Tag: M.W=100-200

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 33050-38-3, name is 3,6-Dichloro-[1,2,4]triazolo[4,3-b]pyridazine, A new synthetic method of this compound is introduced below., Quality Control of 3,6-Dichloro-[1,2,4]triazolo[4,3-b]pyridazine

To a suspension of 3,6-dichloro-[1,2,4]triazolo[4,3-b]pyridazine (0.5 g, 1.8 mmol), 4-fluoro-N-(2-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)benzenesulfonamide (0.8 g, 2.2 mmol) and Pd(dppf)Cl2.CH2Cl2 (0.15 g, 0.18 mmol) in DME (20 mL) was added a solution of Cs2CO3 (1.2 g, 3.6 mmol) in H2O (2 mL). The resulted mixture was stirred at 70 C. under N2 atmosphere for 12 hours and concentrated in vacuo. The residue was purified by a silica gel column chromatography (PE/EtOAc (v/v)=1/2) to give the title compound as a pale yellow solid (0.5 g, 64%). MS (ESI, pos. ion) m/z: 435.0 [M+H]+; 1H NMR (400 MHz, CDCl3): delta 10.20 (s, 1H), 8.71 (d, J=2.2 Hz, 1H), 8.46 (d, J=9.8 Hz, 1H), 8.27 (d, J=2.2 Hz, 1H), 8.04 (d, J=9.8 Hz, 1H), 7.90-7.87 (m, 2H), 7.42-7.38 (m, 2H), 3.79 (s, 3H).

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; Calitor Sciences, LLC; Xi, Ning; US2014/134133; (2014); A1;,
Chloride – Wikipedia,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 4152-90-3, name is (3-Chlorophenyl)methanamine, A new synthetic method of this compound is introduced below., name: (3-Chlorophenyl)methanamine

5-[3-(3-Chloro-benzylamino)-phenyl]-5-methyl-5,6-dihydro-2H-[l,4]oxazin-3-ylamine a) (RS)- (3-Chloro-benzyl)-[3-(5-methoxy-3-methyl-3,6-dihydro-2H-[l,4]oxazin-3-yl)- phenyl] -amineA dried pressure tube was charged consecutively under a nitrogen atmosphere with a solution of (RS)-3-(3-bromo-phenyl)-5-methoxy-3-methyl-3,6-dihydro-2H [l,4]oxazine (150 mg, 0.5 mmol) in toluene (5 ml), sodium tert-butylate (157 mg, 1.6 mmol), 2-di-tert-butylphosphino-2′,4′,6′- triisopropylbiphenyl (ie/t-butyl-x-phos) (23 mg, 0.1 mmol), tris(dibenzylideneacetone)- dipalladium chloroform complex (17 mg), and 3-chlorobenzylamine (154 mg, 1.1 mmol). The sealed pressure tube was heated at 100 C for 15 hours. After cooling, the reaction mixture was evaporated to dryness and directly purified by chromatography on an Isolute flash NH2 column using a gradient of heptane/ethyl acetate = 100/0 to 50/50 as the eluent. 85 mg (47%) of (RS)- (3-chloro-benzyl)-[3-(5-methoxy-3-methyl-3,6-dihydro-2H-[l,4]oxazin-3-yl)-phenyl]-amine were obtained as a yellow oil. Mass (calculated) C19H21CIN2O2 [344.844]; (found) [M+H]+ = 345.

The synthetic route of 4152-90-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; SIENA BIOTECH S.P.A; ANDREINI, Matteo; GABELLIERI, Emanuele; GUBA, Wolfgang; HILPERT, Hans; MAUSER, Harald; MAYWEG, Alexander V.; NARQUIZIAN, Robert; POWER, Eoin; TRAVAGLI, Massimiliano; WOLTERING, Thomas; WOSTL, Wolfgang; WO2012/98064; (2012); A1;,
Chloride – Wikipedia,
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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 2106-04-9 as follows. HPLC of Formula: C6H5ClFN

Example 3; Step 1; A round bottom flask was charged with 1 eq of 3-chloro-2-fluoroaniline (3A), 1-methyl-2-pyrrolidinone (about 1.5 M 3A in NMP), 2.2 eq of sodium cyanide, and 1.35 eq of nickel(II) bromide at RT under N2. The concentration was halved by the introduction of additional NMP under N2 and the solution was gently warmed to 200+/-5 C. and stirred for 4 days under N2. The reaction mixture was allowed to cool to room temperature. The reaction mixture was diluted with 30 volumes of tert-butyl methyl ether (MTBE) and filtered through celite. The celite pad was then rinsed with 10 volumes of MTBE. The organics were washed with 40 volumes of brine, 2×40 volumes of water and 40 volumes of brine. The combined organics were dried over sodium sulfate and concentrated to afford a brown solid, which was dried under vacuum (-30 in Hg) at 40 C. for 8 hours to afford the compound of Formula 3B (71% yield).

According to the analysis of related databases, 2106-04-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Morgan, Bradley Paul; Muci, Alex; Lu, Pu-Ping; Kraynack, Erica Anne; Tochimoto, Todd; Morgans, David J.; US2006/14761; (2006); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

These common heterocyclic compound, 6775-78-6, name is 6-Chloroimidazo[1,2-b]pyridazine, 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. Computed Properties of C6H4ClN3

478 mg (3.1 1 mmol) of 6-chloroimidazo[1 ,2-b]pyridazine were introduced into 10 mL of chloroform under argon and, while cooling in ice, 664 mg (3.73 mmol) of N- bromosuccuinimide were added. After the addition was complete, the reaction mixture was stirred at room temperature overnight. The reaction mixture was then mixed with water and ethyl acetate and, after addition of saturated sodium bicarbonate solution, the phases were separated. The aqueous phase was extracted three more times with ethyl acetate. The combined organic phases were then washed with brine and dried over sodium sulfate. In the final removal of the solvent in vacuo, the desired product was isolated in quantitative yield in the form of an amorphous white solid which was employed without further chromatographic purification in subsequent reactions.

The synthetic route of 6-Chloroimidazo[1,2-b]pyridazine has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; EIS, Knut; PUeHLER, Florian; ZORN, Ludwig; SCHULZE, Volker; SUeLZLE, Detlev; LIENAU, Philip; HAeGEBARTH, Andrea; PETERSEN, Kirstin; BOeMER, Ulf; WO2013/149909; (2013); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 106131-61-7, name is 3,6-Dichloro-1,2,4,5-tetrazine, A new synthetic method of this compound is introduced below., Application In Synthesis of 3,6-Dichloro-1,2,4,5-tetrazine

General procedure: To a solution of DIPEA (2.1 mmol) in acetonitrile (150 mL) which was preheated to 70 C was added dropwise a solution of 3,6-dihydroxyphthalimide derivatives 1a-e (1 mmol) and 3,6-dichlorotetrazine (2, 1 mmol) in acetonitrile (25 mL) during 25 min. After being stirred for another 5 min, the reaction was quenched by cooling down the mixture to ambient temperature and adding water (200 mL). The resulting mixture was neutralized with dilute hydrochloric acid (1 M) and extracted with EtOAc (3 × 150 mL). The combined organic solution was washed with brine (3 × 200 mL) and then dried over anhydrous Na2SO4. After filtration and concentration, the residue was chromatographed on a silica gel column using a mixture of DCM and EtOAc (v/v = 100:1) as an eluent to give product 3a-e. 3a: 140 mg, yield 42%, red solid, mp 275 C (decomp.);1H NMR (400 MHz, acetone-d6, 25 C) delta 8.00 (s, 6H),7.20-7.34 (m, 15H); 13C NMR (101 MHz, acetone-d6, 25 C) delta168.8, 164.4, 147.1, 132.2, 132.1, 129.6, 128.8, 127.5, 125.6;IR (KBr, cm-1) nu: 3078, 1777, 1724, 1494, 1384, 1230, 1115,955; HRMS-APCI: [M + H]+ calcd for C48H22N15O12,1000.1567; found, 1000.1553; anal. calcd for C48H21N15O12:C, 57.66; H, 2.12; N, 21.01; found: C, 57.71; H, 2.08; N, 20.70.

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; Gu, Meng-Di; Lu, Yao; Wang, Mei-Xiang; Beilstein Journal of Organic Chemistry; vol. 15; (2019); p. 1976 – 1983;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 54788-38-4, name is 2-Chloro-4-methoxy-1-methylbenzene, A new synthetic method of this compound is introduced below., Recommanded Product: 54788-38-4

General procedure: To anhydrous THF (6.4 mL) in a dry round-bottom flask was added nickel(II)bromide (279 mg, 1.28 mmol), zinc powder (250 mg, 3.83 mmol), and triphenylphosphine (1.68 g, 6.39 mmol). The mixture was heated to 50 C and stirred for 30 min. The selected o-chlorotoluene (8a or 8b, 12.78 mmol) was added, the temperature raised to 60 C, and the reaction was tightly capped and allowed to stir 30 min, then potassium cyanide (1.66 g, 25.5 mmol) was added over the course of 5 h in 2 equal portions. The mixture was allowed to stir an additional 16 h. Water was added to quench the reaction, and the suspension extracted 3× with ether. The resulting organic layer was washed with H2O and brine, dried over MgSO4, filtered, and concentrated to a heterogeneous mixture of white crystals and clear oil. The residue was diluted with 10 mL of toluene, then methyl iodide (997 mg, 7.02 mmol) was added and allowed to stir 16 h at room temperature. The resulting white crystals were removed via vacuum filtration. The filtrate was concentrated in vacuo to a clear oil. Flash chromatography with 2% EtOAc/hex delivered the pure product in 68-90% yield.

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; Yestrepsky, Bryan D.; Xu, Yuanxi; Breen, Meghan E.; Li, Xiaoqin; Rajeswaran, Walajapet G.; Ryu, Jenny G.; Sorenson, Roderick J.; Tsume, Yasuhiro; Wilson, Michael W.; Zhang, Wenpeng; Sun, Duxin; Sun, Hongmin; Larsen, Scott D.; Bioorganic and Medicinal Chemistry; vol. 21; 7; (2013); p. 1880 – 1897;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 870-24-6, name is 2-Chloroethanamine hydrochloride belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 870-24-6

In a 500 ml four-necked flask,343 parts of dimethylformamide,31.6 parts of triethylamine and 2-chloroethylamine hydrochloride(Manufactured by Tokyo Chemical Industry Co., Ltd.) 33.2 parts, and the mixture was stirred for 10 minutes. 49.6 parts of p-toluenesulfonyl chloride (manufactured by Tokyo Chemical Industry Co., Ltd.)Was added little by little so that the liquid temperature did not exceed 20 C.,And the mixture was stirred at room temperature for 3 hours.The reaction solution was poured into cooled 5% aqueous hydrochloric acid,After stirring for 15 minutes, the precipitated crystals were collected by filtration, washed,By drying,33.8 parts of a dye intermediate represented by the following formula (101) was obtained.

The synthetic route of 870-24-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; NIPPON KAYAKU COMPANY LIMITED; MIFUJI, AKIHIRO; SUZUKI, SAORI; MORITA, RYOUTARO; (29 pag.)JP2018/53152; (2018); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 98446-49-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 98446-49-2 name is 2,4-Dichloro-5-methoxyaniline, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

EXAMPLE 68 4-(2,4-Dichloro-5-methoxyphenylamino)benzo[4,5]thieno[3,2-b]pyridine-3-carbonitrile A mixture of 230 mg (1.2 mmol) of 2,4-dichloro-5-methoxyaniline (WO 8501939A1) and 48 mg (1.2 mmol) of 60% sodium hydride in mineral oil in 10 mL of tetrahydrofuran is heated at reflux temperature. The reaction mixture is cooled and 200 mg (0.82 mmol) of 4-chlorobenzo[4,5]thieno[3,2-b]pyridine-3-carbonitrile is added. The mixture is heated at reflux for 4 hours, then cooled to room temperature and partitioned between ethyl acetate and water. The organic layer is washed with water, dried over magnesium sulfate, filtered and concentrated in vacuo. Diethyl ether is added to the residue and the resultant solid is collected by filtration and purified by column chromatography, eluding with 3:1 hexane/ethyl acetate, to provide 89 mg (27%) of a white solid, mp 234-236 C. 1H-NMR (DMSO-d6): delta 3.86 (s, 3H), 7.21 (s, 1H), 7.56-7.67 (m, 2H), 7.78 (s, 1H), 8.07 (d, 1H), 8.37 (d, 1H), 8.79 (s, 1H), 9.79 (s, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2,4-Dichloro-5-methoxyaniline, and friends who are interested can also refer to it.

Reference:
Patent; American Home Products Corporation; US2001/51620; (2001); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 72235-58-6, 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 72235-58-6 as follows.

Example 7; 3- [5,6-Bis(methyloxy)-2-pyridinyll -N- [(4-chloro-3-fluorophenvDmethyll -2,4-dioxo-l ,2,3,4- tetrahvdrothieno[3,2-Patent; GLAXOSMITHKLINE LLC; SCHULZ, Mark, James; WANG, Younghui; GHERGUROVICH, Jonathan M.; WO2010/59555; (2010); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 106-39-8, name is 1-Bromo-4-chlorobenzene, A new synthetic method of this compound is introduced below., Application In Synthesis of 1-Bromo-4-chlorobenzene

General procedure: A mixture of aryl halide (1 mmol), alkene (1.2 mmol), K2CO3(2 mmol) and MNPs-Mel-Pd (0.02 g) was stirred in DMF at 100 Cand the progress of the reaction was monitored by TLC. Aftercompletion of the reaction, the catalyst was separated using anexternal magnet, the mixture was cooled to room temperature andthe product was solidified by addition of water to the mixture andpure products were obtained in yields of 76-99%. The chromatographictechniques were not used to isolate the products.

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; Bodaghifard, Mohammad Ali; Journal of Organometallic Chemistry; vol. 886; (2019); p. 57 – 64;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics