Tag: M.W=100-200

Related Products of 2032-34-0, A common heterocyclic compound, 2032-34-0, name is 3,3-Diethoxypropanenitrile, molecular formula is C7H13NO2, 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: Method I. A mixture of Py (4.4 ml) and AcOH (3.0 ml) was stirred and treated by the addition of 5-aminoazole1a-h (0.01 mol) and (2E)-(3-morpholin-4-yl)-acrylonitrile (2) (1.38 g, 0.01 mol). The obtained mixture was refluxed at 150C for 5 h. After refluxing, the mixture was cooled. The precipitate that formed was filtered off, washed with a small amount of EtOH, and dried. Method II. A solution (or suspension) of the appropriate aminoazole 1a-h (0.01 mol) in solvent (15 ml) (EtOH in the case of compound 3a, dioxane in the case of compounds 3b-h) was stirred at 50C and treated by adding 3,3-diethoxypropionitrile (4) (1.5 ml, 0.01 mol), then 36% HCl solution (0.86 ml, 0.01 mol). The reaction mixture was refluxed for 2.5-3 h, the suspension (or solution) was cooled to room temperature, and the target product was isolated by the method indicated for each particular compound.

The synthetic route of 2032-34-0 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Gazizov, Denis A.; Fedotov, Victor V.; Gorbunov, Evgeny B.; Ulomskiy, Evgeny N.; Yeltsov, Oleg S.; Rusinov, Gennady L.; Rusinov, Vladimir L.; Chemistry of Heterocyclic Compounds; vol. 55; 6; (2019); p. 573 – 577; Khim. Geterotsikl. Soedin.; vol. 55; 6; (2019); p. 573 – 577,5;,
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Adding a certain compound to certain chemical reactions, such as: 915394-28-4, name is 2-Methyl-2-(3-nitrophenyl)propanenitrile, belongs to nitriles-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 915394-28-4, Application In Synthesis of 2-Methyl-2-(3-nitrophenyl)propanenitrile

2-Methyl-2-(3-nitrophenyl)-propionitrile (0.5g) was hydrogenated over 10% Pd-C in methanol (10ml) at atmospheric pressure until no further gas uptake was observed. The reaction mixture was then filtered over celite and concentrated to oil. Column chromatography over silica gel by eluting with ethyl acetate/pet ether (1:9) gave 2-(3- amino-phenyl)-2-methyl-propionitrile (0.35g, 83%) as an oil.

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-Methyl-2-(3-nitrophenyl)propanenitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; F2G LTD; WO2006/123145; (2006); A1;,
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Related Products of 1080-74-6, These common heterocyclic compound, 1080-74-6, name is 2-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile, 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 mixture of dye 6 (1.18 g, 3 mmol) and indandione (0.438 g,3 mmol) or malononitrile (0.198 g, 3 mmol) or 3-dicyanovinylindan-1-one (0.582 g, 3 mmol) in basic ethanol solution (7 ml) was stirredat room temperature overnight, filtered off and purified by columnchromatography on silica gel using CHCl3 as the eluent, affordingdyes a or b or c, respectively Yield: 66.6%. Mp 208e210 C. 1H NMR (600 MHz, CDCl3) 1.31 (t,6H, J ? 7.2 Hz, N(CH2CH3)2), 3.56 (q, 4H, J ? 7.2 Hz, N(CH2CH3)), 3.92(s, 3H, OCH3), 6.78 (d, 2H, J ? 9.6 Hz, AreH), 7.08 (d, 2H, J ? 7.2 Hz,AreH), 7.76 (m, 4H, AreH), 7.93 (d, 1H, J ? 7.2 Hz, AreH), 8.03 (m,2H, AreH), 8.66 (d, 1H, J ? 7.8 Hz, AreH), 8.75 (s, 1H, CH]C). 13CNMR (125 MHz, CDCl3) d 12.80, 45.42, 55.49, 69.77, 113.90, 114.44,114.78, 123.85, 125.11, 125.80, 126.01, 132.47, 134.36, 135.15, 136.96,138.06, 139.94, 143.91, 153.39, 160.77, 161.68, 170.58, 183.00, 188.07.IR n/cm 1 2211, 1746, 1697, 1595, 1519, 1214, 1102, 1065. HRMS calcdfor C33H26N6O2S: 570.68. Found: 570.95.

Statistics shows that 2-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile is playing an increasingly important role. we look forward to future research findings about 1080-74-6.

Reference:
Article; El-Shishtawy, Reda M.; Borbone, Fabio; Al-Amshany, Zahra M.; Tuzi, Angela; Barsella, Alberto; Asiri, Abdullah M.; Roviello, Antonio; Dyes and Pigments; vol. 96; 1; (2013); p. 45 – 51;,
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Some common heterocyclic compound, 185147-07-3, name is 2-Fluoro-3-methylbenzonitrile, molecular formula is C8H6FN, 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. name: 2-Fluoro-3-methylbenzonitrile

Intermediate 20: 3-Methyl-2-(2H-1 ,2,3-triazol-2-yl)benzonitrile.To a mixture of 2-fluoro-3-methylbenzonitrile (4.0 g, 29.6 mmol) and 2H-1 ,2,3- triazole (2.04 g, 29.6 mmol) in DMF (80 mL) was added potassium carbonate (8.26 g, 59.2 mmol). The resulting mixture was heated to 120 C for 2h. The mixture was cooled, diluted with water and extracted with EtOAc. The organic layers were combined, dried over Na2SO4, filtered and concentrated. The residue was purified by FCC (S1O2, ethyl acetate/hexanes, gradient 0-50%) to yield the title compound (1 .5 g, 26%). MS (ESI) mass calcd. for Ci0H8N4,184.2; m/z found, 185.1 [M+H]+. 1 H NMR (500 MHz, CDCI3): 7.95 (s, 2H), 7.66 (d, J = 7.7, 0.7 Hz, 1 H), 7.59 (d, J = 7.8, 0.6 Hz, 1 H), 7.50 (dd, J = 9.8, 5.7 Hz, 1 H), 2.20 (s, 3H).Intermediate 21 : 3-Methyl-2-(1 H-1 ,2,3-triazol-1 -yl)benzonitrile.The title compound was also a product of the synthesis of Intermediate 20 (3.1 g, 56%). MS (ESI) mass calcd. for CioH8N4, 184.2; m/z found, 185.1 [M+H]+. 1 H NMR (500 MHz, CDCI3) : 7.94 (d, J = 2.1 Hz, 1 H), 7.87 (d, J = 1 .1 Hz, 1 H), 7.71 – 7.67 (m, 1 H), 7.67 – 7.62 (m, 1 H), 7.56 (dd, J = 9.7, 5.8 Hz, 1 H), 2.17 (s 3H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 185147-07-3, its application will become more common.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50202; (2011); A1;,
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Related Products of 63069-50-1, A common heterocyclic compound, 63069-50-1, name is 4-Amino-3-fluorobenzonitrile, molecular formula is C7H5FN2, 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 mixture of 4-amino-3-fluorobenzonitrile (184 mmol) and NCS (276 mmol) in AcOH (300 mE) was stirred at 70 C. for approximately 16 h. The mixture was concentrated. H20 was added to the residue and the solid product was filtered oil and washed (sat. NaHCO3 and H20). To eliminate H20, THF was added and removed under reduced pressure to yield the desired product.

The synthetic route of 63069-50-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GALAPAGOS NV; Menet, Christel Jeanne Marie; Mammoliti, Oscar; Blanc, Javier; Orsulic, Mislav; Roscic, Maja; (81 pag.)US9440929; (2016); B2;,
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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 646-20-8 as follows. SDS of cas: 646-20-8

Step 1: Preparation of 2-Aminocyclohex- 1-en ecarbonitrile (I-7a) To cold toluene (20 mL) was added 60% NaH (720 mg, 18.0 mmol) slowly andfollowed by a solution of 1,5-dicyanopentane (2.1 mL, 16.37 mmol) in toluene (5 mL)slowly at 0C. The resulting mixture was refluxed for 4 h and cooled to roomtemperature. The reaction mixture was quenched with ethanol (2 mL), water (20 mL) 15 and acetic acid (2 mL). The organic layer was separated and aqueous layer wasextracted with ethyl acetate (3 x 20 mL). The combined organic layer was washed with brine, dried over anhydrous Na2SO4 and concentrated under reduced pressure. Water was added to the crude residue, then filtered and washed with hexane to afford 850 mg (42%) of 2-aminocyclohex-1-enecarbonitrile () as a pale brown solid.20 1H NMR (400 MHz, CDCI3): 64.21 (5, 2H), 2.2-2.12 (m, 4H), 1.75-1.55 (m, 4H).

According to the analysis of related databases, 646-20-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; NOVARTIS AG; JIRICEK, Jan; KONDREDDI, Ravinder Reddy; SMITH, Paul William; WO2014/37900; (2014); A1;,
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Adding a certain compound to certain chemical reactions, such as: 2338-75-2, name is 4-(Trifluoromethyl)phenylacetonitrile, belongs to nitriles-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 2338-75-2, Application In Synthesis of 4-(Trifluoromethyl)phenylacetonitrile

INTERMEDIATE 1; Step A; A solution of 4-trifluoromethylphenylacetonitrile (10 g, 49 mmol) in a mixture of ethanol (100 mL) and ammonium hydroxide (20 mL of a 29.3% aqueous solution) was hydrogenated over Raney nickel (1 g) for 16 h. The catalyst was removed by filtration through celite and the filtrate evaporated to dryness. The neat residue was added in a dropwise manner to trifluoroacetic anhydride (25 mL, 180 mmol) cooled at 0 C. and the resulting mixture stirred at 0 C. for 30 minutes. The reaction mixture was poured onto ice (250 mL) and the resulting mixture stirred for 30 minutes after which the precipitate was removed by filtration and air dried to give the product as a white solid (13.4 g, 90%).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Patent; Butora, Gabor; Goble, Stephen D.; Pastemak, Alexander; Yang, Lihu; Zhou, Changyou; Moyes, Christopher R.; US2008/81803; (2008); A1;,
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Electric Literature of 40497-11-8,Some common heterocyclic compound, 40497-11-8, name is Ethyl 2,3-dicyanopropanoate, molecular formula is C7H8N2O2, 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.

0.01 mol of ethyl 2,3-dicyanopropionate was added to a three-necked flask. The prepared diazonium salt solution was dropped into the flask. The reaction was complete for 2 h. Adding aqueous ammonia, adjust the pH to 9-10. Reaction at room temperature for 2h. After completion of the reaction, the reaction mixture was extracted with 40 mL of dichloromethane. The organic layer was washed with water (2 x 30 mL), washed with saturated sodium chloride solution (1 x 40 mL), and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give 1.18 g of product, yield 53.5%.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Ethyl 2,3-dicyanopropanoate, its application will become more common.

Reference:
Patent; Nanjing University of Technology; Wan, Rong; Wu, Shaohua; Guo, Chunwei; Guan, Xilin; Chen, Fuli; Han, Zhenyu; Fu, Xiaohuan; (14 pag.)CN105601632; (2016); A;,
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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. 198633-76-0, name is 2-Fluoro-6-methylbenzonitrile, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 198633-76-0

To a cooled (0 0C) solution of 2-fluoro-6-methylbenzonitrile (5.0 g, 37 mmol) in 100 r¡ãL of concentrated H2SO4 was added NBS (6.93 g, 38.9 mmol). Then the mixture was stirred at 0 0C for 3 hrs and poured into ice-water (1 L). The solution was extracted three times with EtOAc(200 mL) and the combined orgianc layers were washed with water and brine, dried over anhydrous sodium sulfate, filtered and concentrated. The residue was purified by silica gel fash chromatography to give 3-bromo-6-fluoro-2-methylbe?zonitrile.1H-NMR (400 MHz, CDCl3) S ppm 7.71-7.74 (m, IH), 6.95 (t, J=8.6 Hz, IH), 2.62 (s, 3H).

According to the analysis of related databases, 198633-76-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; MERCK SHARP &; DOHME CORP.; PASTERNAK, Alexander; SHAHRIPOUR, Aurash; TANG, Haifeng; TEUMELSAN, Nardos, H.; YANG, Lihu; ZHU, Yuping; WALSH, Shawn, P.; WO2010/129379; (2010); A1;,
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Application of 1147558-43-7, 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. 1147558-43-7, name is 4-Amino-3-chloro-5-fluorobenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

3-Chloro-5-fluoro-4-nitrobenzonitrile Sodium perborate tetrahydrate (131 g, 851 mmol) in acetic acid (200 mL) was heated to 60 C. A solution of 4-amino-3-chloro-5-fluorobenzonitrile (29.02 g, 170 mmol) in acetic acid (500 ml.) was added dropwise and the reaction was stirred at 60 C for 16 h. The LCMS the indicated the reaction showed -50% conversion. Additional sodium perborate tetrahydrate (14.4 g) was added and the reaction stirred at 70 C for 2 h. Then additional sodium perborate tetrahydrate (70 g) was added and the reaction was stirred at 80 C for 5 h, followed by RT for 2 days. The reaction was then poured into ice water and extracted with EtOAc (3x). The combined organic extracts were washed with H20 (2x), brine, dried over MgS04 and concentrated. When most of the acetic acid was evaporated, water was added to the residue. The orange precipitate was collected by filtration, washed with H20 and air dried to give the crude product as an orange solid. NMR showed the product contaminated with -10% of starting material. This product was used without any further purification.

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-Amino-3-chloro-5-fluorobenzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; GLAXOSMITHKLINE LLC; BROOKS, Carl; CHEUNG, Mui; EIDAM, Hilary, Schenck; GOODMAN, Krista, B.; HAMMOND, Marlys; HILFIKER, Mark, A.; PATTERSON, Jaclyn, R.; STOY, Patrick; YE, Guosen; WO2012/174342; (2012); A1;,
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