Tag: M.W=100-200

Application of 452-83-5, 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. 452-83-5, name is 2-Chloro-5-fluoroaniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

A solution of ethyl 4,4,4-trifluoroacetoacetate (commercially available, 4 mL, 27.3 mmol, 1.05 eq.) in polyphosphoric acid (22 mL) was heated to 1000C. 2-chloro-5- fluoroaniline (3.78 g, 26.0 mmol, 1 eq.) was added slowly to the stirred hot solution. The resulting reaction mixture was further heated to 1500C and then stirred at that temperature overnight (approximately 18 hours). The reaction was cooled to room temperature and water was added carefully. The resulting light brown precipitate was collected by vacuum filtration, washed with water and dissolved in ethyl acetate. The ethyl acetate solution was washed with brine, dried over anhydrous MgSO4 and concentrated on a rotary evaporator. The crude product was purified by flash chromatography on silica gel using hexane/ethyl acetate to give 3.54 g (51% yield) of the desired product as an off- white solid; MP = 141-142; MS (ES) m/z (relative intensity): 266 (M+H)+ (100).

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-Chloro-5-fluoroaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; WYETH; WO2007/146072; (2007); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 918538-05-3, name is 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine, This compound has unique chemical properties. The synthetic route is as follows., name: 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine

General procedure: To a solution of 2,4-dichlorofuro[3,2-d]pyrimidine (la) (0.71 g, 3.74 mmol; CAS 956034- 07-4) in 2-Propanol (20 mL) was added DIPEA (1.63 mL, 9.36 mmol), 1-methyl-1H-imidazol-4-amine hydrochloride (0.5 g, 3.74 mmol) and heated at reflux for 24 h. The reaction mixture was concentrated in vacuum to dryness and the residue obtained was triturated with water. The solid obtained was collected by filtration and dried in vacuum to afford 2-chloro-N-(l-methyl-lH-imidazol-4-yl)furo[3,2-d]pyrimidin-4-amine (lb) (550 mg,59 % yield) as brown solid; NMR (300 MHz, DMSO-^) delta 10.89 (s, 1H, D20exchangeable), 8.35 (d, J = 2.1 Hz, 1H), 7.52 (d, J = 1.6 Hz, 1H), 7.39 (d, J = 1.3 Hz, 1H), 7.03 (d, J = 2.1 Hz, 1H), 3.71 (s, 3H); MS (ES+): 250.3 (M+l), 272.3, 274.3 (M+Na), (ES-): 248.2 (M-l).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 918538-05-3.

Reference:
Patent; BIOCRYST PHARMACEUTICALS, INC.; KOTIAN, Pravin, L.; BABU, Yarlagadda, S.; KUMAR, V., Satish; ZHANG, Weihe; LU, Peng-Cheng; RAMAN, Krishnan; (747 pag.)WO2018/232094; (2018); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 6276-54-6, The chemical industry reduces the impact on the environment during synthesis 6276-54-6, name is 3-Chloropropan-1-amine hydrochloride, I believe this compound will play a more active role in future production and life.

Example IVa-1; 3-Chloro-N-[(6-chloropyridin-3-yl)methyl]propan-1-amine (R’CH2CH2CH2-Cl, A=6-chloropyrid-3-yl) (cf. B. Latli et al. J. Med. Chem. 1999, 42, 2227-2234); 16.20 g (100 mmol) of 2-chloro-5-(chloromethyl)pyridine, 16.90 g (130 mmol) of 3-chloropropan-1-amine hydrochloride and 36.24 ml (260 mmol) of triethylamine in 200 ml acetonitrile stirred at 60 C. for 20 hours. After addition of 30.67 g (230 mmol) of 30 percent strength aqueous sodium hydroxide solution, the reaction mixture is concentrated under reduced pressure and the residue is extracted with chloroform. Concentration of the extract under reduced pressure gives 19.03 g (87% of theory) of 3-chloro-N-[(6-chloropyridin-3-yl)methyl]propan-1-amine which can be used without further purification for the next reaction (cf. Ex. II-2).1H-NMR (CD3CN): delta [ppm]=1.85-2.05 (m, 2H), 2.69 (t, 2H), 3.65 (t, 2H), 3.75 (s, 2H), 7.32 (d, 1H), 7.71 (dd, 1H), 8.30 (d, 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, 3-Chloropropan-1-amine hydrochloride, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Bayer CropScience AG; US2009/181947; (2009); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 106-39-8, 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. 106-39-8 name is 1-Bromo-4-chlorobenzene, 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.

General procedure: A mixture of iodobenzene (2.0 mmol), potassium 5-methyl-1,3,4-oxadiazole-2-thiolate (1) (3.0 mmol), MOF-199 (8 mg, 10 % mol) were added to a flask containing 2 mL DMF/H2O (20:1), The reaction continued at 130 C under atmospheric conditions until completion. Thereaction progress was controlled by thin-layer chromatography. The reaction mixture was then filtered. The filtrate was evaporated under vacuum, CH2Cl2 (20 ml) was addedand the mixture was washed with H2O (2 x 15 ml). Theorganic layer was dried over anhydrous Na2SO4. The solvent was evaporated to give the crude diaryl disulfide, which was purified by plate chromatography (silica gel,n-hexane-ethyl acetate, 20:1). All spectra of the diaryl disulfides are mentioned in the electronic supplementary material.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1-Bromo-4-chlorobenzene, and friends who are interested can also refer to it.

Reference:
Article; Soleiman-Beigi, Mohammad; Mohammadi, Fariba; Catalysis Letters; vol. 146; 8; (2016); p. 1497 – 1504;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

These common heterocyclic compound, 2106-04-9, name is 3-Chloro-2-fluoroaniline, 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. category: chlorides-buliding-blocks

To 3-chloro-2-fluoroaniline (10.0 g, 68.7 mmol) in DMSO (500 mL) was added copper (II) chloride (18.5 g, 137.4 mmol) and conc. HCl (50 mL). The whole was heated to 90 C. for 13 h. The reaction was cooled to 0 C. and 4N NaOH was added dropwise to adjust to pH 8. The reaction was diluted with water and extracted with Et2O/EtOAc (1:1). The organic layer was washed with brine, and was dried, filtered and concentrated. The resulting residue was purified via silica gel chromatography eluding with 5-30% EtOAc/hexane to provide 4-amino-2-chloro-3-fluoro-benzaldehyde (1.00 g) as a yellow powder.

The synthetic route of 3-Chloro-2-fluoroaniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nirschl, Alexandra; Sutton, James C.; Hamann, Lawrence; Wang, Tammy; Zou, Yan; Sun, Chongqing; US2005/197359; (2005); 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. 2106-04-9, name is 3-Chloro-2-fluoroaniline, A new synthetic method of this compound is introduced below., Recommanded Product: 2106-04-9

Step A3: 2-[(3-Chloro-2-fluoro-phenylamino)-(4-chloro-2-methyl-phenyl)-methyl]-1-isopropyl-1H-Pyrrole-3-carboxylic acid ethyl ester Methanesulfonyl chloride (10.62 mmol) was added to a mixture of 2-[(4-chloro-2-methyl-phenyl)-hydroxy-methyl]-1-isopropyl-1H-pyrrole-3-carboxylic acid ethyl ester (Step A4) (4.09 mmol), pyridine (14.01 mmol) and DMAP (1.226 mmol) in CH2Cl2 (70 mL). After stirring for 20 h, the reaction mixture was diluted with CH2Cl2 and washed with a saturated aqueous solution of NH4Cl (2*). The combined aqueous phases were back-extracted with CH2Cl2. The combined organic phases were dried (Na2SO4), filtered and concentrated. A mixture of the crude intermediate and 3-chloro-2-fluoro-phenylamine [2106-04-9] (11.64 mmol) in dioxane (90 mL) was stirred at 90 C. for 11 h. After cooling to rt, the reaction mixture was diluted with EtOAc and successively washed with 10% w/w aqueous citric acid and brine. The combined aqueous phases were back-extracted with EtOAc. The combined organic phases were dried (Na2SO4), filtered and concentrated. The residue was purified using a RediSep silica gel column to afford the title compound as a yellow solid. tR: 9.08 min (HPLC 2); ESI-MS: tR=1.54 min, [M]+318/320 (i.e. fragmented pyrrolium ion) (LC-MS 1); TLC: Rf=0.45 (1:4 EtOAc/hexanes).

The synthetic route of 2106-04-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; NOVARTIS AG; Cotesta, Simona; Furet, Pascal; Guagnano, Vito; Holzer, Philipp; Kallen, Joerg; Mah, Robert; Masuya, Keiichi; Schlapbach, Achim; Stutz, Stefan; Vaupel, Andrea; US2013/317024; (2013); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 2453-46-5, name is Chlorocycloheptane, This compound has unique chemical properties. The synthetic route is as follows., Safety of Chlorocycloheptane

A 1.64 M THF solution of phenylmagnesium chloride (1.10 mL, 2.40 mmol) was added at 0 C. to 0.6 mL of a THF solution of aluminum chloride AlCl3 (80.0 mg, 0.60 mmol). The reaction mixture was stirred at room temperature for 1 hour. To the resulting solution was added 1,2-bis(bis(3,5-di-tert-butylphenyl)phosphino)benzene ([3,5-(t-Bu)2]-DPPBz) (13.4 mg, 0.015 mmol) and a 0.1 M THF solution of iron chloride FeCl3 (0.15 mL, 0.015 mmol) at 0 C., followed by chlorocycloheptane (66.3 mg, 0.5 mmol). The coupling reaction was performed at 80 C. for 24 hours. After cooling to room temperature, a portion of the reaction mixture was taken out, and the yield of the product was measured by gas chromatography (GC), using undecane as an internal standard. The yield was 94%. The results are shown in the Entry 5 column of Table 8.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 2453-46-5.

Reference:
Patent; Kyoto University; US2011/152523; (2011); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 39885-50-2, The chemical industry reduces the impact on the environment during synthesis 39885-50-2, name is 2-Chloro-4-(trifluoromethyl)aniline, I believe this compound will play a more active role in future production and life.

5-Amino-1-(2-chloro-4-trifluoromethylphenyl)-3-cyanopyrazole in the form of an orange crystalline solid, m.p. 133-135¡ãC, from 2-chloro-4-trifluoromethylaniline. 5-Amino-3-cyano-1-(2,4,6-trichlorophenyl)pyrazole in the form of a light brown solid, m.p. 155-156¡ãC, from 2,4,6-trichloroaniline

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-Chloro-4-(trifluoromethyl)aniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; RHONE-POULENC AGRICULTURE LIMITED; EP295117; (1988); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Some common heterocyclic compound, 98446-49-2, name is 2,4-Dichloro-5-methoxyaniline, molecular formula is C7H7Cl2NO, 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. COA of Formula: C7H7Cl2NO

To a stirred solution of 4-chloro-5-[3-(2-chloroethoxy)phenyl]nicotinonitrile (200 mg, 0.68 mmol), 2,4-dichloro-5-methoxyaniline (196 mg, 1 mmol), 2-dicyclohexylphosphino 2′(N,N-dimethylamino)biphenyl (80 mg, 0.20 mmol), and K3PO4 (216 mg, 1 mmol) in 4 mL anhydrous ethylene glycol dimethyl ether was added Pd2(dba)3 (62 mg, 0.07 mmol). The mixture was heated to 90 C. for 2 hours then cooled, filtered through Celite, concentrated in vacuo, and purified by silica gel chromatography eluding with 5-50% MeOH in CH2Cl2 to yield 160 mg of 5-[3-(2-chloroethoxy)phenyl]-4-[(2,4-dichloro-5-methoxyphenyl)amino]nicotinonitrile 150 as a solid (52%). HPLC retention time(c): 14.29 min.; MS: 448 [M+H].

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 98446-49-2, its application will become more common.

Reference:
Patent; Cole, Derek Cecil; Asselin, Magda; Boschelli, Diane Harris; Wissner, Allan; Wang, Yanong Daniel; Prashad, Amarnauth Shastrie; Dushin, Russell; US2007/287738; (2007); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 39885-50-2,Some common heterocyclic compound, 39885-50-2, name is 2-Chloro-4-(trifluoromethyl)aniline, molecular formula is C7H5ClF3N, 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.

To a solution of ethyl (2E) -3- (4- (2-methoxyethoxy) -2- { [ (trifluoromethyl) sulfonyl] oxy}phenyl) acrylate (1.66 g) in tetrahydrofuran (20 ml) were added 2-chloro-4- . (trifluoromethyl) aniline (1.89 g) , racemic-2, 2′ – bis(diphenylphosphino)-l,l’-binaphthyl (519 mg) , palladium acetate (140 mg) and cesium carbonate (2.06 g) , and the mixture was heated under reflux for 8 hr. After cooling, water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl -acetate layer was washed with saturated brine, dried (MgSO4) , and concentrated. The obtained residue was subjected to silica gel column chromatography, and eluted with ethyl acetate-hexane (1:3, v/v) to give ethyl (2E) -3- [2-{ [2-chloro-4- (trifluoromethyl) phenyl] amino} -4- (2- methoxyethoxy) phenyl] acrylate (1.00 g, yield: 54percent) as yellow crystals.1H-NMR (300 MHz, CDCl3) 6:1-29 (3 H, t, J = 7.2 Hz), 3.44 (3 H, s) , 3.73 – 3.79 (2 H, m) , 4.16 – 4.27 (4 H, m) , 6.23 (1 H, s) , 6.34 (1 H, d, J = 15.9 z) , 6.55 – 6.59 (1 H, m) , 6.85 – 6.91 (2 H, m),.7.32 – 7.62 (-3 H, m) , 7.77 (I H, d, J = 15.9 Hz)..

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Chloro-4-(trifluoromethyl)aniline, its application will become more common.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; WO2007/18314; (2007); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics