Category: 141-30-0

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred suspension of 2,2-dimethylpropanoic acid (0.288 g, 2.82 mmol) and 3,6-dichloropyridazine (0.299 g, 2 mmol) in water (3 ml_) at 55C was added AgN03 (0.068 g, 0.4 mmol) as a solution in water (0.3 ml_) followed by TFA (0.046 g, 0.4 mmol). (NH4)2S208 (0.778 g, 3.19 mmol) was added dropwise as a solution in water (1.5 ml_). The reaction mixture was then heated to 75C for 1 h. Upon cooling the reaction mixture was poured into NaHC03 solution (15 ml_) and extracted with CH2CI2 (15 ml) twice. The combined organic fractions were dried over MgS04, filtered and the solvent removed by evaporation in vacuo. Purification by silica gel column chromatography, 3:1 CH2CI2/hexane elution, yielded intermediate 1 (0.33 g, 80%). LCMS (ESI): Found 205.0 [M+Hf.

141-30-0, 141-30-0 3,6-Dichloropyridazine 67331, apyridazine compound, is more and more widely used in various fields.

Reference£º
Patent; KARUS THERAPEUTICS LIMITED; SHUTTLEWORTH, Stephen Joseph; GATLAND, Alice Elizabeth; FINNEMORE, Daniel John; ALEXANDER, Rikki Peter; SILVA, Franck; CECIL, Alexander; (233 pag.)WO2019/166824; (2019); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture 10.0 g (67.1 mmol) of 3,6-dichloropyridazine and 40 ml of hydroiodic acid (57% in water) is stirred for 24 hours at 700C. After cooling down the reaction mixture is poured on ice, neutralized with 120 ml of potassium hydroxide solution (20% in water) and filtered. The residue is washed with 1000 ml of water, 50 ml of sodium thiosulfate solution (10 % in water) and 10 ml of n-hexane. The residue is recrystallised from EtOAc.Yield: 9.4 g (42% of theory),

141-30-0, The synthetic route of 141-30-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GmbH; BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG; WO2008/71646; (2008); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.141-30-0,3,6-Dichloropyridazine,as a common compound, the synthetic route is as follows.

To a 1000 mL single-necked round bottom flask was added 3,6-dichloropyridazine (29.80 g, 200 mmol), hydrazine hydrate (15.00 g, 300 mmol), DMF and acetonitrile (280 ml of DMF). The reaction mixture was stirred at 90 C for 10 hours. TLC and GC were determined to complete the reaction. After the reaction, the solvent was removed by steaming, get the crude product, the pure product was isolated by silica gel column chromatography 3-chloro-6-hydrazinopyridazine, after drying, the calculated yield was 83.65%. Purity 98.69% (HPLC)., 141-30-0

The synthetic route of 141-30-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Shandong Youbang Biochemical Technology Co., Ltd.; Geng Xuanping; Lai Chao; Lai Ziteng; Lai Xinsheng; (4 pag.)CN106632069; (2017); A;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.141-30-0,3,6-Dichloropyridazine,as a common compound, the synthetic route is as follows.

Synthesis of Compound J.1. A flask was charged with 3,6-dichloropyridazine (1.49 g, 0.01 mol, 1.0 equiv), silver nitrate (0.17 g, 0.001 mol, 0.1 equiv), water (30 mL), pivalic acid (3.57 g, 0.035 mol, 3.5 equiv), and sulfuric acid (1.6 mL, 0.03 mol, 3.0 equiv). The mixture was heated to 70 C. and a solution of ammonium persulfate (2.28 g, 0.01 mol, 1.0 equiv) in water (10 mL) was added dropwise over ten minutes. The reaction was stirred at 70 C. for one hour and then cooled to RT. The reaction mixture was poured into ice water and then adjusted to pH 8 with aqueous ammonium hydroxide. The aqueous mixture was extracted with CH2Cl2 (2¡Á250 mL). The combined organic extracts were filtered through a cotton plug, washed with aqueous 1 N NaOH (70 mL), dried over anhydrous MgSO4 and concentrated under reduced pressure. Purification by flash column chromatography (20% EtOAc/hexanes) afforded the title compound (1.32 g, 64%) as a white solid. 1H NMR: (CDCl3, 400 MHz) delta: 7.5 (s, 1H), 1.5 (s, 9H); Rf=0.5 (80% EtOAc/hexanes)., 141-30-0

As the paragraph descriping shows that 141-30-0 is playing an increasingly important role.

Reference£º
Patent; Sunesis Pharmaceuticals, Inc; US2009/5359; (2009); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a microwave vial were mixed: 1,1-dimethylethyl 1-piperazinecarboxylate (135 mg, 0.725 mmol, available from Fluke), 3,6-dichloropyridazine (90 mg, 0.604 mmol, available from Alfa Aesar) and DIPEA (0.137 mL, 0.785 mmol) in Tert-Butanol (2 mL). The reaction was stirred and heated in an Emrys Optimizer microwave at 100 C. for 20 mins then for 30 mins at 150 C. The reaction mixture was partitioned between EtOAc (20 mL) and water (20 mL) and the organic layer washed with brine (20 mL) before being dried through an hydrophobic frit and concentrated. The residue was dissolved in DCM and purified by SP4 on a 12+M silica cartridge using a gradient of 10-50% EtOAc in cyclohexane. The appropriate fractions were collected and concentrated to yield the desired product as a white solid, 1,1-dimethylethyl 4-(6-chloro-3-pyridazinyl)-1-piperazinecarboxylate (114.2 mg). LCMS (Method C): Rt=0.85, MH+=299

141-30-0, 141-30-0 3,6-Dichloropyridazine 67331, apyridazine compound, is more and more widely used in various fields.

Reference£º
Patent; Demont, Emmanuel Hubert; Garton, Neil Stuart; Gosmini, Romain Luc Marie; Hayhow, Thomas George Christopher; Seal, Jonathan; Wilson, David Matthew; Woodrow, Michael David; US2012/208798; (2012); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 2. 6-4-f4- (5-Chloro-lH-indole-2-sulphonyl)-piperazine-l-carbonvl]-phenyl}-2- (2-dimethylamino-ethvl)-2H-pyridazin-3-one Step A. To a microwave vial was added 3,6-dichloropyridazine (645mg, 4.33mmol), potassium acetate (425 mg, 4.33 mmol) and 9 mL acetic acid/water (5: 1). The reaction mixture was heated at 140 C for 70 minutes. The solvent was evaporated and the crude was purified by preparative HPLC using a gradient of acetonitrile/5 % acetonitrile- water phase containing 0.1 M ammonium acetate, to give 436 mg of 6-chloro-2H- pyridazin-3-one (77 % yield). 1H NMR (400 MHz ; methanol-d4 as solvent and internal reference) delta (ppm) 6.96 (d, 1H), 7.45 (d, 1H)., 141-30-0

141-30-0 3,6-Dichloropyridazine 67331, apyridazine compound, is more and more widely used in various fields.

Reference£º
Patent; ASTRAZENECA AB; WO2005/65688; (2005); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.141-30-0,3,6-Dichloropyridazine,as a common compound, the synthetic route is as follows.

Vl.i .a3-Benzyloxy-6-chloro-pyridazine; 33.92 g (205.5 mmol) 3,6-Dichloro-pyridazine are dissolved in 100 ml benzyl alcohol and30.06 g (231.0 mmol) sodium benzylate are added. The mixture is stirred for 30 minutes atRT. After that time the mixture is slowly poured into ice water, the precipitate is filtered off and washed with water. The product is dried at 80C.Yield: 1 1.5 g (81 % of theory), Rf value: 0.60 (silica gel, cyclohexane/tehyl acetate = 2:1 )EII Mass spectrum: m/z = 243/245 [M+Na]+, 141-30-0

As the paragraph descriping shows that 141-30-0 is playing an increasingly important role.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG; WO2007/48802; (2007); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

a. To 42.1 g 3,6-dichloro pyridazine in acetone 10.5 g of NaI followed by 105 mL HI catalyst (Aldrich 21002-1) was added and left at room temperature for three days, upon workup a quantitative yield of 3,6-diiodopyridazine was obtained.

141-30-0, As the paragraph descriping shows that 141-30-0 is playing an increasingly important role.

Reference£º
Patent; Sterling Winthrop Inc.; US5514679; (1996); A;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred suspension of 2,2-dimethylpropanoic acid (0.288 g, 2.82 mmol) and 3,6-dichloropyridazine (0.299 g, 2 mmol) in water (3 ml_) at 55C was added AgN03 (0.068 g, 0.4 mmol) as a solution in water (0.3 ml_) followed by TFA (0.046 g, 0.4 mmol). (NH4)2S208 (0.778 g, 3.19 mmol) was added dropwise as a solution in water (1.5 ml_). The reaction mixture was then heated to 75C for 1 h. Upon cooling the reaction mixture was poured into NaHC03 solution (15 ml_) and extracted with CH2CI2 (15 ml) twice. The combined organic fractions were dried over MgS04, filtered and the solvent removed by evaporation in vacuo. Purification by silica gel column chromatography, 3:1 CH2CI2/hexane elution, yielded intermediate 1 (0.33 g, 80%). LCMS (ESI): Found 205.0 [M+Hf.

141-30-0, 141-30-0 3,6-Dichloropyridazine 67331, apyridazine compound, is more and more widely used in various fields.

Reference£º
Patent; KARUS THERAPEUTICS LIMITED; SHUTTLEWORTH, Stephen Joseph; GATLAND, Alice Elizabeth; FINNEMORE, Daniel John; ALEXANDER, Rikki Peter; SILVA, Franck; CECIL, Alexander; (233 pag.)WO2019/166824; (2019); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem

141-30-0, 3,6-Dichloropyridazine is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 3,6-dichloropyridazine (10 g, 67 mmol), sodium iodide (13.5 g, 90 mmol), and 45% aq. H1 (60 mmol) was stirred at 40 C. for 4 h. The reaction mixture was cooled to room temperature and poured into cold NaOH solution. The mixture (pH>9) was stirred for 10 min and extracted with (100 mL*3). The combined organic solution was washed with brine, dried and concentrated in vacuo to give 6-chloro-3-iodopyridazine 13.6 g, 85%.

141-30-0, The synthetic route of 141-30-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Kalypsys, Inc.; US2005/234046; (2005); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem