Amides-buliding-blocks

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. 60144-53-8, name is tert-Butyl (4-fluorophenyl)carbamate, A new synthetic method of this compound is introduced below., Computed Properties of C11H14FNO2

To a solution of 4-fluorophenylcarbamic acid terf-butyl ester (1.02 g, 4.6 mmol) in tetrahydrofuran (15 mL) was added sodium hydride (60% dispersion in mineral oil, 206 mg, 5.1 mmol). After the initial gas evolution had ceased, the reaction was allowed to stir for 15 minutes. Tetra-n-butylammonium iodide (189 mg, 0.5 mmol) was then added followed by the addition of 1-(4-chloromethyl-thiazol-2-yl)-piperidine (1.1 g, 5.1 mmol) prepared above. The mixture was heated to reflux for 1 hour. After cooling, the reaction was carefully neutralized with cold saturated sodium bicarbonate (10 ml_) and extracted with ethyl acetate (2 x 20 mL). The organic layers were combined, dried over anhydrous sodium sulfate, filtered and the solvent removed under reduced pressure to provide an oil. Flash chromatography (silica gel; 10% ethyl acetate in hexanes) provided (4-fluorophenyl)-(2-piperidin-1-yl-thiazol-4- ylmethyl)-carbamic acid te/t-butyl ester (1.25 g, 3.2 mmol) as a white solid.

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; WYETH; WO2008/73461; (2008); A2;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Related Products of 112253-70-0,Some common heterocyclic compound, 112253-70-0, name is 2-Amino-4-bromobenzamide, molecular formula is C7H7BrN2O, 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.

Oxalyl chloride (2.9 mL, 33 mmol) was added drop wise to the mixture of compound PR-1 (5 g, 22 mmol), 2-amino-4-bromobenzamide (4.7 g, 22 mmol) and pyridine (50 mL). The mixture was stirred for 1 hour at room temperature. The solvent was removed in vacuo. The obtained residue was purified by chromatography (petroleum ether: acetate ether=5: l) resulting in a intermediate (3.6 g). Method A2; Rt: 1.15 min. m/z=:447.7 (M+Na)+ Exact mass: 425.1 The above obtained intermediate (3.6 g,), Na2C03 (2.7 g. 25.4 mmol), H20 (20 mL) and CH3CH2OH (20 mL) were stirred for 2 hours under reflux. Most of CH3CH2OH was removed in vacuo. The residue was extracted with ethyl acetate (3 x 20 mL). The organic layer was dried over Na2S04 and concentrated in vacuo. The residue was washed with t-butyl methyl ether resulting in compound QA-6 (3.4 g)

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Amino-4-bromobenzamide, its application will become more common.

Reference:
Patent; JANSSEN R&D IRELAND; VANDYCK, Koen; VERSCHUEREN, Wim, Gaston; RABOISSON, Pierre, Jean-Marie, Bernard; WO2013/98313; (2013); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

35303-76-5, name is 4-(2-Aminoethyl)benzenesulfonamide, belongs to amides-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. Quality Control of 4-(2-Aminoethyl)benzenesulfonamide

General procedure: To a cooled solution of triphosgene (1.41mmol) in THF at 0¡ãC, a mixture of primary amine (3.52mmol) and N,N-diisopropylethylamine (DIPEA, 7.04mmol) was added. The reaction mixture was stirred at the same temperature for 30min and then the other amine (3.52mmol) was added. The reaction mixture was slowly allowed to attain ambient temperature and further stirred for 8h. After the completion of the reaction, water was added to the reaction mixture and extracted using ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and evaporated under reduced pressure. The crude mixture was subjected to column chromatography to obtain the pure compounds.

The synthetic route of 35303-76-5 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Manickam, Manoj; Jalani, Hitesh B.; Pillaiyar, Thanigaimalai; Boggu, Pulla Reddy; Sharma, Niti; Venkateswararao, Eeda; Lee, You-Jung; Jeon, Eun-Seok; Son, Min-Jeong; Woo, Sun-Hee; Jung, Sang-Hun; European Journal of Medicinal Chemistry; vol. 143; (2018); p. 1869 – 1887;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Related Products of 683-57-8, These common heterocyclic compound, 683-57-8, name is 2-Bromoacetamide, 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.

The product of Example 3041 (0.048 g, 0.11 mmol) in N,N-dimethylformamide (2 ML) was reacted with cesium carbonate (0.15 g, 0.45 mmol), bromoacetamide (0.026 ML, 0.18 mmol), and a catalytic amount of tetrabutylammonium iodide at 25 C. for 3 hours.The reaction was concentrated under a stream of nitrogen stream of nitrogen warmed through a manifold heated to 165 C. and the resulting residue was triturated with water, filtered and dried.The resulting solid was triturated in hot ethyl acetate, filtered, and dried to give the title compound (0.020 g, 37%). MS (ESI-) m/z 482 (M-H)-. 1H NMR (300 MHz, DMSO-d6) delta ppm 1.59 (m, 2 H) 1.99 (m, 4 H) 3.60 (m, 1 H) 4.49 (s, 2 H) 6.08 (d, J=6.62 Hz, 1 H) 7.05 (t, J=7.17 Hz, 1 H) 7.20 (m, 3 H) 7.40 (s, 1 H) 7.50 (m, 1 H) 7.65 (m, 2 H) 8.05 (d, J=7.72 Hz, 1 H) 16.25 (s, 1 H).The sodium salt of the title compound was prepared according to the procedure of Example 1D. 1H NMR (300 MHz, DMSO-d6) delta ppm 1.59 (m, 1 H) 1.99 (m, 4 H) 3.61 (m, 2 H) 4.49 (s, 2 H) 6.08 (d, J=6.62 Hz, 1 H) 7.05 (m, 1 H) 7.21 (m, 2 H) 7.40 (s, 2 H) 7.50 (m, 1 H) 7.64 (m, 2 H) 8.06 (dd, J=7.91, 1.29 Hz, 1 H) 8.32 (s, 1 H).

Statistics shows that 2-Bromoacetamide is playing an increasingly important role. we look forward to future research findings about 683-57-8.

Reference:
Patent; Pratt, John K.; Betebenner, David A.; Donner, Pemela L.; Green, Brian E.; Kempf, Dale J.; McDaniel, Keith F.; Maring, Clarence J.; Stoll, Vincent S.; Zhang, Rong; US2004/87577; (2004); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

These common heterocyclic compound, 50667-69-1, name is 2,2,2-Trifluoro-N-(hydroxymethyl)acetamide, 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. Computed Properties of C3H4F3NO2

To a solution of 2-chloro-6-methylbenzoic acid (2.0 g, 11.72 mmol) in cone H2SO4 (4 mL) was added 2,2,2-trifluoro-N-(hydroxymethyl)acetamide (1.26 g, 8.80 mmol). The mixture was stirred at rt for 16 h. The reaction mixture was poured into ice-water and stirred for 2 h. The precipitate was collected by filtration and dried to afford 1.80 g of the title product and 6- chloro-2-methyl-3-((2,2,2-trifluoroacetamido)methyl)benzoic acid as mixture of products. A solution of 2-chloro-6-methyl-3-((2,2,2-trifluoroacetamido)methyl)benzoic acid (1.70 g, 5.75 mmol) in cone. HC1 (10 mL) and dioxane (2 mL) was heated at reflux for 12 h. The reaction mixture was concentrated and the concentrate was dissolved in THF (1 mL). The solution was treated with NaOH (690 mg, 17.25 mmol) in H20 (2 mL) at 0C followed by iert-butyl dicarbonate (2.51 g, 11.50 mmol). The reaction mixture was stirred rt for 16 h. The reaction mixture was acidified with IN HC1 and the pH was adjusted to 2-3. The reaction mixture was extracted with 5% MeOH in CHCl3. The organic layer was separated, dried, filtered and concentrated. The concentrate was dissolved in CH3CN (20 mL) and the solution was treated with K2CO3 (1.60 g, 11.50 mmol) and CH3I (11.50 mmol) at rt. Then the reaction mixture was heated at 50 C for 1-2 h before it was quenched with water and was extracted with EtOAc. The organic layer was washed with brine, separated, dried, filtered and concentrated. The concentrated was purified by column chromatography to provide 1.4 g of the title product and methyl 3-(((ierf-butoxycarbonyl)amino)methyl)-6-chloro-2- methylbenzoate as mixture of products.

The synthetic route of 2,2,2-Trifluoro-N-(hydroxymethyl)acetamide has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GLENMARK PHARMACEUTICALS S.A.; GHARAT, Laxmikant Atmaram; BANERJEE, Abhisek; PAWAR, Mahesh Yashwant; KHAIRATKAR-JOSHI, Neelima; KATTIGE, Vidya Ganapati; WO2013/38308; (2013); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Reference of 1129-26-6, A common heterocyclic compound, 1129-26-6, name is 4-Methoxybenzenesulfonamide, molecular formula is C7H9NO3S, 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.

(1) 0.0040g iridium catalyst [Cp * IrCl2] 2,0.0076 g silver salt bis(trifluoromethanesulfonyl)imide silver,0.825g oxidant silver acetate,31.4 muL acetophenone-O-methyl oxime and0.0748 g of p-methoxybenzenesulfonamide was placed in a reaction tube.Add 2mL of dichloromethane as a solvent,Heating and stirring reaction,The temperature of heating and stirring is 60C.Reaction time 24h.(2) After the reaction is over,Separation by column chromatography (300-400 column chromatography silica gel column packing,Eluent: ethyl acetate: petroleum ether = 12:100 v/v),Can get the productN-[2-(1-Methoxyimino)ethyl]phenyl-4-methoxybenzenesulfonamide.Yield 97%

The synthetic route of 1129-26-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; University of Jinan; Zhao Huaiqing; Zhang Wei; Xu Xiangwen; Wu Wei; (40 pag.)CN107739322; (2018); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Application of 113778-69-1, 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. 113778-69-1, name is N-Methoxy-N-methylisobutyramide belongs to amides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

n-Butyllithium (2.5 M in n-hexane, 22.0 mL, 44.4 mmol) was added dropwise to a – 80 C solution of 2-bromo-5-(trifluoromethyl)pyridine (5.0 g, 22.1 mmol) in THF (35 mL), and the resulting solution stirred for 10 minutes. N-methoxy-N-methylisobutyramide (3.49 g, 26.61 mmol) was added at -80 C, and the reaction mixture stirred for 1 h at -80 C. The reaction was then quenched by the addition of 40 mL of saturated aqueous ammonium chloride solution, and the mixture was allowed to warm to room temperature. The resulting solution was extracted with 3×40 mL of ethyl acetate, and the combined organic phases were washed with brine, dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was purified via column chromatography on silica gel (eluting with 1 :7 ethyl acetate/petroleum ether) to give 2-methyl-l-(5-(trifluoromethyl)pyridin-2-yl)propan-l-one (550 mg, 8% yield) as a yellow solid. MS (ESI, m/z): 218 [M+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, N-Methoxy-N-methylisobutyramide, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; FORMA THERAPEUTICS, INC.; ZHENG, Xiaozhang; MARTIN, Matthew W.; NG, Pui Yee; THOMASON, Jennifer R.; HAN, Bingsong; RUDNITSKAYA, Aleksandra; LANCIA, JR., David R.; (180 pag.)WO2019/204550; (2019); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Electric Literature of 956434-30-3, A common heterocyclic compound, 956434-30-3, name is tert-Butyl 8-chloro-2,3-dihydropyrido[3,2-f][1,4]oxazepine-4(5H)-carboxylate, molecular formula is C13H17ClN2O3, 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) To a solution of 1-cyclopentylethanol (0.22 mL) in toluene (4 mL) was added sodium hydride (0.14 g), and the resulting mixture was stirred at 100C for 15 min under a nitrogen atmosphere. A mixture of tert-butyl 8-chloro-2,3-dihydropyrido[3,2-f][1,4]oxazepine-4(5H)-carboxylate (0.50 g), BINAP (0.033 g), Pd2(dba)3 (0.024 g) and toluene (4 mL) was added, and the resulting mixture was stirred at 100C for 2 hr under an argon atmosphere. The reaction solution was poured into water, and the resulting product was extracted with ethyl acetate. The organic layer was washed with water and saturated brine and dried, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (solvent gradient; 0?40% ethyl acetate/hexane) to give tert-butyl 8-(l-cyclopentylethoxy)-2,3-dihydropyrido[3,2-f][1,4]oxazepine-4(5H)-carboxylate (0.45 g, 70%) as a white powder. 1H-NMR(CDCl3):delta1.27(3H,t,J=6.0Hz), 1.25-1.85(8H,m), 1.43(9H,s), 2.00-2.12(1H,m), 3.80-3.82(2H,m), 4.21(2H,brs), 4.33-4.45(2H,m), 5.01(1H,brs), 6.38(1H,d,J=8.1Hz), 7.30-7.50(1H,m)

The synthetic route of 956434-30-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Takeda Pharmaceutical Company Limited; EP2213675; (2010); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 598-55-0, 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. 598-55-0, name is Methyl carbamate, This compound has unique chemical properties. The synthetic route is as follows.

General procedure: To a well-ground mixture of beta-naphthol (0.288 g, 2 mmol), aldehyde (2 mmol) and amide derivatives (2.4 mmol) in a 10 mL round-bottomed flask connected to a reflux condenser, was added TrCl (0.055 g, 0.2 mmol), and the resulting mixture was stirred in an oil-bath (70 C) for the times reported in Table 2. Afterward, petroleum ether (20 mL) was added to the reaction mixture, refluxed, and stirred for 3 min, and filtered (TrCl is soluble in petroleum ether; however, the products are insoluble in this solvent). The filtrate containing the catalyst was washed two times with 20 mL of 40% (w/v) solution of NaHSO3 in H2O/EtOH (4:1) to extract the unreacted aldehyde dissolved in the petroleum ether. The organic layer was separated and dried with CaCl2; the solvent was evaporated to give pure recycled TrCl. The solid residue was recrystallized from EtOH (95%) to give the pure product (compounds 1a-m, 2a-d, and 3a-e).

The chemical industry reduces the impact on the environment during synthesis Methyl carbamate. I believe this compound will play a more active role in future production and life.

Reference:
Article; Khazaei, Ardeshir; Zolfigol, Mohammad Ali; Moosavi-Zare, Ahmad Reza; Abi, Fereshteh; Zare, Abdolkarim; Kaveh, Hamideh; Khakyzadeh, Vahid; Kazem-Rostami, Masoud; Parhami, Abolfath; Torabi-Monfared, Hossein; Tetrahedron; vol. 69; 1; (2013); p. 212 – 218;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Electric Literature of 6973-09-7, 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. 6973-09-7 name is 5-Amino-2-methylbenzenesulfonamide, 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.

Example 60: Process for the preparation of PZP.HCI[000177] A 250 mL reactor equipped with a mechanical stirrer was charged with CPM I (4.84 g, 16.82 mmol), AMBS (3.29 g, 17.66 mmol, 1 .05 eq) and 90% acetic acid (29 mL, 6V) and the reaction mixture was heated to 55 C with stirring, leading to dissolution. After 3.5 h precipitation commenced and the reaction was continue for 22 h in total. The resulting mixture was then heated to 65 C over 0.5 h and stirring was continued at the same temperature for an additional 5 h. The reaction mixture was then heated to 100 C over 1 h leading to complete dissolution. Stirring was continued at the same temperature for 0.5 h and then EtOH abs. (48 mL, 10V) was added drop-wise with concomitant cooling to 80 C over a period of 0.5 h. The mixture was then cooled to 0 C over a period of 4 h and stirring was continued at the same temperature for 16 h. The solids were filtered and the filter cake was washed with EtOH abs. (4x 14.5 mL, 4×3 V) at Patent ApplicationAtty Docket No. 14669.0172 WOU 1 room temperature and dried in a vacuum oven (35 mbar) at 60 C for 22 h to give pure PZP.HC1 (7.05 g, 88.5% yield, 99.4% assay, 99.9% purity, 7.32% CI, CPMI < 20 ppm) as a beige powder. At the same time, in my other blogs, there are other synthetic methods of this type of compound, 5-Amino-2-methylbenzenesulfonamide, and friends who are interested can also refer to it. Reference:
Patent; TEVA PHARMACEUTICAL INDUSTRIES LTD.; TEVA PHARMACEUTICALS USA, INC.; RENDELL, Jacob; KWOKAL, Ana; WO2011/69053; (2011); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics