Month: March 2021

Related Products of 5332-26-3, A common heterocyclic compound, 5332-26-3, name is 2-(Bromomethyl)isoindoline-1,3-dione, molecular formula is C9H6BrNO2, 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.

A mixture of 1.02 g (7.4 mmol) of freshly calcined K2CO3, 7.0 mmol of the corresponding 2-thiouracil 1-3 and 7.7 mmol of 2-(bromomethyl)-2Hisoindole-1,3-dione in 20 mL of anhydrous DMF was stirred at room temperature for 72 h. The mixture was filtered, the fi ltrate was evaporated to dryness under reduced pressure. The precipitate of mineral salts on the filter was dissolved in 1 M. aqueous H3PO4 and the resulting solution was combined with the bottom residue. The resulting mixture was filtered. The filtercake was washed with water, and then the filtrate was extracted EtOAc (3¡Á50 mL). The filter cake was air dried to constant weight, and the organic extract was dried over anhydrous MgSO4. The dried organic extract was evaporated to dryness under reduced pressure. The residue was mixed with the filter cake and evaporated in a mixture with toluene (3¡Á50 mL) under reduced pressure. A crude product was obtained in the residue, which was subjected to further purification using preparative HPLC. 2-{[(6-Methyl-4-oxo-1,2-dihydropyrimidin-2-yl)-sulfanyl]methyl}-2H-isoindole-1,3-dione (4). Yield 63%, mp 251.5252.1C, Rf 0.38 (EtOAc – hexane, 2 : 1). IR spectrum (mineral oil), nu, cm-1: 3006, 1778, 1719,1574, 1540, 1464, 1292, 708. 1H NMR spectrum (400 MHz), delta, ppm: 2.07 s (3H, 3), 5.42 s (2, S2),6.06 s (1, ), 7.86-7.93 m (4Ar), 12.44 s (1, N).Mass spectrum, m/z (I, %): 302.3 (100) [M + H]+. Found,%: C 56.01; H 3.72; N 14.08; S 10.51. C14H11N3O3S.Calculated, %: C 55.80; H 3.68; N 13.95; S 10.64.

The synthetic route of 5332-26-3 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Babushkin, A. S.; Chapurkin, V. V.; Maryshev, A. Yu.; Navrotskii, M. B.; Novakov, I. A.; Ruchko, E. A.; Schols, D.; Sheikin, D. S.; Russian Journal of General Chemistry; vol. 90; 3; (2020); p. 352 – 356; Zh. Obshch. Khim.; vol. 90; 3; (2020); p. 365 – 370,6;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Electric Literature of 954-81-4,Some common heterocyclic compound, 954-81-4, name is N-(5-Bromopentyl)phthalimide, molecular formula is C13H14BrNO2, 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.

A mixture of N-(5-bromopentyl)phthalimide (1.49 g, 5 mmol) and N,N-diisopropylethylamine (870 muL, 5 mmol) was dissolved in NMP (2 mL) followed by morpholine (870 muL, 5.5 mmol). The reaction mixture was stirred at room temperature overnight, the formed precipitate was filtered, and the filtrate evaporated. The crude product was triturated from EtOAc, filtered, and dried in vacuo to provide the alkylated morpholine intermediate (939 mg) as a white solid. The intermediate was dissolved in ethanol (20 mL) then treated with hydrazine hydrate (155 muL, 3.1 mmol). The reaction mixture was heated at reflux for 2 h, cooled to room temperature, and the formed precipitate was filtered. The filtrate was concentrated in vacuo, and the resulting residue was dissolved in chloroform (5 mL) followed by treatment with N-(9-fluorenylmethoxycarbonyl)-isothiocyanate (872 mg, 3.1 mmol) The reaction mixture was maintained at room temperature for 2 h, then concentrated in vacuo. The resulting oil was dissolved in EtOAc (5 mL), treated with piperidine (614 muL, 6.2 mmol), stirred at room temperature for 30 min, and concentrated in vacuo. The resulting residue was dissolved in dichloromethane (10 mL), and the formed precipitate was filtered and dried in vacuo to provide 1-(5-morpholinopentyl)thiourea (287 mg, 58%) as a yellowish amorphous solid.

The synthetic route of 954-81-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Dickson, John K.; Hodge, Carl Nicholas; Mendoza, Jose Serafin; Chen, Ke; US2006/52416; (2006); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Synthetic Route of 7477-63-6, The chemical industry reduces the impact on the environment during synthesis 7477-63-6, name is 7-Chloroisatin, I believe this compound will play a more active role in future production and life.

General procedure: Mg(ClO4)2 (10 mol percent) was added to a mixture of isatin (2 mmol), malononitrile or ethyl cyanoacetate (2mmol), and dimedone (2 mmol) in aqueous ethanol solution(50percent, v/v, 5 mL), and the resulting mixture was stirred at 50¡ãC for 30-60 min. Upon completion of the reaction (TLC),the mixture was allowed to cool to room temperature. The resulting solid was filtered and washed successively with water (2 ¡Á 30 mL) and cold aqueous ethanol (2 ¡Á 1 mL) to afford pure product 4.

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, 7-Chloroisatin, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Wu, Chunlei; Shen, Runpu; Chen, Jianhui; Hu, Chunqi; Bulletin of the Korean Chemical Society; vol. 34; 8; (2013); p. 2431 – 2435;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Reference of 19727-83-4, 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. 19727-83-4 name is 6-Nitroindoline, 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: Into a Schlenk tube (volume: ca. 20 mL) connected to a balloon partially filled with Ar gas, Pd/LDH (75 mg, Pd: 3 mol %), 4-isopropylpiperidine (0.5 mmol), decane (internal standard, 0.1 mmol), octane (2.0 mL), and a Teflon-coated magnetic stir bar were successively placed, and the reaction mixture was vigorously stirred at 120 C, in 1 atm of Ar. After the reaction was completed, the conversion of 4-isopropylpiperidine and the yield of 4-isopropylpyridine were determined by GC analysis. The reactions of piperidine and 4-methylpiperidine were conducted in a test tube with an Ar balloon. During these reactions, the upper side of the test tube was cooled by refrigerant (-5 C).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 6-Nitroindoline, and friends who are interested can also refer to it.

Reference:
Article; Oyama, Takashi; Yatabe, Takafumi; Jin, Xiongjie; Mizuno, Noritaka; Yamaguchi, Kazuya; Chemistry Letters; vol. 48; 6; (2019); p. 517 – 520;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Reference of 675109-26-9, These common heterocyclic compound, 675109-26-9, name is 6-Bromoisoindolin-1-one, 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.

A mixture of 6-bromoisoindolin-1-one (287 mg, 1.35 mmol), 1-methyl-5-(tributylstannyl)-1H-imidazole (500 mg, 1.35 mmol), Pd(dppf)Cl2 (33 mg, 0.041 mmol) and Cs2CO3 (1.32 g, 4.05 mmol) in dioxane (50 mL) and water (8 mL) was heated to 100 C. overnight. After cooling, the mixture was concentrated under vacuum and purified by column chromatography on silica gel ((1%-3% MeOH in DCM) to afford 9A (220 mg, 76% yield) as a brown solid: 1H NMR (400 MHz, DMSO-d6) delta 8.66 (s, 1H), 7.76-7.15 (m, 4H), 7.15 (s, 1H), 4.43 (s, 2H), 3.72 (s, 3H); ESI m/z 214.1 [M+1]+.

Statistics shows that 6-Bromoisoindolin-1-one is playing an increasingly important role. we look forward to future research findings about 675109-26-9.

Reference:
Patent; Seal Rock Therapeutics, Inc.; BROWN, Samuel David; US2018/291002; (2018); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – 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. 17702-83-9, name is 2-(8-Bromooctyl)isoindoline-1,3-dione belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. Formula: C16H20BrNO2

General procedure: 2-(omega-Bromoalkyl)-isoindoline-1,3-dione (1 equiv) with N-methylbenzylamine (1 equiv) or its substituted analog in the presence of K2CO3 (3 equiv) was stirred in acetonitrile under reflux for 16 h. Once the reaction was finished, the solvent was evaporated under vacuum, producing a residue that was further dissolved in 50 mL of 5 M NaOH and extracted with ethyl acetate (3 x 50 mL). The combined organic extracts were dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by silica gel column chromatography (dichloromethane to dichloromethane/methanol 98:2), yielding a yellow oil. The final product was obtained in the form of hydrochloride salt. The following compounds were obtained.

The synthetic route of 17702-83-9 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Guzior, Natalia; Bajda, Marek; Rakoczy, Jurand; Brus, Boris; Gobec, Stanislav; Malawska, Barbara; Bioorganic and Medicinal Chemistry; vol. 23; 7; (2015); p. 1629 – 1637;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

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 13220-46-7 as follows. name: 4-Methylindolin-2-one

Example 76 (R,Z)-5-(2-hydroxy-3-morpholinopropyl)-3-methyl-2-((4-methyl-2-oxoindolin-3-ylidene)methyl)-5,6,7,8-tetrahydropyrrolo[3,2-c]azepin-4(1H)-one 5-(2-Hydroxy-3-morpholin-4-yl-propyl)-3-methyl-4-oxo-1,4,5,6,7,8-hexahydro-pyrrolo[3,2-c]azepine-2-carbaldehyde 53f (30 mg, 0.09 mmol) and 4-methyl-1,3-dihydro-indol-2-one (12 mg, 0.08 mmol) were dissolved in 156 mul of ethanol, and added with 4.4 mul of piperidine to the solution at room temperature. Upon completion of the addition, the reaction mixture was stirred at 45 C. for 16 hours. After thin lay chromatography showed the disappearance of starting materials, the reaction mixture was naturally cooled down to room temperature, and filtered. The filter cake was washed with anhydrous ethanol (1 ml*2) and dried to obtain the title compound (R,Z)-5-(2-hydroxy-3-morpholinopropyl)-3-methyl-2-((4-methyl-2-oxoindolin-3-ylidene)methyl)-5,6,7,8-tetrahydropyrrolo[3,2-c]azepin-4(1H)-one 76 (12 mg, yield 30%) as a orange solid.

According to the analysis of related databases, 13220-46-7, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ChoTang, Peng Cho; Su, Yidong; Li, Yali; Zhang, Lei; Zhao, Fuqiang; Yang, Jialiang; Zhou, Ying; Bie, Pingyan; Qian, Guangtao; Ju, Minggang; US2010/75952; (2010); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Reference of 104618-32-8, 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 104618-32-8 as follows.

To a solution of the title compound from above step A (1.5 g, 6.7 mmol) in ethanol (100 mL) was added ketone derivative (1.6 g, 6.7 mmol) in ethanol (50 mL). The reaction mixture was stirred for 5 h at room temperature. The solvent was removed to give the title compound as a solid (3.1, quantitative). The product was used in the next step without any purification.

According to the analysis of related databases, 104618-32-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; AC Immune, S.A.; US2011/280808; (2011); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Adding a certain compound to certain chemical reactions, such as: 954-81-4, name is N-(5-Bromopentyl)phthalimide, belongs to indolines-derivatives compound, 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 954-81-4, Safety of N-(5-Bromopentyl)phthalimide

60 g (0.302 mol) N-[(E)-4-pyridylmethyleneamino]aniline in 350 ml N,N-dimethyl5 formamide were stirred at 20C under argon atmosphere. The reaction mixture wascooled down -30C. 22 g (0.903 mol) sodium hydride was added slowly while keeping the reaction temperature below -25C. Afterwards, a solution of 121 g (0.452 mol) N-(5-bromopentyl)phthalimide in 500 ml N,N-dimethylformamide was added into the mixturedropwise within one hour. After the addition, the product mixture was warmed to 20Cand continued to stir for another 12 hours. Then, the reaction was quenched by adding20 ml water. Another 600 ml water were poured into the reaction mixture. The formedprecipitate was collected by filtration and washed with distilled water. The obtainedcrude product was used for the next step directly without further purification.Yield: 88 g (75%), yellow solid.ESI-MS m/z 412.2 [W].

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, N-(5-Bromopentyl)phthalimide, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; BASF SE; BACHMANN, Frank; CREMER, Christian; FROEHLING, Beate; MURPHY, Bryan Patrick; ZHANG, Guiru; TORGERSON, Peter Marte; (123 pag.)WO2016/146813; (2016); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – 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. 883-44-3, name is 2-(3-Hydroxypropyl)isoindoline-1,3-dione, This compound has unique chemical properties. The synthetic route is as follows., COA of Formula: C11H11NO3

Compound 330(2R,3R,4S,5R)-2-(6-amino-9H-purin-9-yl)-5-(((3-((5-(tert-butyl)-lH-benzo[d]imidazol- 2-yl)amino)propyI)amino)methyl)tetrahydrofuran-3,4-diolStep 1. Preparation of 3-(l,3-dioxoisoindolin-2-yl)propanal2-(3-hydroxypropyl)isoindoline-l,3-dione (414 mg, 2.0 mmol) and IBX (1.68 g, 6 mmol) were dissolved in EA (25 mL) and the reaction mixture was heated to reflux with stirring for 3 h. And then the mixture was filtrated and rinsed with EA (15 mL x 3), the filtrate was concentrated to afford the product (crude, 412 mg, yield: 100 %) as a yellow solid which was directly used for next step without further purification.

According to the analysis of related databases, 883-44-3, the application of this compound in the production field has become more and more popular.

Reference:
Patent; EPIZYME, INC.; CHESWORTH, Richard; KUNTZ, Kevin, Wayne; OLHAVA, Edward, James; PATANE, Michael, A.; WO2012/82436; (2012); A2;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem