Category: pyrrolines

1193-54-0, 3,4-Dichloro-1H-pyrrole-2,5-dione is a pyrrolines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixture of 2-(7-methoxynaphthalen-1-yl)ethanamine (compound 3, 101 mg, 0.5 mmol), sodium acetate (82 mg, 1.0 mmol) and cyclic anhydrides 1.0 mmol) in 5mL acetic acid was heated to reflux for 3 h in a round bottomed flask. After the completion of reaction (as evidenced by TLC), the resulting mixture was concentrated under reduced pressure and washed with ethyl acetate (10 mL¡Á3), then the concentrated organic layer was purified by column chromatography on silica gel to obtain pure product., 1193-54-0

As the paragraph descriping shows that 1193-54-0 is playing an increasingly important role.

Reference£º
Article; Chang, Ying; Pi, Weiyi; Ang, Wei; Liu, Yuanyuan; Li, Chunlong; Zheng, Jiajia; Xiong, Li; Yang, Tao; Luo, Youfu; Bioorganic and Medicinal Chemistry Letters; vol. 24; 7; (2014); p. 1672 – 1676;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1334177-86-4,1-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oic acid,as a common compound, the synthetic route is as follows.

EDCI .HCI (0.13 g, 0.66 mmol, 1 .1 eq.) was added to a cloudy solution of compound 21 (0.61 g, 0.6 mmol, 1 .0 eq.) and Mal-dPEG8-OH (0.393 g, 0.66 mmol, 1 .1 eq.) in CHCI3 (25 mL). The clear solution was stirred at room temperature for 1 .5h., diluted with CHC (100 mL) washed with brine (2 x 100 mL), dried (MgS04) and evaporated under reduced pressure to give a yellow foam. Purification by flash column chromatography [CHCb/MeOH 0% to 6% in 1 % increments gave the product as a white foam (0.786 g, 82%). Analytical Data: RT 1 .44 min; MS (ES+) m/z (relative intensity) 1586 {[M + H]+ ,40), 1609 {[M + Na]+ , 100)

1334177-86-4, As the paragraph descriping shows that 1334177-86-4 is playing an increasingly important role.

Reference£º
Patent; MEDIMMUME LIMITED; HOWARD, Philip Wilson; DUNNY, Elizabeth; MASTERSON, Luke; (151 pag.)WO2017/137553; (2017); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

25021-08-3, 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid is a pyrrolines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

200 mg (0.594 mmol) of tert-butyl (14-amino-3,6,9,12-tetraoxatetradec-1-yl)carbamate, 111 mg (0.713 mmol) of (2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid and 410 mul (2.4 mmol) of N,N-diisopropylethylamine were dissolved in 6 ml of dimethylformamide, and 339 mg (0.892 mmol) of HATU were added. The reaction mixture was stirred at RT for 1 h and purified directly by preparative RP-HPLC (column: Reprosil 250*30; 10mu, flow rate: 50 ml/min, MeCN/water/0.1% TFA). The solvents were evaporated under reduced pressure and the residue was dried under high vacuum. This gave 130 mg (43% of theory) of tert-butyl [17-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-16-oxo-3,6,9,12-tetraoxa-15-azaheptadec-1-yl]carbamate. LC-MS (Method 1): Rt=0.71 min; MS (ESIpos): m/z=474 (M+H)+., 25021-08-3

As the paragraph descriping shows that 25021-08-3 is playing an increasingly important role.

Reference£º
Patent; Bayer Pharma Aktiengesellschaft; LERCHEN, Hans-Georg; REBSTOCK, Anne-Sophie; CANCHO GRANDE, Yolanda; MARX, Leo; STELTE-LUDWIG, Beatrix; TERJUNG, Carsten; MAHLERT, Christoph; GREVEN, Simone; SOMMER, Anette; BERNDT, Sandra; (684 pag.)US2018/169256; (2018); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.25021-08-3,2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid,as a common compound, the synthetic route is as follows.

Trifluoroacetic acid/N-{2-[2-(2-aminoethoxy)ethoxy]ethyl}-2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetamide (1:1) 200 mg (0.805 mmol) of tert-Butyl {2-[2-(2-aminoethoxy)ethoxy]ethyl}carbamate, 150 mg (0.966 mmol) of (2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid and 560 mul (3.2 mmol) of N,N-diisopropylethylamine were dissolved in 10 ml of dimethylformamide, and 459 mg (1.21 mmol) of HATU were added. The reaction mixture was stirred at RT for 30 minutes. The solvents were evaporated under reduced pressure and the residue was dissolved in dichloromethane. The organic phase was washed twice with 5% strength citric acid solution and dried over magnesium sulphate, and the solvent was evaporated under reduced pressure. The residue was purified using Biotage Isolera (silica gel, column 25 g SNAP, dichloromethane:methanol 98:2). This gave 276 mg (89% of theory) of tert-Butyl {2-[2-(2-{[(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetyl]amino}ethoxy)ethoxy]ethyl}carbamate. LC-MS (Method 1): Rt=0.67 min; MS (ESIpos): m/z=386 (M+H)+.

25021-08-3, 25021-08-3 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid 319935, apyrrolines compound, is more and more widely used in various fields.

Reference£º
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; LERCHEN, Hans-Georg; REBSTOCK, Anne-Sophie; CANCHO GRANDE, Yolanda; WITTROCK, Sven; BERNDT, Sandra; GRITZAN, Uwe; FITTING, Jenny; STELTE-LUDWIG, Beatrix; JONES, Patrick; MAHLERT, Christoph; VOTSMEIER, Christian; SCHOeNFELD, Dorian; TRAUTWEIN, Mark; WEBER, Ernst; PAWLOWSKI, Nikolaus; GREVEN, Simone; GLUeCK, Julian Marius; HAMMER, Stefanie; DIETZ, Lisa; MAeRSCH, Stephan; (357 pag.)US2020/138970; (2020); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

17057-04-4, 4-(2,5-Dioxo-2,5-dihydro-pyrrol-1-yl)-benzoicacid is a pyrrolines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

MeVal-Val-Dil-Dap-Phe-OtBu (compound 1, 35 mg, 0.044 mmol) was suspended in DMF (0.250 mL). 4-(2,5-Dioxo-2,5-dihydro-pyrrol-1-yl)-benzoic acid (11 mg, 0.049 mmol) and HATU (17 mg, 0.044 mmol) were added followedby DIEA (0.031 mL, 0.17 mmol). This reaction mixture was allowed to stir for 2.0 hr. HPLC analysis indicated completeconsumption of starting compound 1.[0565] Product was isolated via preparatory RP-HPLC, using a Phenomenex C12 Synergi Max-RP 80A Column (250x 21.20 mm). Eluent: linear gradient 10% to 80% MeCN/0.05% TFA (aq) over 8 minutes, then isocratic 80% MeCN/0.05%TFA (aq) for an additional 12 minutes. A total of 20 mg of pure product (14) was isolated (0.02 mmol, 46% yield). ESMSm/z 987.85 [M+H]+; 1019.41 [M+Na]+; 985.54 [M-H]-., 17057-04-4

As the paragraph descriping shows that 17057-04-4 is playing an increasingly important role.

Reference£º
Patent; Seattle Genetics, Inc.; Doronina, Svetlana O.; Senter, Peter D.; Toki, Brian E.; Ebens, Allen J.; Kline, Toni Beth; Polakis, Paul; Sliwkowski, Mark X.; Spencer, Susan D.; EP2486933; (2015); B1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

134272-64-3, N-(2-Aminoethyl)maleimide Hydrochloride is a pyrrolines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Reaction of commercially available Boc-Gly-Gly-Gly-OH (compound 8) with Nhydroxyxuccinimide and EDC coupling agent affords compound 9. Reaction of compound 9 with 1-(2-aminoethyl)-maleimide HC1 in the presence of a base such as diisopropyl ethyl amine (DIPEA) followed by Boc deprotection with HC1 in methoxymethyl ether gives compound 10. Reaction of compound 10 with glutamic anhydride gives compound 11. Reaction of compound 11 with DM? using EDC as coupling agent will give the desired product compound 12.

134272-64-3, The synthetic route of 134272-64-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; IMMUNOGEN, INC.; WIDDISON, Wayne, C.; WO2014/134457; (2014); A2;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1122-10-7,3,4-Dibromo-1H-pyrrole-2,5-dione,as a common compound, the synthetic route is as follows.

In a 50 mL two-necked flask,NaH (30 mg, 0.75 mmol, mass fraction 60%,Dispersion in paraffin) with 5mL DMF suspension stirring,Dropwise at -5 5mLDMF dissolved in 2,3-dibromo maleimide(127.5 mg, 0.5 mmol),After reaction at low temperature for 30 min,Methyl iodide (47 [mu] L, 0.75 mmol) was added dropwise,Low temperature reaction 30min,The reaction was quenched by dropwise addition of saturated NH4Cl solution,CH2Cl2 extraction,The organic layer was evaporated to dryness,Silica gel column chromatography,Petroleum ether: ethyl acetate = 30: 1 (v / v) to give white crystals(82a)Yield 69%., 1122-10-7

As the paragraph descriping shows that 1122-10-7 is playing an increasingly important role.

Reference£º
Patent; Ocean University of China; The Key Laboratory of Chemistry Natural Products of Guizhou Province and Chinese Academy; Zhu, Weiming; Ma, Hongguang; Wang, Liping; Xu, Zhihong; Zhang, Yapeng; Wang, Yi; Liu, Peipei; Hao, Jiejie; (142 pag.)CN106146475; (2016); A;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.25021-08-3,2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid,as a common compound, the synthetic route is as follows.

Trifluoroacetic acid/N-(2-aminoethyl)-2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetamide (1:1) The title compound was prepared by classical methods of peptide chemistry from commercially available (2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid and tert-Butyl (2-amino-ethyl)carbamate.

25021-08-3, The synthetic route of 25021-08-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; LERCHEN, Hans-Georg; REBSTOCK, Anne-Sophie; CANCHO GRANDE, Yolanda; WITTROCK, Sven; BERNDT, Sandra; GRITZAN, Uwe; FITTING, Jenny; STELTE-LUDWIG, Beatrix; JONES, Patrick; MAHLERT, Christoph; VOTSMEIER, Christian; SCHOeNFELD, Dorian; TRAUTWEIN, Mark; WEBER, Ernst; PAWLOWSKI, Nikolaus; GREVEN, Simone; GLUeCK, Julian Marius; HAMMER, Stefanie; DIETZ, Lisa; MAeRSCH, Stephan; (357 pag.)US2020/138970; (2020); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17057-04-4,4-(2,5-Dioxo-2,5-dihydro-pyrrol-1-yl)-benzoicacid,as a common compound, the synthetic route is as follows.

General procedure: Equimolar quantities of maleimide (2) and nitrones (5a-k and 6a-k) were refluxed in toluene (20 ml) and ethyl alcohol (5 ml) for 8-10 h (TLC monitoring using petroleum ether and hexane 1:1) followed by cooling with addition of dry ether. The products (7a-k and 8a-k) were separated out after filtration and recrystallized from toluene and petroleum ether mixture (1:1) to yield cis-isomers (7aa-7ka and 8aa-8ka). The mother liquor on further work up provided trans-isomers which were recrystallized from ethanol and diethyl ether mixture (1:1) (7aa’-7ka’ and 8aa’-8ka’) (Fig. 3).7 These stereoisomers were characterized by their 1H NMR, IR and mass spectra in addition to their melting points and elementary analysis. These stereoisomers have identical IR spectra and elemental analysis but differ in their melting points, 1H NMR and mass spectra.

17057-04-4, The synthetic route of 17057-04-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Anand, Preet; Singh, Baldev; Bioorganic and Medicinal Chemistry; vol. 20; 1; (2012); p. 521 – 530;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

55750-49-7, Ethyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate is a pyrrolines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

55750-49-7, A solution of 82 (278 mg, 0.55 minol) in Tesser?s Base (20 mL, i,4-dioxane/methanol/4M NaOH, 30:9:1 v/v) was stirred at room temperature for 10 minutes. The solution was then concentrated in vacuo to afford a yellow oil, which was used without further purification. To the crude oil was added a mixture of 45 (163 mg, 0.66 minol) in saturated aqueous sodium bicarbonate (14 mL), and the mixture stirred at room temperature for 5 minutes. Themixture was then extracted with dichloromethane (3 x), the combined organic layers dried over anhydrous magnesium sulfate, filtered and the solution concentrated in vacuo. Purification by column chromatography (EtOAc/hexanes, 1:2) afforded the title compound 83 (100 mg, 50%) as a yellow oil. [aID232 = -1.0 (c 1.00 in CHCI3); 1H NMR (400 MHz, CDCI3) oe 1.33-1.41 (2H, m, H-3?), 1.44 (9H, s, Boc), 1.59-1.69 (2H, m, H-4?), 1.81-1.95(2H, m, H-2?), 2.39 (3H, s, 3?-Me), 3.51 (2H, t, J = 7.2 Hz, H-5?), 4.97-5.01 (iH, m, H-i?),5.09 (iH, d, J = 7.4 Hz, NH), 6.69 (2H, 5, H-3, H-4); 13C NMR (100 MHz, CDCI3) oe 11.5 (CH3, 3?-Me), 22.4 (CH2, C-3?), 27.9 (CH2, C-4?), 28.3 (3 x CH3, Boc), 33.4 (CH2, C-2?),37.2 (CH2, C-5?), 48.0 (CH, C-i?), 80.4 (C, Boc), 134.1 (2 x CH, C-3, C-4), i55.0 (C, Boc),i67.i (C, C-3?), i70.8 (2 x C, C-2, C-5), 179.1 (C, C-5?); Vmax (cm1) 3336, 2925, i702,1514, i367, ii64, 828; HRMS-ESI [M+Na] Calcd. for C17H24N4O5Na 387.i639, found387. i652.

The synthetic route of 55750-49-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SAMMUT, Ivan Andrew; HARRISON, Joanne Clare; HEWITT, Russell James; READ, Morgayn Iona; STANLEY, Nathan John; WOODS, Laura Molly; KUEH, Jui Thiang Brian; JAY-SMITH, Morgan; SMITH, Robin Andrew James; GILES, Gregory; LARSEN, Lesley; RENNISON, David; BRIMBLE, Margaret Anne; LARSEN, David Samuel; (209 pag.)WO2017/95237; (2017); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem