo-1,1-dimethoxyethane

As described by Doel et al.,13 a solution of adenine or thymine (1 equiv) and K2CO3 (1 equiv) in DMF (10 mL) was stirred at 100 C in the presence of 2-bromo-1,1-dimethoxyethane (1.1 equiv). After 24 h, the reaction was filtered and the solvent removed under reduced pressure. The crude mixture was purified by column chromatography in silica gel with MeOH: CH2Cl2 or EtOAc: hexane as mobile phase. Corresponding 9-(2,2-dimethoxyethyl)-adenine and 1-(2,2-dimethoxyethyl)-thymine were obtained in 61% and 38% isolated yields respectively. Both acetals were completely hydrolyzed after 1 h stirring in HCl 1 N at 90 C, to yield the corresponding aldehydes.20

The synthetic route of 7252-83-7 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Palazzolo, Martin A.; Perez-Sanchez, Maria; Dominguez De Maria, Pablo; Iribarren, Adolfo M.; Lewkowicz, Elizabeth S.; Tetrahedron Letters; vol. 53; 50; (2012); p. 6797 – 6800,4;,
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In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 111-95-5 as follows. category: ethers-buliding-blocks

To a 0 C solution of compound 1(300 mg, 0.73 mmol), HATLI (698 mg,1.84 mmol), HOBt (205 rng, 1.84 rnmol) and DIPEA (379 mg, 2.79 mmol) in 3 rnLof DMF was added compound 2 (139 mg, 1.35mmol), The mixture was stirred at the room temperature for I h. Then the resulting solution was diluted with water (15 rnL and ethyl acetate (15 rnL. The layers were separated and the aqueous phase was extracted with ethyl acetate (15 rnL x 2). The combined organic layers weredried over anhydrous Na2SO4, concentrated and the residue was purified by flash column on silica gel eluted with petroleum ether and EtOAc to give the compound 3 (170 mg, 35%) as yellow solid. LCMS (M+H) m/z: cacld 638.8, found 638.9.

According to the analysis of related databases, 111-95-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; CLEAVE BIOSCIENCES, INC.; ZHOU, Han-Jie; WUSTROW, David; WO2014/66506; (2014); A2;,
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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. 93919-56-3, name is (4-(Trifluoromethoxy)phenyl)methanamine, A new synthetic method of this compound is introduced below., Computed Properties of C8H8F3NO

Step 2 Nitro-4-(4-trifluoromethoxy-benzylamino)-benzoic acid allyl ester; 5.0 g of 4-fluoro-3-nitro-benzoic acid allyl ester (22 mmol) were dissolved in 100 ml ethanol. 4.25 g of 4-(trifluoromethoxy)-benzylamine (22 mmol) were added and stirred at room temperature for 1 h. The product was extracted from methylenchloride/water and dried over sodium sulfate. The crude product was crystallized from isopropyl ether to result in yellow crystals (7.5 g). MS(ISP): 397.2 (M+H)+.

The synthetic route of 93919-56-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Bleicher, Konrad; Heinrich Nettekoven, Matthias; Pflieger, Philippe; Roever, Stephan; US2006/89367; (2006); A1;,
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Related Products of 352-67-0,Some common heterocyclic compound, 352-67-0, name is 1-Fluoro-4-(trifluoromethoxy)benzene, molecular formula is C7H4F4O, 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.

Step 5: 7-bromo-3-[4-(trifluoromethoxy)phenyl]benzo[e]benzimidazole A stirred solution of the product of step 4 (15 g, 0.06 mol) and 1 -fluoro-4- (trifluoromethoxy)benzene (21 g, 0.12 mol) and Cs2C03 (50 g, 0.15 mol) in DMF (250 mL) was heated to 160C for 16h. The reaction mixture was diluted with water and extracted with EtOAc. The organic layer was dried (MgS04) and concentrated to give 7- bromo-3-[4-(trifluoromethoxy)phenyl]benzo[e]benzimidazole 16 g (65% yield) which was used without further purification. LC/MS (method 1 ): Rt = 1.304 min; MS: m / z = 406.7 (M+).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Fluoro-4-(trifluoromethoxy)benzene, its application will become more common.

Reference:
Patent; BASF SE; NARINE, Arun; BANDUR, Nina Gertrud; DICKHAUT, Joachim; KOLLER, Raffael; VON DEYN, Wolfgang; WACH, Jean-Yves; SALGADO, Vincent; WO2015/7682; (2015); A1;,
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Adding a certain compound to certain chemical reactions, such as: 707-07-3, name is (Trimethoxymethyl)benzene, 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 707-07-3, Recommanded Product: (Trimethoxymethyl)benzene

General procedure: To a stirred solution of the respective N-carbamate-protected aminovicinal diol 4 (0.50 mmol, 1 equiv) in CH2Cl2 (10 mL, 0.05 M) were added BF3·OEt2 (50 muL, 0.050 mmol, 0.1 equiv, 1.0 M solution in CH2Cl2) and trimethyl orthobenzoate (0.13 mL, 0.75 mmol, 1.5 equiv) at r.t. The resulting mixture was refluxed or stirred at r.t. under N2 until TLC showed complete conversion of the substrate. The reaction was quenched with sat. aq NaHCO3 and extracted with EtOAc (2 ×). The combined organic layers were washed with brine, dried (MgSO4), filtered, and concentrated in vacuo. The residue was purified by flash chromatography on silica gel (hexane/EtOAc) to give the desired product 5.

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, (Trimethoxymethyl)benzene, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Park, Heemin; Kwon, Yongseok; Shin, Jae Eui; Kim, Woo-Jung; Hwang, Soonho; Lee, Seokwoo; Kim, Sanghee; Synthesis; vol. 49; 12; (2017); p. 2761 – 2767;,
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Synthetic Route of 437-83-2, A common heterocyclic compound, 437-83-2, name is 3-Fluoro-2-methoxyaniline, molecular formula is C7H8FNO, 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.

Step 1[00180j To a stirred solution of Intermediate 1(0.33 g, 1.61 mmol) in DMA (3 mL) was added 3-fluoro-2-methoxyaniline (0.27 g, 1.9 mmol) followed by NaHMDS (1M in THF, 4.83mL, 4.83 mmol). The reaction was stirred for 30 minutes and then water (30 mL) was gradually added resulting in the product crashing out as a precipitate. The product was collected by filtration, washed with additional water and then dried undervacuum providing Intermediate 15 (476 mg, 95% yield). LC retention time 3.22 mm [A]. MS(Ej m/z: 310 (MHj.

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; BRISTOL-MYERS SQUIBB COMPANY; MOSLIN, Ryan M.; LIN, Shuqun; WEINSTEIN, David S.; WROBLESKI, Stephen T.; ZHANG, Yanlei; TOKARSKI, John S.; WO2014/74660; (2014); A1;,
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