Category: pyrrolines

151038-94-7, The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism. If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular.151038-94-7, name is 6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanehydrazide 2,2,2-trifluoroacetate. A new synthetic method of this compound is introduced below.

8 mg (7.5 mumol) of N-(3-carboxypropyl)-N-methyl-L-valyl-N-[(3R,4S,5S)-3-methoxy-1-{(2S)-2-[(1R,2R)-1-methoxy-2-methyl-3-oxo-3-{[(2S,3E)-1-phenyl-4-(4-sulphophenyl)but-3-en-2-yl]amino}propyl]pyrrolidin-1-yl}-5-methyl-1-oxoheptan-4-yl]-N-methyl-L-valinamide, 2.8 mg (8.2 mumol) of 6-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanehydrazide trifluoroacetate, 3.4 mg (9 mumol) of HATU and 3.9 mul of Huenig’s base were stirred in 0.77 ml of DMF at RT for 20 h. Subsequently, the reaction mixture was purified by prep. HPLC. [2213] 3 mg (31% of theory) of the title compound were obtained. [2214] LC-MS (Method 1): Rt=0.90 min; MS (ESIpos): m/z=1164 (M+H)+, 151038-94-7

Thank you very much for taking the time to read this article. If you are also interested in other aspects of 6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanehydrazide 2,2,2-trifluoroacetate, you can also browse my other articles.

Reference£º
Patent; Lerchen, Hans-Georg; Hammer, Stefanie; Harrenga, Axel; Kopitz, Charlotte Christine; Nising, Carl Friedrich; Sommer, Anette; Stelte-Luowig, Beatrix; Mahlert, Christoph; Schuhmacher, Joachim; Golfier, Sven; Greven, Simone; Bruder, Sandra; US2015/23989; (2015); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.134272-64-3, name is N-(2-Aminoethyl)maleimide Hydrochloride. An updated downstream synthesis route of 134272-64-3 as follows., 134272-64-3

Step 2: To a solution of the NHS ester, compound 6a (12.3 mg, 0.011 mmol) and N-(2- aminoethyl)maleimide hydrochloride (2.0 mg, 0.011 mmol) in anhydrous dichloromethane (0.3 niL) was added DIPEA (0.0022 niL, 0.013 mmol). The mixture was stirred at room temperature for 3 hours then it was stripped under reduced pressure. The residue was purified by semi-preparative reverse phase HPLC (CI 8 column, CH3CN/H2O). The fractions that contained pure product were combined, frozen and lyophilized to give the desired maleimide, compound D6 (10 mg, 80% yield). LCMS = 8.3 min (15 min method). MS (m/z): 1181.8 (M + 1)+., 134272-64-3

Thank you very much for taking the time to read this article. If you are also interested in other aspects of N-(2-Aminoethyl)maleimide Hydrochloride, you can also browse my other articles.

Reference£º
Patent; IMMUNOGEN, INC.; KOVTUN, Yelena; TAVARES, Daniel; RUI, Lingyun; CHITTENDEN, Thomas; (386 pag.)WO2017/4026; (2017); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

1334177-86-4, Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.1334177-86-4, name is 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, below Introduce a new synthetic route.

N-(3-Dimethylaminopropyl)-N’-ethylcarbodiimide (28 mg, 0.146 mmol, 1 eq) was added to a solution of 105 (203 mg, 0.146 mmol) and maleimide-PEG8 acid (87 mg, 0.146 mmol) in chloroform (5 mL). The reaction was stirred for 1 .5 h then diluted with chloroform (50 mL), washed with water (50 mL), brine (30 mL), dried over magnesium sulphate, filtered and evaporated. Flash chromatography [gradient elution 100% DCM to 90% DCM/10% methanol] gave 106 as a pale yellow solid (205 mg, 72%). LC/MS: RT 5.75 min; MS (ES+) m/z (relative intensity) 982.90 (100), 1963.70 (5)., 1334177-86-4

A chemical reaction often occurs in steps, although it may not always be obvious to an observer. Thank you very much for taking the time to read this article. If you are also interested in other aspects of 1334177-86-4, you can also browse my other articles.

Reference£º
Patent; VAN BERKEL, Patricius Hendrikus Cornelis; HOWARD, Philip Wilson; (308 pag.)WO2016/166304; (2016); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

One of the major reasons is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time, to discover the sequence of events that occur at the molecular level. 872-32-2, name is 2-Methyl-1-pyrroline, introduce a new downstream synthesis route., 872-32-2

To a solution of 5-methyl-3,4-dihydro-2H-pyrrole (2.50 g, 30.0 mmol) in CCl4 (100 mL) was added N-chlorosuccinimide (32.00 g, 240 mmol), and the mixture was then heated to reflux for 72 hours. The reaction mixture was cooled to 0¡ã C. The formed precipitate was filtered off, and the filtrate was concentrated under reduced pressure. The residue was dissolved in methanol (100 mL), followed by the addition of sodium methoxide (9.80 g, 180 mmol). The resulting suspension was heated to reflux and stirred for 1.5 h. The solvent was evaporated, and the residue was suspended in ether. The solid was filtered off, and the filtrate was concentrated under reduced pressure. The residue was dissolved in DCM (100 mL) and 2 M HCl (100 mL). The biphasic solution was stirred for 10 min. The organic layer was separated, dried over MgSO4, filtered and evaporated. The crude oil was subjected to chromatography purification on silica gel eluting with EtOAc and Hexanes to afford the title compound (2.5 g, 52percent) as an orange solid. MS (ES+) C6H6ClNO2 requires: 159. found: 160 [M+H]+.

This molecular description is the mechanism of the reaction; it describes how individual atoms, ions, or molecules interact to form particular products.If you are interested, you can also browse other articles of 872-32-2. We look forward to the emergence of more reaction modes in the future.

Reference£º
Patent; Hodous, Brian L.; Kim, Joseph L.; Wilson, Kevin J.; Wilson, Douglas; Zhang, Yulian; US2015/111887; (2015); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

766-36-9, Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.766-36-9, name is 3-Ethyl-4-methyl-2,5-dihydro-1H-pyrrol-2-one, below Introduce a new synthetic route.

766-36-9, Compound A is added in a reaction vessel at a mass ratio of 1:6:3-Ethyl-4-methyl-2-pyrrolinone and n-heptane,The mixture was heated to 70¡ãC to dissolve all the solids, and the temperature was controlled at 90-100¡ãC. Compound B: phenylethyl isocyanate was slowly added dropwise with a molar ratio of Compound B to Compound A of 1.5:1, at which temperature the reaction 7 hour,In the HPLC system, the content of compound A was less than 5.0percent. The heating was stopped, and the temperature was lowered to 15¡ã C. with stirring. The second step:Methyl tert-butyl ether and n-heptane were added dropwise to the mixture, and the mixture was stirred at this temperature for 5 hours. The mixture was filtered and the filter cake was mixed with n-heptane:methyl tert-butyl ether ( The mass ratio of 1:1) was washed twice. Each time the amount of compound A was 1 times the mass, and the compound C was dried under vacuum at 45¡ãC.The yield was 90.0percent or more, and the HPLC purity of compound C was greater than 99.5percent.

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps. you can also browse my other articles about 3-Ethyl-4-methyl-2,5-dihydro-1H-pyrrol-2-one

Reference£º
Patent; Yangzijiang Pharmaceutical Group Jiangsu Haici Biological Pharmaceutical Co., Ltd.; Guo Weijun; Wang Qinghui; Niu Mingyu; Ma Lijin; Shi Dengjian; (5 pag.)CN107382813; (2017); A;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism. If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular.55750-49-7, name is Ethyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate. A new synthetic method of this compound is introduced below., 55750-49-7

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.

Thank you very much for taking the time to read this article. If you are also interested in other aspects of 55750-49-7, you can also browse my other articles.

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

Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.1122-10-7, name is 3,4-Dibromo-1H-pyrrole-2,5-dione, below Introduce a new synthetic route., 1122-10-7

General procedure: To the solution of dibromomaleimide 1a orN-methyldibromomaleimide 1b (1 mmol) in THF (20 ml)was added solution of the thiophenol (2.2 mmol) and triethylamine(2.2 mmol) in one portion. The resulting solutionwas stirred at room temperature for 1 h, then evaporated invacuo and the residue was redissolved in ethyl acetate-water(20 + 20 ml) mixture. The organic layer was separated,washed with aq. NaHCO3, dried over anhydrous Na2SO4and evaporated. The residue was purified by flash chromatography(ethyl acetate: petroleum ether 3:1).

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps. you can also browse my other articles about 3,4-Dibromo-1H-pyrrole-2,5-dione

Reference£º
Article; Panov, Alexey A.; Lavrenov, Sergey N.; Simonov, Alexander Y.; Mirchink, Elena P.; Isakova, Elena B.; Trenin, Alexey S.; Journal of Antibiotics; vol. 72; 2; (2019); p. 122 – 124;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

One of the major reasons is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time, to discover the sequence of events that occur at the molecular level. 55750-48-6, name is Methyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate, introduce a new downstream synthesis route., 55750-48-6

55750-48-6, A mixture of N-Boc-ethylenediamine (5.6 mL, 35.4 mmol, 1.1 eq. ) and saturated NaHCO3(60 mL) was cooled to 0 , to which compound 409 (5.00 g, 32.2 mmol, 1.0 eq. ) was added in portions. After stirring at 0 for 30 min, the reaction was warmed to r.t. and stirred for 1 h. The precipitate was collected by filtration and washed with cold water, then dissolved in EtOAc and washed with brine, dried over anhydrous Na2SO4and concentrated to give a white solid (6.69 g, 87%yield) .

This molecular description is the mechanism of the reaction; it describes how individual atoms, ions, or molecules interact to form particular products.If you are interested, you can also browse other articles of 55750-48-6. We look forward to the emergence of more reaction modes in the future.

Reference£º
Patent; HANGZHOU DAC BIOTECH CO. LTD; ZHAO, Robert Yongxin; YANG, Qingliang; HUANG, Yuanyuan; ZHAO, Linyao; GAI, Shun; YE, Hangbo; LEI, Jun; XU, Yifang; CAO, Mingjun; GUO, Huihui; JIA, Junxiang; TONG, Qianqian; LI, Wenjun; ZHOU, Xiaomai; XIE, Hongsheng; BAI, Lu; CAI, Xiang; ZHUO, Xiaotao; ZHANG, Xiuzheng; ZHENG, Jun; (424 pag.)WO2019/127607; (2019); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.57079-01-3, name is 11-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)undecanoic acid. Here is a downstream synthesis route of the compound 57079-01-3. 57079-01-3

57079-01-3, N-Maleimidyunndecanoic acid (171.4 g, 0.61 mol) and ethyl acetate (300 ml) were added to a 500 ml three-necked flaskand then thionyl chloride (142 g, 1.21 mol) A lot of gas released.After refluxing for 3h,almost no gas was released, the ethyl acetate was removed by concentration and excess thionyl chloride was added, and 200 ml of ethyl acetate was added to remove the residualacidonce toobtain crude N-maleimido undecanoyl chloride.The crude product was dissolved in 200 ml of ethyl acetate and added dropwise to a solution of N-hydroxysuccinimide (92 g, 0.8 mol) and diisopropylethylamine (129 g, 1.0 mol) in 300 ml of ethyl acetate. IceWater cooling control temperature does not exceed 20 , drip finished room temperature stirring 3h.The reaction mixture was washed with 200 ml of water to remove diisopropylethylamine hydrochloride, 100 ml of 1N hydrochloric acid to remove excess diisopropylethylamine, 200 ml of saturated saline, washed, dried and concentrated to give196 g of a white solid, ethyl acetate and petroleum Ether mixed solvent was recrystallized to give a white solid 152g,HPLC purity 98.2%, yield 66.1%.

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps. you can also browse my other articles about 57079-01-3

Reference£º
Patent; Suzhou Haofan Biological Technology Co., Ltd.; Lv Minjie; Zhang Haiyan; Wang Guichun; Sun Fangchao; (10 pag.)CN105037237; (2017); B;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.63468-63-3, name is 2,5-Dihydro-1H-pyrrole hydrochloride. Here is a downstream synthesis route of the compound 63468-63-3. 63468-63-3

63468-63-3, To a solution of 2,5-dihydro-lH-pyrrole hydrochloride (12 g, 0.11 mol) in H2O (100 niL) was added EtOAc (100 niL) and K2CO3 (89 g, 0.64 mol). The mixture was stirred at RT for 30 min. Cbz-Cl (22 g, 0.13 mol) was added dropwise at 0C and the mixture was stirred for 1 h. The organic layer was separated and the aqueous layer was extracted with EtOAc (3×20 mL). The combined organic layers were dried over Na2SO4. The solvent was removed in vacuo to afford the crude product (25 g, 95%), as a light oil, which was carried directly to the next step.

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps. you can also browse my other articles about 63468-63-3

Reference£º
Patent; SEPRACOR INC.; BURDI, Douglas; SPEAR, Kerry, L.; HARDY, Larry, Wendell; WO2010/114971; (2010); A1;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem