Amides-buliding-blocks

Application of 5004-88-6,Some common heterocyclic compound, 5004-88-6, name is 2-Amino-4,5-dimethoxybenzamide, molecular formula is C9H12N2O3, 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.

General procedure: A mixture of 2-chlorobenzoic acid (1b) (0.61 g, 3.92 mmol) and thionyl chloride (1 mL) was heated for 2 h. The excess of thionyl chloride was recovered under reduced pressure and the residue so obtained was dissolved in dry dioxane (1 mL). The solution was then dropwise added to mixture of 2-amino-4,5-dimethoxybenzamide (2) (0.7 g, 3.57 mmol) and TEA (1.2 mL, 8.92 mmol) in dry dioxane (2 mL) at 10 C. The reaction mixture was stirred at rt for another 1 h and quenched into cold water (50 mL). The precipitate formed was filtered, washed with water and dried to obtain compound 3b (0.85 g, 71%).

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-4,5-dimethoxybenzamide, its application will become more common.

Reference:
Article; Yadav, Mange R.; Grande, Fedora; Chouhan, Bishram S.; Naik, Prashant P.; Giridhar, Rajani; Garofalo, Antonio; Neamati, Nouri; European Journal of Medicinal Chemistry; vol. 48; (2012); p. 231 – 243;,
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224789-21-3, name is 2-(2-Ethoxyphenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(3H)-one, 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. Safety of 2-(2-Ethoxyphenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(3H)-one

EXAMPLE 1 (procedure for the preparation of 4-ethoxy-3-(5-methyl-4-oxo-7-propyl-3,4- dihydroimidazo-[5,l-fJ[l,2,4]triazin-2-yl)benzenesulfonylchloride)A solution of 50 g of 2-(2-ethoxyphenyl)-5-methyl-7-propyl-3H-imidazo[5, l-f][l,2,4]triazin- 4-one, dissolved in 500 ml of dichloromethane was added dropwise to a solution of 100 ml of chlorosulfonic acid and 50 ml of dichloromethane during ca. 90 minutes. The mixture was further stirred at laboratory temperature (23 C) overnight, 24 hours in total. On the following day, the reaction mixture was poured into 800 g of ice. After the ice has thawed, the mixture was thoroughly mixed. The precipitated solid substance was filtered off, the filtration cake was washed with dichloromethane (2 x 100 ml) and the isolated solid product was vacuum dried (20 C, 1 to 2 kPa (10 to 20 mbar)). The product was obtained in the form of an off-white powder in the yields of from 1 10 to 1 15% (calculated on the non-protonated form of the product).

The synthetic route of 224789-21-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ZENTIVA, K.S.; HALAMA, Ales; STRELEC, Ivo; DAMMER, Ondrej; WO2013/75680; (2013); A1;,
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Adding a certain compound to certain chemical reactions, such as: 1015-89-0, name is Phenanthridin-6(5H)-one, belongs to amides-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 1015-89-0, Computed Properties of C13H9NO

Step 1: Synthesis of 2-bromophenanthridone 99.8 g (511 mmol) was added to the phenanthridine dinon 3 ? flask equipped with a plurality of necked stirring arm and is equipped with a condenser. It was added to 1.2 ? of glacial acetic acid and the mixture was stirred at 150 rpm, heated to reflux. A 90 g (562 mmol) Br2 dispersed in 100 acetic acid was added dropwise over 3 hours to a solution being refluxed. After the addition, the mixture was found to be analyzed is about 80% complete. Based on this analysis, it was added dropwise while refluxing the (in the 30 acid) Add 20 g of Br2 in the mixture. After the addition, the analysis is> 90% completed. It was added dropwise to 20 g Br2 end (30 of the acid) and the mixture was stirred for 1 hour after addition. Final analysis> was 97%. The mixture was cooled, water was added in 1 ?, and the mixture was filtered. By stirring in a wet solids aqueous solution of sodium thiosulfate was decomposed the residual bromine, and filtered again. thisRinse the solid with H2O, and allowed to dry under vacuum to remove residual water. Thereafter, the solid was recrystallized from nitrobenzene (> ? 2), and collected on a funnel to give 128 g of 2-bromo-phenanthridine dinon (90.8% yield).

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Reference:
Patent; UNIVERSAL DISPLAY CORPORATION; NOLIS, DAVID B; LIN, CHOOK; MCKINSEY, PETER BODON; CHAI, CHUI LEE; WALTERS, ROBERT W; PIERS, SCOTT A; BROWN, CORY S; IGOR, WALTER H; (101 pag.)KR2016/30582; (2016); A;,
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Electric Literature of 22117-85-7, 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. 22117-85-7, name is 2-Methoxy-5-sulfamoylbenzoic acid belongs to amides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

EXAMPLE 72 5-(Aminosulfonyl)-2-hydroxybenzoic acid A mixture of 2-methoxy-5-sulfamoylbenzoic acid (58 g, 0.25 mole), 48% hydrobromic acid (150 ml), and acetic acid (150 ml) was heated to reflux for five hours. The progress of reaction was checked by thin layer chromatography (silica gel, 7:2:1 ethylacetate/methanol/29% ammonium hydroxide). Upon cooling, a solid crystallized out which was collected by filtration, and rinsed with cold water. This solid was dissolved in hot water (?85 C.) and filtered through Celite and recrystallized from the cool filtrate. Some of the recrystallized material was crystallized once more by dissolving in methanol, filtering, and mixing with excess amount of 1,1,1-trichloroethane. The mixture was evaporated to remove most of the methanol, and the resulting crystallizing mixture was stirred in ice bath. The solid was collected by filtration and rinsed with 1,1,1-trichloroethane, vacuum pumped at room temperature overnight to give a white solid, mp 234-235 C. Analysis: Calculated for C7 H7 NO5 S: C, 38.71; H, 3.25; N, 6.45. Found: C, 38.53; H, 3.19; N, 6.41.

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, 2-Methoxy-5-sulfamoylbenzoic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; A. H. Robins Company, Incorporated; US4990523; (1991); A;,
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Electric Literature of 112253-70-0, A common heterocyclic compound, 112253-70-0, name is 2-Amino-4-bromobenzamide, molecular formula is C7H7BrN2O, 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.

Example 5.25c. Synthesis of (9H-fluoren-9-yl)methyl 2-(5-bromo-2- carbamoylphenylcarbamovDpyrrolidine- 1 -carboxylateA solution of (9H-fluoren-9-yl)methyl 2-(chlorocarbonyl)pyrrolidine- l-carboxylate (600 mg, 1.8 mmol), 2-amino-4-bromobenzamide (400 mg, 1.8 mmol), and Et3N (2 mL) in THF was stirred at room temperature . The reaction was monitored by TLC. After diluting with H20 (50 mL), the mixture was extracted with ethyl acetate (3 x 100 mL). The organic layers were dried over Na2S04 and concentrated to give yellow residue, which was purified by column chromatography. MS (ESI): 534, 536(MH+)

The synthetic route of 112253-70-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SUNOVION PHARMACEUTICALS INC.; HARDY, Larry, Wendell; HEFFERNAN, Michele, L., R.; WU, Frank, Xinhe; SPEAR, Kerry, L.; SARASWAT, Lakshmi, D.; WO2011/75699; (2011); A2;,
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Some common heterocyclic compound, 94838-59-2, name is tert-Butyl 4-aminophenethylcarbamate, molecular formula is C13H20N2O2, 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. Recommanded Product: 94838-59-2

Z-Phe-Cit (9.13 g, 20 mmol) was charged into a mixture of dichloromethane (750 mL) and isopropanol (250 mL) and then stirred until the dipeptide was completely dissolved. Then, APEA-Boc (7.09 g, 30 mmol) and EEDQ (7.42 g, 30 mmol) were added and the mixture was stirred at room temperature for 3 days. The solvents were removed under reduced pressure and then diethyl ether (300 mL) was added to the residue. The mixture was filtered off and the crude product was re-suspended in diethyl ether (300 mL). This procedure was repeated 3 times. The collected solid product was finally dried under vacuum to afford Z-Phe-Cit-APEA-Boc (9.53 g, yield 70.6%). The product was characterized by PMR.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 94838-59-2, its application will become more common.

Reference:
Patent; Industrial Technology Research Institute; KO, Yi-Ju; LI, Jheng-Sian; LU, Maggie; LEE, On; CHENG, Ping-Fu; LIU, Chun-Min; (74 pag.)US2017/119902; (2017); A1;,
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Electric Literature of 91893-69-5, A common heterocyclic compound, 91893-69-5, name is 2-Amino-N,N-dimethylethanesulfonamide hydrochloride, molecular formula is C4H13ClN2O2S, 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.

General procedure: General procedure C: A mixture of amine hydrochloride (1.73 mmol), NaOH (0.10 g, 2.59 mmol) and ethanol (50 mL) was stirred and heated to reflux for 1 h. Then gossypol acetic acid (0.50 g, 0.86 mmol) was added and the reaction liquid continued to reflux for 5 h. The reaction mixture was cooled to room temperature and then the resulting solid was filtered, washed with ethanol and then recrystallized with pyridine and ethanol or chloroform and ethanol to give the desired gossypol derivatives. Data for 19: General procedure C; yellow solids; yield, 61.0%; mp, 235-237C; 1H NMR (400MHz, CDCl3) delta 13.47-13.37 (m, 2H), 9.64 (d, J=12.2Hz, 2H), 7.89 (s, 2H), 7.59 (s, 2H), 5.61 (s, 2H), 3.95 (dd, J=11.8, 6.5Hz, 4H), 3.76-3.66 (m, 2H), 3.26 (t, J=6.5Hz, 4H), 2.88 (s, 12H), 2.11 (s, 6H), 1.55-1.50 (m, 12H); 13C NMR (100MHz, CDCl3) delta 173.51, 162.80, 149.02, 146.96, 132.25, 129.22, 128.09, 118.37, 115.97, 114.40, 103.70, 48.57, 45.17, 37.28, 27.45, 20.34, 20.29, 20.07; HRMS (ESI) calcd for C38H49N4O10S2 (M-H)- 785.2896, found 785.2873.

The synthetic route of 91893-69-5 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Li, Ling; Li, Zheng; Wang, Kailiang; Liu, Yuxiu; Li, Yongqiang; Wang, Qingmin; Bioorganic and Medicinal Chemistry; vol. 24; 3; (2016); p. 474 – 483;,
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Some common heterocyclic compound, 6292-59-7, name is 4-(tert-Butyl)benzenesulfonamide, molecular formula is C10H15NO2S, 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. Quality Control of 4-(tert-Butyl)benzenesulfonamide

General procedure: To a solution of 12 3,4-diphenyl-1H-pyrrole-2,5-dione 4b (4.96mmol) in 83 CH3CN (20mL), 84 K2CO3 (4.96mmol), 85 TBAB (0.5mmol) and 16 1,4-dibromobutane (19.84mmol) were added and the mixture was stirred at 45¡ãC overnight. Solvent was evaporated to dryness, 86 water (50mL) added and the resulting mixture extracted with ethyl acetate. Collected organic layers were dried over anhydrous Na2SO4 and solvent evaporated to dryness. 17 8 was obtained by a silica gel column chromatography. The solution of 88 BBr3 (1M, 9.47mmol) in anhydrous 89 CH2Cl2 was added to compound 17 8 (3.94mmol) in 20mL anhydrous CH2Cl2 under nitrogen atmosphere at ?78¡ãC. The mixture was stirred at ?78¡ãC for 1h. The temperature rised to 0¡ãC, 10mL 90 H2O was added and the resulting solution was stirred for 0.5h and extracted with ethyl acetate. Collected organic layers were washed with brine and dried over anhydrous Na2SO4, and solvent was evaporated to dryness to afford compound 18 9, a yellow solid with sufficient purity to be used without further purification. To a solution of 18 9 (1.86mmol) and 84 K2CO3 (2.28mmol) in 10mL 92 acetone, methyl bromoacetate was added. The reaction proceeded reflux overnight and was added 30mL 86 water. Then, the mixture was extracted with ethyl acetate and dried over anhydrous Na2SO4. The residue was purified by a silica gel column chromatography to give 93 10. K2CO3 (1.76mmol), KI (1.32mmol), substituted aromatic sulfonamide (1.32mmol) and compound 10 were added to 2mL CH3CN. The mixture was stirred reflux overnight, and solvent was concentrated, H2O (12mL) added and the resulting mixture extracted with ethyl acetate. Collected organic layers were dried over anhydrous Na2SO4 and evaporated. 11 was obtained by a silica gel column chromatography. 1M aqueous solution of LiOH (1.11mmol) was added to the solution of compound 11 (0.742mmol) in 4mL THF at ?5¡ãC. The mixture was stirred at ?5¡ãC until complete by TLC and adjusted to pH 5 by 1M HCl. The resulting mixture was extracted with diethyl ether, and the organic layer was wash by brine and dried over anhydrous Na2SO4. The solution was evaporated to afford compound 12. To a solution of glycylglycine methyl ester hydrochloride (0.81mmol) and DIPEA (1.62mmol) in 5mL CH3CN, 12 (0.67mmol), HOBt (0.81mmol) and EDCl (0.81mmol) were added at 0¡ãC. The mixture proceeded at 50¡ãC overnight, diluted with CH2Cl2 and washed with brine. The organic layer was dried over anhydrous Na2SO4 and evaporated. Compound 13 was obtained by the silica gel column chromatography. For the synthesis of 14a-j, Et3N (0.866mmol) and LiCl (0.94mmol) were added to the solution of compound 13 in 5mL CH3CN: H2O (95: 5) at 0¡ãC. The solution was adjusted to pH 5 by 1M HCl and evaporated by CH2Cl2. Combined organic layer was washed by brine, dried over anhydrous Na2SO4 and concentrated. The resulting residue was triturated with ethyl acetate and filtrated to give target compound 14a-j.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 6292-59-7, its application will become more common.

Reference:
Article; Yuan, Xinrui; Xia, Yineng; Lu, Peng; Zhu, Lijuan; Zhong, Yuejiao; Wang, Yubin; Bioorganic and Medicinal Chemistry; vol. 26; 8; (2018); p. 1435 – 1447;,
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Adding a certain compound to certain chemical reactions, such as: 104863-65-2, name is N-Methoxy-N-methylpropionamide, belongs to amides-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 104863-65-2, name: N-Methoxy-N-methylpropionamide

The reaction formula of this embodiment is as follows:In a 25 ml reaction flask, add compound 1a (0.3 mmol, 0.1561 g), compound 2i (15 mmol, 1.7573 g), water (30 muL), DCM (5 mL) to dissolve the above materials, and stir the reaction at 60 C. The reaction time is 3 h. After the reaction was completed, the solvent was removed by spin-drying, and the residue was subjected to flash column chromatography (PE: EA = 20: 1) to obtain pure product 3ai (0.0534 g) with a yield of 76%.

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-methylpropionamide, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Xuzhou Medical University; Wu Nan; Xu Zhou; Mi Jiajia; Li Chuang; Yuan Changyong; Zheng Yan; (15 pag.)CN110668937; (2020); A;,
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Some common heterocyclic compound, 108-13-4, name is Malonamide, molecular formula is C3H6N2O2, 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 108-13-4

General procedure: An example of the preparation of the amide intermediate was carried out. Blocking the reaction vessel (when the amide intermediate is at a boiling point under normal pressure, etc.At or below the reaction temperature TB below) or to keep the reactor open (when the boiling point of the amide intermediate at normal pressure is higher than the reaction temperature TB described below), stirring is continued (600 r / min), The reaction temperature is changed to TB, and after maintaining the reaction temperature TB for TD hours, the reaction vessel is closed and connected to a vacuum pump, so that the degree of vacuum in the reaction vessel reaches 20-50 mbar (adjusted according to the type of nitrile product) to distill off As a nitrile product. The yield of the nitrile product was calculated and sampled for nuclear magnetic resonance spectroscopy and elemental analysis to characterize the obtained nitrile product. The specific reaction conditions and characterization results are shown in Tables A-6, A-7, A-8, A-9 and A-10 below. These characterization results indicate that the obtained nitrile product has an extremely high purity (99% or more).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 108-13-4, its application will become more common.

Reference:
Patent; Sinopec Yangzi Petrochemical Co., Ltd.; Sinopec Corporation; Sun Hailong; Gao Yilong; Wei Yanyu; Chen Xinhua; Miao Jun; Li Na; Kan Lin; Bai Jiye; Chen Shaohui; Yang Aiwu; Xu Yuexing; (32 pag.)CN105016941; (2018); B;,
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