Month: March 2021

Related Products of 885-70-1, 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. 885-70-1, name is 5,11-Dihydropyrido[2,3-b][1,4]benzodiazepin-6-one, This compound has unique chemical properties. The synthetic route is as follows.

EXAMPLE 20 L-5,11-Dihydro-11-[[6-methyl-2,6-diazabicyclo[3.3.0]oct-2-yl]carbonyl]-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one 2.6 g (0.021 mole) of L-2-methyl-2,6-diazabicyclo [3.3.0]octane were added dropwise to a mixture consisting of 11.2 ml of a 20% strength solution of phosgene in toluene, 50 ml of acetonitrile and 2.4 g (0.023 mole) of anhydrous sodium carbonate while externally cooling with ice. After 60 minutes, 4.5 g (0.021 mole) of 5,11-dihydro-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one were added and the mixture was heated under reflux for 4 hours. The hot mixture was filtered, the precipitate was washed three times using 10 ml of hot acetonitrile each time and the combined filtrates were concentrated in vacuo to a total volume of 15 ml. The solution was cooled in an ice bath and the resulting crystal paste was filtered under suction. Recrystallisation from acetonitrile produced 2.1 g (27% of theory) of colourless crystals of m.p. 220-222 C., identical to the preparation made as in Example 6c according to mixed melting point and spectroscopic data. 5,11-Dihydro-11-[[7-methyl-3,7-diazabicyclo[3.3.0]oct-3-yl]carbonyl]-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one of m.p. 157-159 C. (acetonitrile) 5,11-dihydro-11-[[10-methyl-4,10-diazatricyclo[5.2.1.02,6 ]dec-4- yl]carbonyl]-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one of m.p. 218-220 C. (ethyl acetate) were obtained in corresponding manner.

The chemical industry reduces the impact on the environment during synthesis 5,11-Dihydropyrido[2,3-b][1,4]benzodiazepin-6-one. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Rudolf; Klaus; Engel; Wolfhard; Eberlein; Wolfgang; Trummlitz; Gunter; Mihm; Gerhard; Doods; Henri; Mayer; Norbert; US5179090; (1993); A;,
Amide – Wikipedia,
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177210-33-2, name is 5-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-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. Computed Properties of C8H7NO3

[00327] A solution of 5-hydroxy-2H-benzo[b][l,4]oxazin-3(4H)-one (100 mg, 0.604 mmol) and K2C03 (167 mg, 1.21 mmol) in anhydrous DMF (5 mL) was stirred at 27 C for 5 minutes, then ethyl 2-bromoacetate (121 mg, 0.727 mmol) was added. The reaction mixture was stirred at 27 C for 16 h and concentrated. MS (ESf ) e/z: 238.0 [M+l]+.

The synthetic route of 177210-33-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; EPIZYME, INC.; DUNCAN, Kenneth, W.; CHESWORTH, Richard; BORIACK-SJODIN, Paula, Ann; MUNCHHOF, Michael, John; WO2014/100734; (2014); A1;,
Amide – Wikipedia,
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Application of 621-38-5, A common heterocyclic compound, 621-38-5, name is 3-Bromoacetanilide, molecular formula is C8H8BrNO, 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: A dry argon-flushed Schlenk flask, equipped with a magnetic stirrer and a septum was charged with asolution of 1-iodo-1-(3′,4′,5′-trimethoxyphenyl)ethylene (48 mg, 0.15 mmol) in 1.5 mL of dry THF.The solution of i-PrMgCl¡¤LiCl (0.17 ml of 0.97 M solution in THF, 0.165 mmol) was added slowly at -20 C, and the reaction mixture was stirred at this temperature for 20 min to complete I/Mg exchange. 1 M solution of ZnCl2 (0.15 ml of 1 M solution in THF, 0.15 mmol) was added dropwise for 1 min at -20 C and the reaction mixture was warmed to room temperature. 3-(Methoxymethoxy)-4-methoxyphenyl iodide (44 mg, 0.15 mmol) was placed in a round bottom flask under argon. Solution of Pd(OAc)2 (1.35 mg, 0.006 mmol) and S-Phos (3.7 mg, 0.009 mmol) in 1 mlof THF was added, followed by dropwise addition of prepared solution of organo zinc reagent (0.15mmol) over a period of 1 min at room temperature. The reaction mixture was stirred at room temperature for 5 h, poured into saturated aq. NH4Cl solution and extracted with EtOAc. The organiclayer was washed with brine, dried over Na2SO4 and concentrated in vacuo and the residue was purified by flash chromatography on silica gel (petroleum ether/EtOAc, 5:1) to give 5a-OMOM (44mg, 0.122 mmol, 81%) as brown oil.

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; Malysheva, Yulia B.; Buchvalova, Svetlana Y.; Svirshchevskaya, Elena V.; Fokin, Valery V.; Fedorov, Alexey Y.; Synlett; vol. 24; 14; (2013); p. 1772 – 1776;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Reference of 177210-33-2, These common heterocyclic compound, 177210-33-2, name is 5-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one, 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 suspension of 11 (2.00 g, 12.1 mmol), benzyl bromide (1.6 mL,13.3 mmol) and K2CO3 (2.35 g, 17.0 mmol) in acetone (60 mL) wasstirred at reflux for3 h.Themixturewascooled toroomtemperature,filteredand the solventwasevaporated.The residuewasdissolved in THF/glacial acetic acid 9:1 (70 mL) and bromine (680 lL, 13.3 mmol)was added dropwise. The reaction was stirred at room temperaturefor 2 h. Then, 1% Na2S2O3 solution (200 mL) was added and the mixturewas kept at 0 C for 18 h. The suspension was filtered and thesolid was dissolved in EtOAc. After the solvent was evaporated, theresidue was purified by flash chromatography (cyclohexane/EtOAc4:1) to give 12 as yellowish solid (2.8 g, 70% yield). IR: 3316, 3132,3079, 2955, 2842, 1660, 1610, 1565, 1485, 1455, 1377, 1266, 1169,835 cm1. 1H NMR (360 MHz, CDCl3) d (ppm) 4.69 (s, 2H), 5.08 (s,2H), 6.55 (d, J = 8.9 Hz, 1H), 7.11 (d, J = 8.9 Hz, 1H), 7.36-7.42 (m,5H), 7.86 (s, 1H). 13C NMR (90 MHz, CDCl3) d (ppm) 67.42, 71.30,102.09, 107.07, 116.86, 126.26, 127.81, 128.27, 128.85, 135.42,140.91, 144.96, 163.48. HR-EIMS calcd. 333.0001; found: 333.001.HPLC: System1: tR = 20.9 min, purity: 96.4%

Statistics shows that 5-Hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one is playing an increasingly important role. we look forward to future research findings about 177210-33-2.

Reference:
Article; Weichert, Dietmar; Stanek, Markus; Huebner, Harald; Gmeiner, Peter; Bioorganic and Medicinal Chemistry; vol. 24; 12; (2016); p. 2641 – 2653;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 26638-53-9, A common heterocyclic compound, 26638-53-9, name is 3-Chloro-6,11-dihydro-6-methyl-5,5,11-trioxodibenzo[c,f][1,2]thiazepine, molecular formula is C14H10ClNO3S, 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.

N-bromosuccinimide (187 mg, 1.05 mmol) was added portionwise to a solution of ketone 3f (308 mg, 1.0 mmol) and FeCla (324 mg, 2.0 mmol) in CH2CI2 (10 mL) and CH3CN (5 mL) , and the reaction mixture was stirred at room temperature for 3 h. Additional W-bromosuccinimide (187 mg, 1.05 mmol) was then added and the reaction mixture was stirred at room temperature for a further 14 h. The reaction mixture was washed with water and brine and dried over NaSCli. The crude product was purified by column chromatography ( CH2CI2 : hexane – 2:1) followed by crystallization from MeOH. The product 3k was obtained as a white solid (290 mg, 75 percent) . XH NMR (400 MHz, Acetone-dg) 3 8.31 (d, J = 2.5 Hz, 1H) , 8.00 – 7.96 (m, 1H) , 7.95 – 7.89 (m, 3H) , 7.58 (d, J = 8.7 Hz, 1H) , 3.44 (s, 3H) ; 13C NMR (101 MHz, Acetone-dg) delta 189.6, 142.0, 139.1, 139.0, 138.4, 135.3, 134.7, 134.3, 132.8, 127.9, 125.8, 119.4, 39.3; LR-MS calcci. for C ,HioBrClN03S [M+H]+ 387.92, found 388.63.

The synthetic route of 26638-53-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK; KRUEGEL, Andrew C.; HENKE, Adam; GASSAWAY, Madalee M.; RIVERS, Marie-laure; JAVITCH, Jonathan A.; SAMES, Dalibor; WO2015/138791; (2015); A1;,
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Reference of 6873-44-5, The chemical industry reduces the impact on the environment during synthesis 6873-44-5, name is 4-Chloro-N-methylbenzamide, I believe this compound will play a more active role in future production and life.

General procedure: Methacryloyl chloride (2 equiv.) was added to a mixture of amide (1 equiv.), triethylamine (2 equiv.) and DMAP (0.1 equiv.) in dichloromethane (20 mL). The resulted mixture was stirred at 35 oC for 10-12 h. The reaction was quenched with saturated aqueous Na2CO3 (5 mL), and then the mixture was extracted with dichloromethane (3 x 5 mL). The combined organic layers were dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (petroleum ether/ethyl acetate as the eluent) affording the corresponding N-alkyl-N-methacryloyl benzamides 1.

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, 4-Chloro-N-methylbenzamide, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Chen, Yu-Jue; He, Yan-Hong; Guan, Zhi; Tetrahedron; vol. 75; 22; (2019); p. 3053 – 3061;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Related Products of 22117-85-7, 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 22117-85-7 as follows.

EXAMPLE 9 Preparation of the compound of formula STR15 Benzyl-piperazine, PCl3 and 2-methoxy-5-sulphamoyl-benzoic acid were reacted in a reactor in accordance with the method described in Example 1. The product of formula STR16 was separated, and debenzylated by catalytic reduction with 5% Pd on C in ethyl alcohol. The 2-methoxy-5-sulphamoyl-benzoylpiperazine obtained in this manner was reacted with acetyl chloride in a molar ratio of 1:1, in benzene in the presence of pyridine, was filtered off, washed and crystallized from a mixture of methanol and ethyl acetate.

According to the analysis of related databases, 22117-85-7, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Ravizza S.p.a.; US4940793; (1990); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 1015-89-0, A common heterocyclic compound, 1015-89-0, name is Phenanthridin-6(5H)-one, molecular formula is C13H9NO, 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 28 STR46 To a mixture of phenanthridone 32 and PCl5 is added a molar excess of POCl3. The reaction is heated to reflux until chromatographic analysis indicates complete reaction, cooled and quenched by pouring onto ice. The aqueous layer is extracted with CHCl3. The organic layer is dried over MgSO4, filtered and evaporated to provide phenanthridine 33.

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; Merck & Co., Inc.; US5336674; (1994); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 618446-06-3, The chemical industry reduces the impact on the environment during synthesis 618446-06-3, name is 7-Amino-4,4-dimethyl-3,4-dihydro-1,8-naphthyridin-2(1H)-one, I believe this compound will play a more active role in future production and life.

7-Fluoro-4,4-dimethyI-3,4-dihydro-lH-[l,8]naphthyridin-2-one; 7-Fluoro-4,4-dimethyl-3,4-dihydro-lH-[l,8]naphthyridin-2-one, was produced as follows: HF-pyridine (100 mL) was cooled to -42 0C in a 1000 mL HDPE bottle using an CH3CN dry ice bath. While stirring vigorously, 7-amino-4,4-dimethyl-3,4- dihydro-lH-[l,8]naphthyridin-2-one (24.6 g, 0.129 mol) was added portionwise to control the exotherm. After the addition, NaNO2 (8.9 g, 0.1291 mol) was added portionwise. Significant exotherms were observed for both additions. The reaction mixture was then allowed to warm to 0 0C and stir for 2 h. The reaction mixture was quenched into a 4 L high density polyethylene (HDPE) bottle full of ice. The aqueous slurry was then neutralized using 2 N KOH. The resulting aqueous solution was extracted 3 times with CH2Cl2. The organic layers were dried over Na2SO4, filtered and concentrated to dryness. Excess pyridine was azeotroped with heptane. The product was dried under vacuum (2 mm Hg) for 3 h. The resulting product, 7-fluoro-4,4- dimethyl-3,4-dihydro-lH-[l,8]naphthyridin-2-one, was in the form of a white powder (23.06 g, 0.119 mol, 92%). MS: APCI: M+l: 195.1 (Exact Mass: 194.09).

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, 7-Amino-4,4-dimethyl-3,4-dihydro-1,8-naphthyridin-2(1H)-one, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; WARNER-LAMBERT COMPANY LLC; WO2006/90272; (2006); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Synthetic Route of 39549-79-6, 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. 39549-79-6, name is 2-Amino-4-methylbenzamide belongs to amides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: A 15 mL tube was added 2-aminobenzamide (1 mmol), benzyl amine (1.5 mmol), and a stir bar. Then H2O2 (30 wtpercent in H2O, 5 equiv.) was added by a syringe at room temperature under open air. The tube was closed and kept at 120¡ãC for 20 h. The conversion and yield were determined by GC and GC?MS using hexadecane (0.1 mmol) as the internal standard.

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-Amino-4-methylbenzamide, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Qi, Xin-Xin; Song, Zhen-Zhen; Gong, Jin-Long; Fang, Zheng-Yu; Wu, Xiao-Feng; Chinese Chemical Letters; vol. 27; 1; (2016); p. 21 – 24;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics