Category: 181123-11-5

Related Products of 181123-11-5, Adding some certain compound to certain chemical reactions, such as: 181123-11-5, name is 5-Chloro-2-cyano-3-nitropyridine,molecular formula is C6H2ClN3O2, 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 181123-11-5.

Step 2;. Preparation of 3-Amino-5-chloro-pyridine-2-carboxylic acid methyl ester; Heat at 90 C a mixture of 5-chloro-3-nitro-pyridine-2-carbonitrile (1.0 g, 5.90 mmol) and tin (II) chloride (6.79 g, 29.5 mmol) in ethanol (10 mL) for 3 h. Evaporate the solvent under reduced pressure, add a solution of 35% hydrochloric acid (5 mL) and reflux the mixture for 6 h. Concentrate the reaction in vacuo to dryness and dissolve the resulting residue in methanol (20 mL). Add thionyl chloride (0.95 mL, 7.08 mmol) at room temperature and heat the mixture at 90 C for 24 h. Remove the solvent under reduced pressure, add ethyl acetate, and wash with a saturated solution of sodium bicarbonate. Separate the organic layer, dry over sodium sulfate, filter, and concentrate under reduced pressure. Purify the residue using silica gel chromatography, eluting with ethyl acetate to afford the title compound (0.77 g, 70%). H-NMR (CDCl3, 3 00 MHz): 8 3.97 (s, 3 H) ; 5.85 (bs, 2 H) ; 7.06 (d, J = 2.0 Hz, 1H), 7.97 (d, J = 2.0 Hz, 1H).

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. 181123-11-5, 5-Chloro-2-cyano-3-nitropyridine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ELI LILLY AND COMPANY; WO2005/97805; (2005); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 181123-11-5 , The common heterocyclic compound, 181123-11-5, name is 5-Chloro-2-cyano-3-nitropyridine, molecular formula is C6H2ClN3O2, 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 2;. Preparation of 3-Amino-5-chloro-pyridine-2-carboxylic acid methyl ester; Heat at 90 C a mixture of 5-chloro-3-nitro-pyridine-2-carbonitrile (1.0 g, 5.90 mmol) and tin (II) chloride (6.79 g, 29.5 mmol) in ethanol (10 mL) for 3 h. Evaporate the solvent under reduced pressure, add a solution of 35% hydrochloric acid (5 mL) and reflux the mixture for 6 h. Concentrate the reaction in vacuo to dryness and dissolve the resulting residue in methanol (20 mL). Add thionyl chloride (0.95 mL, 7.08 mmol) at room temperature and heat the mixture at 90 C for 24 h. Remove the solvent under reduced pressure, add ethyl acetate, and wash with a saturated solution of sodium bicarbonate. Separate the organic layer, dry over sodium sulfate, filter, and concentrate under reduced pressure. Purify the residue using silica gel chromatography, eluting with ethyl acetate to afford the title compound (0.77 g, 70%). H-NMR (CDCl3, 3 00 MHz): 8 3.97 (s, 3 H) ; 5.85 (bs, 2 H) ; 7.06 (d, J = 2.0 Hz, 1H), 7.97 (d, J = 2.0 Hz, 1H).

The synthetic route of 181123-11-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ELI LILLY AND COMPANY; WO2005/97805; (2005); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 181123-11-5, name is 5-Chloro-2-cyano-3-nitropyridine, the common compound, a new synthetic route is introduced below. Product Details of 181123-11-5

To a suspension of 5-chloro-2-cyano-3-nitropyridine (1.274 mL, 10.9 mmol) in water (22 mL) was added 28% aqueous ammonium hydroxide (3.94 mL, 28.3 mmol), and the reaction was stirred at RT for 20 minutes. Sodium hydrosulfite (2.68 mL, 32.7 mmol) was added, and the reaction mixture was stirred at RT for 70 minutes. The yellow precipitate was collected by vacuum filtration to provide the title compound (1.097 g, 6.39 mmol) as yellow solid. 1H-NMR (400 MHz, DMSO-d6): delta 7.88 (br. s, 1H), delta 7.73 (s, 1H), delta 7.39 (br. s, 1H), delta 7.23 (s, 1H), delta 7.06 (br. s, 2H). LC/MS (ESI+) m/z=172 (M+H).

The synthetic route of 181123-11-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; LEWIS, Richard T.; ALLEN, Jennifer R.; BROWN, James; GUZMAN-PEREZ, Angel; HUA, Zihao; JUDD, Ted; LIU, Qingyian; OLIVIERI, Philip R.; ROMERO, Karina; SCHENKEL, Laurie; STELLWAGEN, John; WHITE, Ryan; US2015/38497; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 181123-11-5, name is 5-Chloro-2-cyano-3-nitropyridine. This compound has unique chemical properties. The synthetic route is as follows. Computed Properties of C6H2ClN3O2

Step 1: 3-Amino-5-chloropicolinamide To a suspension of 5-chloro-2-cyano-3-nitropyridine (1.274 mL, 10.9 mmol) in water (22 mL) was added 28% aqueous ammonium hydroxide (3.94 mL, 28.3 mmol), and the reaction was stirred at RT for 20 minutes. Sodium hydrosulfite (2.68 mL, 32.7 mmol) was added, and the reaction mixture was stirred at RT for 70 minutes. The yellow precipitate was collected by vacuum filtration to provide the title compound (1.097 g, 6.39 mmol) as yellow solid. 1H-NMR (400 MHz, DMSO-d6): delta 7.88 (br. s, 1H), delta 7.73 (s, 1H), delta 7.39 (br. s, 1H), delta 7.23 (s, 1H), delta 7.06 (br. s, 2H). LC/MS (ESI+) m/z=172 (M+H).

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Reference:
Patent; MINATTI, Ana Elena; LOW, Jonathan D.; ALLEN, Jennifer R.; CHEN, Jian; CHEN, Ning; CHENG, Yuan; JUDD, Ted; LIU, Qingyian; LOPEZ, Patricia; QIAN, Wenyuan; RUMFELT, Shannon; RZASA, Robert M.; TAMAYO, Nuria A.; XUE, Qiufen; YANG, Bryant; ZHONG, Wenge; US2014/249104; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem