Tag: M.W=200-300

Electric Literature of 5394-18-3,Some common heterocyclic compound, 5394-18-3, name is 2-(4-Bromobutyl)isoindoline-1,3-dione, molecular formula is C12H12BrNO2, 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.

2-[4-(4-Morpholinyl)butyl]-1H-isoindole-1,3(2W)-dione (307). A mixture of 4- bromobutylphthalimide (10.0 g, 35.4 mmol), K2CO3 (5.88 g, 42.5 mmol) and morpholine (4.6 mL, 53.1 mmol) in DMF (100 mL) was stirred at 100 0C for 8 h, cooled to 20 0C and the solvent evaporated. The residue was partitioned between EtOAc (300 mL) and water (300 mL), the organic fraction washed with water (2 x 50 mL) and brine (50 mL), dried and the solvent evaporated. The residue was purified by chromatography, eluting with EtOAc, to give phthalimide 307 (9.59 g, 94%) as a clear oil: 1H NMR delta 7.81-7.86 (m, 2 H, Harom), EPO 7.68-7.73 (m, 2 H1 Haram), 3.66-3.72 (m, 6 H, 2 x CH2O, CH2N), 2.41 (br t, J = 4.5 Hz, 4 H, 2 x CH2N), 2.35 (br dd, J = 7.6, 7.4 Hz, 2 H, CH2N), 1.69-1.76 (m, 2 H, CH2), 1.50-1.58 (m, 2 H, CH2).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-(4-Bromobutyl)isoindoline-1,3-dione, its application will become more common.

Reference:
Patent; AUCKLAND UNISERVICES LIMITED; WO2006/104406; (2006); A1;,
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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 132898-96-5 as follows. Application In Synthesis of 2,3-Dioxoindoline-5-sulfonyl chloride

General procedure: To a stirred solution of the N-Boc-protected pyrrolidine (1.0 mmol) in dry DCM (3 mL) at 0 C under argon atmosphere, TFA (1.14 g, 10.0 mmol) was added dropwise. The obtained solution was stirred at 0 C for 30 min followed by stirring at r.t. for 2 h. Subsequently, the solution was poured to cold 10% aq. NaOH (15 mL) and extracted with DCM (3 ¡Á 15 mL). The combined organic phases were dried over MgSO4 and concentrated under reduced pressure resulting in the corresponding unprotected pyrrolidine, which was used in the next step without further purification. The free pyrrolidine (ca. 1 mmol) from the previous step was then taken up in CHCl3 (2.2 mL) and DIPEA (2.0 mmol) was added. The solution was added dropwise to a stirred solution of 5-chlorosulfonyl isatin (1.5 mmol) in CHCl3/THF (1:1, 15 mL) at room temperature. The resulting mixture was stirred further for 1 h and the solvent was removed under reduced pressure. After purification by flash column chromatography the target isatin sulfonamide was obtained.

According to the analysis of related databases, 132898-96-5, the application of this compound in the production field has become more and more popular.

Reference:
Article; Limpachayaporn, Panupun; Riemann, Burkhard; Kopka, Klaus; Schober, Otmar; Schaefers, Michael; Haufe, Guenter; European Journal of Medicinal Chemistry; vol. 64; (2013); p. 562 – 578;,
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Electric Literature of 5332-26-3, 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. 5332-26-3 name is 2-(Bromomethyl)isoindoline-1,3-dione, 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: The vacuum dried intermediate 3 (0.002 mol) was then reacted with mono- and di-substituted benzoic acids (0.003 mol) separately in presence of anhydrous potassium carbonate (0.003 mol) in DMF (10 mL). The reaction mixture was stirred at room temperature for about 2 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the reaction mixture was poured into ice-cold water and allowed stir for 10 min. The solid obtained was filtered and washed successively with distilled water and recrystallized from ethanol to obtain4(a-n).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-(Bromomethyl)isoindoline-1,3-dione, and friends who are interested can also refer to it.

Reference:
Article; Kumar, C.S. Chidan; Loh, Wan-Sin; Chandraju, Siddegowda; Win, Yip-Foo; Tan, Weng Kang; Quah, Ching Kheng; Fun, Hoong-Kun; PLoS ONE; vol. 10; 3; (2015);,
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Reference of 132898-96-5, 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. 132898-96-5 name is 2,3-Dioxoindoline-5-sulfonyl chloride, 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.

A mixture of dimethylamine (2M solution in THF) (0.668 mmol, 1.3 eq) and DIPEA (0.139 g, 1.02 mmol, 2 eq) was added to a solution of rpm 121 (0.126 g, 0.514 mmol) in anhydrous THF (4 ml) at 0 0C under Ar. The reaction mixture was stirred overnight at room temperature, and the mixture was poured into water (5 ml). The product was extracted with ethyl acetate (3 x 10 ml). The organic extracts were collected, dried over Na2SO4 and the solvent removed under reduced pressure. The pure compound rpm 123 was obtained after trituration with ethyl acetate (5 ml) as a yellow solid (0.90 g, 0.354 mmol, 68%), mp 150- 152 0C (lit mp 233 0C.) 1H NMR (400 MHz, DMSO-d6) delta 2.60 (6H, s), 7.09 (IH, d, J 8.3 Hz), 7.68 (IH, d, J2.0 Hz), 7.91 (IH, dd, J 8.3, 2.0 Hz), 1 1.44 (IH, s).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2,3-Dioxoindoline-5-sulfonyl chloride, and friends who are interested can also refer to it.

Reference:
Patent; UNIVERSITY OF SOUTH FLORIDA; H. LEE MOFFITT CANCER CENTER AND RESEARCH INSTITUTE, INC.; WO2007/117699; (2007); A2;,
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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 3335-98-6 as follows. Recommanded Product: 3335-98-6

General procedure: A mixture of isatins (1, 1.0 mmol), indolin-2-ones (2, 1.0 mmol) and ZrCl4 (23 mg, 0.1 mmol) was heated in anhydrous ethanol (5 mL) under reflux. After the disappearance of the reactants (8-12 h, monitored by TLC), the mixture was slowly cooled to room temperature. The red solids precipitated and were collected by filtration, then washed by a small amount of anhydrous ethanol to deliver pure compounds 3.

According to the analysis of related databases, 3335-98-6, the application of this compound in the production field has become more and more popular.

Reference:
Article; Liu, Meilin; Qiu, Shaozhong; Ye, Yu; Yin, Guodong; Tetrahedron Letters; vol. 57; 52; (2016); p. 5856 – 5858;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Some common heterocyclic compound, 20870-78-4, name is 5-Bromoindolin-2-one, molecular formula is C8H6BrNO, 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. Recommanded Product: 20870-78-4

5-Phenyloxindole 5-Bromo-2-oxindole (5 g, 23.5 mmol) was dissolved in 110 mL toluene and 110 mL ethanol with stirring and a little heat. Tetrakis(triphenylphosphine)palladium(0) (1.9 g, 1.6 mmol) was added followed by 40 mL (80 mmol) 2M aqueous sodium carbonate. To this mixture was added benzene boronic acid (3.7 g, 30.6 mmol) and the mixture was heated in a 100 C. oil bath for 12 hours. The reaction was cooled, diluted with ethyl acetate (500 mL), washed with saturated sodium bicarbonate (200 mL), water (200 mL), 1N HCl (200 mL) and brine (200 mL). The organic layer was dried over magnesium sulfate and concentrated to afford a brown solid. Trituration with dichloromethane afforded 3.8 g (77%) of 5-phenyl-2-oxindole as a tan solid. 1H NMR (360 MHz, DMSO-d6) delta 10.4 (br s, 1H, NH), 7.57 (dd, J=1.8 and 7.2 Hz, 1H), 7.5 to 7.35 (m, 5H), 7.29 (m, 1H), 6.89 (d, J=8.2 Hz, 1H), 3.51 (s, 2H, CH2CO). MS m/z 209 [M+].

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 20870-78-4, its application will become more common.

Reference:
Patent; Sugen, Inc.; US6878733; (2005); B1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Application of 2058-72-2, 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. 2058-72-2 name is 5-Bromo-1-methylindoline-2,3-dione, 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 solution of isatins 1 (0.6 mmol), 3-methyl-4-nitro-5-isatylidenylisoxazoles 2 (0.4 mmol) and proline or thioproline (0.8 mmol) in the 10.0 mL of EtOH at reflux for 5 h. After completion of the reaction, as indicated by TLC, the reaction mixture was directly subjected to flash column chromatography on silica gel (petroleum ether/EtOAc = 5:1-3:1) to furnish the corresponding products 3.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 5-Bromo-1-methylindoline-2,3-dione, and friends who are interested can also refer to it.

Reference:
Article; Lin, Bing; Zhang, Wen-Hui; Wang, Dan-Dan; Gong, Yi; Wei, Qi-Di; Liu, Xiong-Li; Feng, Ting-Ting; Zhou, Ying; Yuan, Wei-Cheng; Tetrahedron; vol. 73; 34; (2017); p. 5176 – 5188;,
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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 20780-77-2 as follows. Computed Properties of C8H4INO2

General procedure: A mixture of isatin 1 (1.0 mmol), malononitrile or cyanoacetic ester 2 (1.0 mmol), phthalhydrazide (1.0 mmol), and NiCl2 (0.2 mmol) in PEG 600 (5 mL) was stirred at 100 C for the appropriate time (refPreviewPlaceHolderTable 2). After complete conversion as indicated by TLC, water was added and the product was extracted with ethyl acetate (2¡Á10 ml). The organic phase was dried over anhydrous Na2SO4, and concentrated under reduced pressure. The crude product was recrystallized from ethanol to afford the pure product.

According to the analysis of related databases, 20780-77-2, the application of this compound in the production field has become more and more popular.

Reference:
Article; Zhang, Xiao-Nan; Li, Yong-Xiao; Zhang, Zhan-Hui; Tetrahedron; vol. 67; 38; (2011); p. 7426 – 7430;,
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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 20870-90-0 as follows. HPLC of Formula: C9H8BrNO

A mixture of 5-bromo-1-methyl-2-oxoindoline (500 mg, 2.212 mmol), Bis(pinacolato)diboron (730 mg, 2.88 mmol), KOAc (651 mg, 6.64 mmol) and PdCl2(dppf).CH2CI2 complex (81 mg, 0.1 1 1 mmol) in Dioxane (8.32 mL) was stirred at 1 15C for 20 min. The reaction mixture was cooled down to RT, filtered through a pad of Celite and the filtrate was concentrated under reduced pressure. EtOAc and saturated aqueous NaHC03 solution were added and both phases were separated. The organic phase was washed twice with brine, dried over MgS04, filtered and concentrated under reduced pressure to afford the title product (1.04 g, 2.208 mmol, quantitative yield) as brown solid. Rt = 1.917 min (LC-MS); ESI-MS = 274.1 [M+1]+ (LC-MS).

According to the analysis of related databases, 20870-90-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; NOVARTIS AG; ARISTA, Luca; CHAMOIN, Sylvie; D’ALESSANDRO, Pier Luca; LINDVALL, Mika; LIZOS, Dimitrios; STIEFL, Nikolaus Johannes; TEIXEIRA-FOUCHARD, Sylvie; ULLRICH, Thomas; WEILER, Sven; (151 pag.)WO2019/102256; (2019); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

2436-29-5, name is 3-(1,3-Dioxoisoindolin-2-yl)propanal, belongs to indolines-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Computed Properties of C11H9NO3

To a solution of 1-(1-benzyl-5-chloro-1H-indole-2-yl)-2-methylpropan-1-amine (0.44 mmol) in 10 mL of anhydrous DCM, was added aldehyde (0.44 mmol) and sodium triacetoxyborohydride (0.44 mmol) at 0 C. The mixture was stirred at room temperature overnight. The solution was poured into 10% aq. NaOH, and extracted with EtOAc (¡Á3). The organic layers were combined, washed with H2O (¡Á3), brine (¡Á3), dried (Na2SO4), filtered, and the filtrate was concentrated. The material was purified by flash chromatography (20% EtOAc:hexane) to yield 40 mg of title compound

The synthetic route of 2436-29-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Boyce, Rustum S.; Guo, Hongyan; Mendenhall, Kris G.; Walter, Annette O.; Wang, Weibo; Xia, Yia; US2006/84687; (2006); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem