Amides-buliding-blocks

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. 207405-68-3, name is tert-Butyl endo-3-amino-8-azabicyclo[3.2.1]octane-8-carboxylate belongs to amides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 207405-68-3

Example 1; Synthesis of 4-(tetrahydrofuran-2-carbonyl)piperazine-1-carboxylic acid 3-{(1S,3R,5R)-3-[(3-isopropyl-2-oxo-2,3-dihydrobenzoimidazole-1-carbonyl)amino]-8-aza-bicyclo[3.2.1]oct-8-yl}propyl ester; a. Preparation of (1S,3R,5R)-3-[(3-isopropyl-2-oxo-2,3-dihydrobenzoimidazole-1-carbonyl)amino]-8-azabicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester; To a cold suspension of sodium hydride (9.25 g; 231.4 mmol; 60% dispersion in mineral oil) in dry THF (1000 L) in an ice bath was added the product of Preparation 1, 1-isopropyl-1,3-dihydro-2H-benzimidazol-2-one (27.2 g, 154.2 mmol), in THF (50 mL) under nitrogen atmosphere. The mixture was stirred at 0-5 C. for 30 min, then 4-nitrophenyl chloroformate (34.2 g, 170 mmol) in THF (50 mL) was added. The mixture was stirred overnight while allowing the mixture to gradually warm to ambient temperature. To the activated ester formed was then added (1S,3R,5R)-3-amino-8-azabicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (36.7 g, 162 mmol) in THF (50 mL). The mixture was stirred at ambient temperature for about 12 h, and at about 75 C. for about 3 h, at which time an LCMS of the reaction sample indicated completion of the coupling reaction. The mixture was concentrated in vacuo, dissolved in dichloromethane (1 L), and washed with first 1M H3PO4, and then saturated NaHCO3 solution. After drying, the organic solution was evaporated to provide the title intermediate as a pale yellow residue that was used in the next step without further treatment.

The synthetic route of 207405-68-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; THERAVANCE, INC.; US2007/117796; (2007); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Some common heterocyclic compound, 39549-79-6, name is 2-Amino-4-methylbenzamide, molecular formula is C8H10N2O, 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. category: amides-buliding-blocks

General procedure: The 2-aminobenzamide (1 equiv), the orthoester (2-3 equiv) and absolute ethanol (2-3 mL) wereplaced in a 15-mL Chemglass screw-cap pressure tube (No. CG-1880-01, Chemglass, Vineland, NJ,USA). Glacial acetic acid (3 equiv) was added, N2 was introduced to the vessel and the cap wastightened. The vessel was heated at 110 C for 12-72 h, then cooled and concentrated to give thequinazolinone, which was purified by crystallization from absolute ethanol or trituration from 5%ether in pentane. The following compounds were prepared:

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 39549-79-6, its application will become more common.

Reference:
Article; Gavin, Joshua T.; Annor-Gyamfi, Joel K.; Bunce, Richard A.; Molecules; vol. 23; 11; (2018);,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

These common heterocyclic compound, 60144-53-8, name is tert-Butyl (4-fluorophenyl)carbamate, 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. Product Details of 60144-53-8

A one-pot procedure to synthesize 4-fluoroaniline (3-98) from N-Boc-aniline (3-103c) and iV-Boc-4-/er/-butylaniline (3-105c) was developed (Scheme 4). Thus, treatment of N-Boc- aniline (3-103c) and iV-Boc-4-te t-butylaniline (3-105c) using the above standard fluorination conditions followed by the addition of 10% TFA gave the desired4-fluoroaniline (3-98) in 15% and 37% yields over the two steps, respectively. (Reagent and conditions. PhI(OAc)2 (1 equiv), HF-py (4 equiv), CH2C12 (0.1 M), 25 C, 30 min; then 10% TFA/CH2C12, 15 min, 25 C, 15% (from 3-103c), 37% (from 3-105c).)

The synthetic route of tert-Butyl (4-fluorophenyl)carbamate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ISIS INNOVATION LIMITED; GOUVERNEUR, Veronique; LI, Lei; LIM, Yee-Hwee; HUIBAN, Mickael; WO2012/4567; (2012); A2;,
Amide – Wikipedia,
Amide – 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. 116861-31-5, name is tert-Butyl (3-chloropropyl)carbamate, A new synthetic method of this compound is introduced below., Product Details of 116861-31-5

A mixture of 3.8 g (12.88 mmol) ethyl 7-bromo-3-hydroxynaphthalen-2-carboxylate, 3.0 g (15.5 mmol) 1-(tert.-butoxycarbonylamino)-3-chloropropane (prepared according to Helv. Chim. Acta 76 (1993), 1644), 2.0 g (14.5 mmol) potassium carbonate, and a catalytic amount of potassium iodide in 20 ml dry DMF was stirred at 90 C. for 6 h. It was poured into water, extracted three times with ethyl acetate, and the combined organic layers were washed three times with water, dried over sodium sulfate, and concentrated in vacuo. The intermediate was purified by chromatography on silica gel with toluene/acetone 9:1 to give 5.8 g (100%) of a yellow oil, which solidified rapidly upon standing.

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; Takeuchi, Kumiko; Jirousek, Michael Robert; Paal, Michael; Ruhter, Gerd; Schotten, Theo; US2004/9976; (2004); A1;,
Amide – Wikipedia,
Amide – 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. 1882-71-9, name is 2-Amino-5-methoxybenzamide, A new synthetic method of this compound is introduced below., Product Details of 1882-71-9

General procedure: A solution of anthranilamide (30 mmol) in 1 N HCl (120 mL) was stirred at 0 C for 20 min. Then, sodium nitrite (60 mmol) dissolved in deionized water (100 mL) was added dropwise to the above solution for 40 min. After another 2 h of stirring at 0 C, 30% NaOH solution was added slowly to adjust the pH to 8.0. The reaction mixture was allowed to stir vigorously for 15 min. The precipitated product was filtered off with suction, washed with deionized water (200 mL), and dried to afford compound 4 in yield of 82%.

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; Chen, Xiulei; Jia, Haowu; Li, Zhong; Xu, Xiaoyong; Chinese Chemical Letters; vol. 30; 6; (2019); p. 1207 – 1213;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Related Products of 177906-48-8, 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. 177906-48-8 name is trans-N-Boc-1,4-cyclohexanediamine, 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.

Synthesis of compound 13.2. To a solution of compound 13.1 (6.43 g, 30.00 mmol, 1.00 equiv) in 80 mL of distilled THF was added LiAlH4 (5.7 g, 168.03 mmol, 5.00 equiv) portion-wise at 0C under nitrogen. After addition completion, the resulting mixture was stirred for 4 h at 80C in an oil bath. The reaction was then quenched with Na2SO4 10H2O and the solids were filtered out, washed with 100 mL of THF and the filtrate was concentrated under vacuum to give 3.5 g of trans- l-N-methylcyclohexane-l,4-diamine, compound 13.2 as a white solid

At the same time, in my other blogs, there are other synthetic methods of this type of compound, trans-N-Boc-1,4-cyclohexanediamine, and friends who are interested can also refer to it.

Reference:
Patent; NIMBUS IRIS, INC.; ROMERO, Donna L.; ROBINSON, Shaughnessy; GREENWOOD, Jeremy Robert; SHELLEY, Mee; MASSE, Craig E.; HARRIMAN, Geraldine C.; WO2015/164374; (2015); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 121492-06-6, 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. 121492-06-6 name is N-Boc-(2-Aminoethyl)-N-methylamine, 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.

To a solution of N-methyl-N-Boc-ethylenediamine (2.05 ml, 11.48 mmol) and NaCNBH3(685 mg, 10.9 mmol) in MeOH (20 mL) was added 2,4,6-trimethoxybenzaldehyde (2.14 g,10.9 mmol) as a solution in MeOH/DCM 1:1 v/v (40 ml) over 2 h. The mixture was stirred at room temperature for 1 h, acidified with 0.4 M HC1 (60 mL) and stirred further 30 mm. The reaction mixture was extracted 4 times with 150 mL ethyl acetate. The combined organic phase was washed with sat. NaHCO3 solution (200 mL) and brine (90 mL), dried overNa2SO4 and the solvents were evaporated under reduced pressure. The resulting N-methyl-NBoc-N?-Tmob-ethylenediamine 2a was dried in vacuo and used in the next reaction step without further purification.Yield: 4.02 g, 99%, colorless oil.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, N-Boc-(2-Aminoethyl)-N-methylamine, and friends who are interested can also refer to it.

Reference:
Patent; ASCENDIS PHARMA A/S; BISEK, Nicola; WEISBROD, Samuel; BIGOTT, Kornelia; (116 pag.)WO2018/11266; (2018); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Reference of 2618-96-4, 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. 2618-96-4, name is Dibenzenesulfonimide belongs to amides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Under N2, ynamide 1a (0.300 mmol, 108.7 mg) and diphenylsulfonimide (2a; 0.600 mmol, 178.4 mg, 2.00 equiv) were dissolved in CH2Cl2 (4.00 mL). The reaction mixture was allowed to stir at r.t. After the consumption of 1a (4.5 h, TLC, eluent: PE-EtOAc, 4:1), the mixture was concentrated, and the residue was purified by flash chromatography on silica gel (eluent: PE-EtOAc, 6:1 ? 4:1) to afford 3a.

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, Dibenzenesulfonimide, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Yu, Lian; Deng, Yuan; Cao, Jian; Synthesis; vol. 47; 6; (2015); p. 783 – 788;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 94838-59-2, A common heterocyclic compound, 94838-59-2, name is tert-Butyl 4-aminophenethylcarbamate, molecular formula is C13H20N2O2, 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.

To a solution of [2-(4-amino-phenyl)-ethyl]-carbamicacid te/t-butyl ester (2.32 g,9.82 mmol) in N,N-dimethylformamide (DMF) (50 ml) 18-crown-6 (50 mg) was added. At 00C potassium te/t-butylate (1.10 g, 9.82 mmol) was added and the mixture stirred for 30 min. After the addition of allylbromide (1.19 g, 9.82 mmol) the mixture was stirred at room temperature for 16 h. After concentration in vacuo the residue was partitioned between ethyl acetate and saturated aqueous Na-HCO3. The organic layer was washed with water, dried over MgSO4, filtered and the solvent evaporated under reduced pressure to give the product as a red oil (2.50 g, 92%).

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; ABBOTT GMBH & CO. KG; WO2006/40179; (2006); A1;,
Amide – Wikipedia,
Amide – 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. 869494-16-6, name is tert-Butyl 3,6-diazabicyclo[3.1.1]heptane-6-carboxylate, A new synthetic method of this compound is introduced below., HPLC of Formula: C10H18N2O2

To a solution of 4,5-dibromo-2,3-dihydropyridazin-3-one (461.0 mg, 1.82 mmol, 1.2 equiv.) in DMA(10 mL, 107.55 mmol) were added tert-butyl 3,6-diazabicyclo[3.1.1]heptane-6- carboxylate(300 mg, 1.51 mmol, 1 equiv.) and DIEA(391.1 mg, 3.03 mmol, 2 equiv.) at ambient temperature. The resulted mixture was stirred for 16 h at 100 degrees C. The reaction mixture was diluted with water(200 mL) and extracted with ethyl acetate(3*200 mL).The combined organic layers were washed with brine (200 mL), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated under reduced pressure. The residue was purified by reverse phase flash with the following conditions(Column: spherical C18, 20-40 um,330g; Mobile Phase A: Water(5mmol/L NH4HCO3), Mobile Phase B: MeCN; Flow rate: 80 mL/min; Gradient: 10% B to 60% B in 55 min; 254 nm) to afford tert-butyl 3-(5-bromo-6-oxo-1,6- dihydropyridazin-4-yl)-3,6-diazabicyclo[3.1.1]heptane-6-carboxylate(230mg,40.95%) as a light yellow 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; GOLDFINCH BIO, INC.; YU, Maolin; DANIELS, Matthew, H.; HARMANGE, Jean-christophe, P.; TIBBITTS, Thomas, T.; LEDEBOER, Mark, W.; WALSH, Liron; MUNDEL, Peter, H.; MALOJCIC, Goran; (860 pag.)WO2019/55966; (2019); A2;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics