Tag: M.W=100-200

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. 7051-16-3, name is 1-Chloro-3,5-dimethoxybenzene belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. category: chlorides-buliding-blocks

3-Chloro-5-methoxy-phenol3-Chloro-5-methoxy-phenolSodium methanelhiolate (3.04 g, 43.37 mmol), was added to a solution of l-chloro-3.5- dimethoxy benzene (5.0 g, 28.96 mmol) in 20 ml of l-Methyl-2-Pyrrolidone and the reaction mixture was heated at 140 C for 2.5 h then stirred at room temperature over night. l-Methyl-2-pyrrolidone was removed under reduced pressure and the material partitioned between ethyl acetate/water/lN hydrochloric acid. The organic layer was washed twice with IN hydrochloric acid, brine, dried over sodium sulfate and solvent removed under reduced pressure to give a yellowish solid. The solid was purified by column chromatography (silica gel 60-120 mesh, 10:90 ethylacetate:hexane) to afford 3- Chloro-5-methoxy-phenol in 76.4 % yield.MS [M-H] 157.2, ? NMR (400 MHz, CDCI3) delta (ppm): 6.455-6.500 (d, 2H, J=I8.0 Hz), 6.291 (s, 1H), 4,978 (s, III), 3.767 (s, 3H).

The synthetic route of 7051-16-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; JUBILANT BIOSYS LTD.; SARMA, Pakala Kumara Savithru; ACHARYA, Vinod Parameshwaran; KASIBHATLA, Srinivas Rao; VISWANADHAN, Vellarkad Narayana; TIWARI, Atul; SINGHA, Rakesh Kumar; BISCHOFF, Alexander; (149 pag.)WO2012/90219; (2012); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 13726-14-2, These common heterocyclic compound, 13726-14-2, name is 4-Chloro-3-methoxyaniline, 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.

Ir (ppy) 3 (2 mg) and DMF (1 ml) were added to the reaction flask under nitrogen or argon atmosphere and then irradiated with a blue LED band (7 W) at room temperature until complete conversion of the trivalent iodine reagent was completed. 10 ml of a saturated aqueous Na2C03 solution was added thereto, and the mixture was extracted three times with ethyl acetate. The organic layer was washed once with saturated brine, and the organic layer was dried over anhydrous Na2S04. Column chromatography (eluent: petroleum ether 60-90: ethyl acetate = 20: 1-10: 1) afforded the product in a yield of 62%

The synthetic route of 13726-14-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nanjing University; Zhu, ChengJian; Xie, jin; Xu, Pan; (13 pag.)CN103553857; (2016); B;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 2613-34-5, 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. 2613-34-5 name is 3-Chloro-2,4-difluoroaniline, 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.

Ethyl l-(2-ethoxy-2-oxo-acetyl)-2-methyl-piperidine-3-carboxylate was prepared from ethyl 2-methylpiperidine-3-carboxylate, similarly as described for methyl (2S,3S)-1- (2-ethoxy-2-oxo-acetyl)-2-methyl-pyrrolidine-3-carboxylate from methyl (2S,3S)-2- methylpyrrolidine-3-carboxylate. Compound 35 was prepared similarly as described for compound 33, starting from Ethyl l-(2-ethoxy-2-oxo-acetyl)-2-methyl-piperidine-3- carboxylate instead of methyl (2S,3S)-l-(2-ethoxy-2-oxo-acetyl)-2-methyl-pyrrolidine-3- carboxylate and using 3-chloro-2,4-difluoro-aniline instead of 3-chloro-4,5-difluoro- aniline. Compound 35 (550 mg) was separated in diastereoisomers 35a, 35b, 35c and 35d via Preparative SFC (Stationary phase: Chiralpak Daicel IC 20 x 250 mm, Mobile phase: C02, EtOH with 0.2% iPrNH2). Compound 35a ((2S,3S) or (2R,3R), first eluting on SFC, 70 mg), Method D, Rt = 1.86 min., m/z = 454.1 (M-H)”, Exact mass: 455.1. Compound 35b ((2S,3S) or (2R,3R), second eluting on SFC, 88 mg) Method D, Rt = 1.87 min., m/z = 454.1 (M-H)”, Exact mass: 455.1. Compound 35c ((2S,3R) or (2R,3S), third eluting on SFC, 86 mg), Method D, Rt = 1.89 min., m/z = 454.1 (M-H)”, Exact mass: 455.1. Compound 35d ((2S,3R) or (2R,3S), fourth eluting on SFC, 106 mg), Method D, Rt = 1.88 min., m/z = 454.1 (M-H)”, Exact mass: 455.1.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3-Chloro-2,4-difluoroaniline, and friends who are interested can also refer to it.

Reference:
Patent; JANSSEN R&D IRELAND; VANDYCK, Koen; HACHE, Geerwin Yvonne Paul; KESTELEYN, Bart Rudolf Romanie; RABOISSON, Pierre Jean-Marie Bernard; WO2015/59212; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

94-97-3, name is 5-Chloro-1H-benzo[d][1,2,3]triazole, belongs to chlorides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Formula: C6H4ClN3

General procedure: A typical procedure for the catalytic N-sulfonylation of benzotriazoles using I2 as catalyst includes: in EtOAc-H2O (10:1) mixture solvent (2 mL), benzotriazole 1a (0.3 mmol), sodium benzenesulfinate 2a (0.9 mmol), I2 (0.06 mmol) were added successively. The suspension mixture was vigorously stirred at room temperature for 3 h. Upon completion, the reaction was quenched by addition of sat. aq. Na2S2O3 (2 mL), basified with sat. aq. Na2CO3 (8 mL) and H2O (5 mL). The mixture was extracted with CH2Cl2 (3* 5 mL) and the combined organic phase was dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure. The residue was then purified by TLC technique (petroleum ether/ethyl acetate = 3:1, v/v) to furnish 1-phenylsulfonylbenzotriazole 3a [28] in 97% yield.

The synthetic route of 94-97-3 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Wu, Si-Xue; Zhang, Yi-Kun; Shi, Hong-Wei; Yan, Jie; Chinese Chemical Letters; vol. 27; 9; (2016); p. 1519 – 1522;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

These common heterocyclic compound, 26487-67-2, name is 1-(2-Chloroethyl)azepane hydrochloride, 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. name: 1-(2-Chloroethyl)azepane hydrochloride

To a solution of 2,2-bis(4-hydroxyphenyl)methylenecyclohexane (23.3 mg, 83.1 mumol) in DMF (0.83 mL) at 0 ¡ãC was added 55percent sodium hydride (dispersion in paraffin liquid, 29.1 mg, 0.667 mmol). The reaction mixture was stirred for 30 min at 50 ¡ãC and then N-(2-chloroethyl)hexahydro-1H-azepine hydrochloride (54.5 mg, 0.275 mmol) was added in portions at room temperature. After the reaction mixture had been stirred for 4 h at 50 ¡ãC, saturated aqueous ammonium chloride was added at 0 ¡ãC. The mixture was extracted with dichloromethane and the organic layer was dried over sodium sulfate. After filtration of the mixture and evaporation of the solvent, the crude product was purified by thin layer chromatography on silica (eluant; ammoniacal chloroform/methanol = 15/1) to afford RID-F-S*16 (compound 14) (32.0 mg, 73percent) as a yellow oil

The synthetic route of 1-(2-Chloroethyl)azepane hydrochloride has been constantly updated, and we look forward to future research findings.

Reference:
Article; Hasegawa, Makoto; Yasuda, Yukari; Tanaka, Makoto; Nakata, Kenya; Umeda, Eri; Wang, Yanwen; Watanabe, Chihiro; Uetake, Shoko; Kunoh, Tatsuki; Shionyu, Masafumi; Sasaki, Ryuzo; Shiina, Isamu; Mizukami, Tamio; European Journal of Medicinal Chemistry; vol. 71; (2014); p. 290 – 305;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 2106-04-9, A common heterocyclic compound, 2106-04-9, name is 3-Chloro-2-fluoroaniline, molecular formula is C6H5ClFN, 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.

Toluene (250 g) and water (150 g) were added to 50.0 g (0.34 mol) of 3-chloro-4-fluoroaniline and the mixture was heated to 60 C. Into this reaction mixture was added dropwise 50.7 g (0.36 mol) of benzoyl chloride. At the same time, a 10% aqueous sodium hydroxide solution was added dropwise thereto to maintain the pH around 8. After the dropwise addition was completed, the mixture was stirred for 2 hours and cooled in ice. The precipitate was filtered, washed with water, and dried to obtain 74.8 g of the title compound (yield: 87%) as a white solid. 1H-NMR (CDCl3, deltappm) 7.11-7.18 (2H, m), 7.50-7.61 (3H, m), 7.88-7.90 (2H, m), 8.05 (1H, brs), 8.38-8.42 (1H, m).

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; MITSUI CHEMICALS AGRO, INC.; Kitajima, Kazuki; Kodaka, Kenji; Katsuta, Hiroyuki; Okumura, Kunio; US2013/317247; (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. 1303587-99-6, name is 2-Chloro-7,8-dihydro-6H-pyrimido[5,4-b][1,4]oxazine, This compound has unique chemical properties. The synthetic route is as follows., Product Details of 1303587-99-6

Synthesis of 8-benzyl-2-chloro-7 , 8-dihydro-6H-pyrimido [5, 4-b] [I, 4] oxazine [0457] To a stirred solution of 2-chloro-7, 8-dihydro-6H-pyrimido [5, 4-b] [1, 4] oxazine (100 mg, 0.58 mmol) in DMF (3.5 mL) under argon atmosphere were added sodium hydride (28 mg, 1.16 mmol) and bromomethylbenzene (216 mg, 1.16 mmol) at 0 C. The reaction mixture was warmed to RT and stirred for 1 h. After consumption of the starting materials (monitored by TLC), the reaction was diluted with water (20 mL) and extracted with EtOAc (2 x 20 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by column chromatography using 40% EtOAc:hexane to afford 8-benzyl-2-chloro-7, 8-dihydro-6H-pyrimido [5, 4-b] [1, 4] oxazine (120 mg, 75%) as an off-white solid. 1H-NMR (DMSO-<, 500 MHz): delta 7.62 (s, 1H), 7.30-7.20 (m, 5H), 4.10-4.08 (m, 2H), 3.78 (t, 2H), 3.49-3.47 (m, 2H), 2.88 (t, 2H); LCMS: 275.8 (M+); (column; X-Select CSH C-18 (50 3.0 mm, 3.5 mupiiota); RT 3.64 min 0.05% Aq TFA: ACN; 0.80 mL/min); TLC: 60% EtOAc/hexane (R 0.6). 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 1303587-99-6. Reference:
Patent; FORUM PHARMACEUTICALS INC.; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; MCRINER, Andrew, J.; WO2015/66697; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 261762-56-5, 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 261762-56-5 as follows.

To a mixture of 1-chloro-2-fluoro-3-methoxy-benzene (5.00 g, 31.1 mmol) in dichloromethane (40 mL) was added titanium tetrachloride (10.0 g, 52.9 mmol) dropwise at 0 C under nitrogen. Dichloro(methoxy)methane (3.58 g, 31.1 mmol) was then added to the solution. Then the mixture was stirred at rt for 3 hours. On completion, the residue was poured into ice- water (50 mL) and extracted with ethyl acetate (50 mL). The combined organic layer was washed with brine (50 mL), dried with anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography eluted with petroleum ether/ethyl acetate (20/1 to 3/1) to give the title compound. ?HNMR (400 IVIFIz, DMSO-d6) = 10.15 (s, 1H), 7.74 (d, J6.8 Hz, 1H), 7.37 (d, J 6.0 Hz, 1H), 3.98 (s, 3H).

According to the analysis of related databases, 261762-56-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; RAZE THERAPEUTICS, INC.; MAINOLFI, Nello; (163 pag.)WO2017/156179; (2017); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 13726-14-2, 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. 13726-14-2, name is 4-Chloro-3-methoxyaniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: Procedure B: A mixture of substituted 2,4-dichloropyrimidine (1.0 equiv.), and substituted aniline (1.0-1.05 equiv.), and DIPEA (1.2 equiv.) in isopropanol (0.1 M) was stirred and heated at reflux. The reaction time, work-up, and product isolation procedure are described below.

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-Chloro-3-methoxyaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; H. LEE MOFFITT CANCER CENTER AND RESEARCH INSTITUTE, INC.; SCHOeNBRUNN, Ernst; LAWRENCE, Nicholas, J.; LAWRENCE, Harshani, R.; (257 pag.)WO2016/22460; (2016); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 104-11-0,Some common heterocyclic compound, 104-11-0, name is 1-(4-Chlorophenyl)-N-methylmethanamine, molecular formula is C8H10ClN, 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: The procedure is as follows: 3 mg of catalyst CoPz (hmdtn) 4 is weighed into a quartz jacketed photoreactor, and then 25 mL of a reaction solvent, acetonitrile (abbreviated as CH3CN), is added. CoPz(hmdtn)4 was completely dissolved in CH3CN under stirring. Further, 0.01 mmol of the auxiliary 1,8-diazabicycloundec-7-ene (abbreviated as DBU) and 1 mmol of N-methylbenzylamine were added to the above system. Stirring was continued for 2 h in the dark. Then, at 1 atm oxygen and lambda ? 420 nm visible light (using a xenon lamp as a light source, a 420 nm filter is used to filter out light having a wavelength of less than 420 nm, The following examples are the same as the light intensity of 1.01 W¡¤cm -2 ) for 3 h under light conditions. The reaction products were qualitatively analyzed and quantified by gas chromatography-mass spectrometry (GC-MS) and gas chromatography (GC). The experiment was recorded as Entry 1.

The synthetic route of 104-11-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; South Central University for Nationalities; Yang Changjun; Jin Juanjuan; Deng Kejian; Zhang Bingguang; (12 pag.)CN108623494; (2018); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics