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Chemical Structure| 948551-71-1 Chemical Structure| 948551-71-1

Structure of 948551-71-1

Chemical Structure| 948551-71-1

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Product Details of [ 948551-71-1 ]

CAS No. :948551-71-1
Formula : C27H28N6O4
M.W : 500.55
SMILES Code : O=C(OCC)CCN(C1=NC=CC=C1)C(C2=CC=C(NC)C(NC(CNC3=CC=C(C#N)C=C3)=O)=C2)=O

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Application In Synthesis of [ 948551-71-1 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 948551-71-1 ]

[ 948551-71-1 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 948551-71-1 ]
  • [ 211915-84-3 ]
YieldReaction ConditionsOperation in experiment
92% With acetic acid; at 110℃; for 2h;Large scale; The intermediate of the formula IV (10 kg, 20 mol) and 60 L of glacial acetic acid were added to the reaction vessel, and the mixture was heated to 110 C for 2 h, and the reaction starting material was detected to disappear. The reaction solution was concentrated to a slurry under reduced pressure, and 10 L of purified water was added thereto, and the pH of the aqueous solution was adjusted to 8-9 with NaOH, followed by suction filtration, and the filter cake was washed three times with purified water, and dried to obtain an intermediate solid of formula I 8.88. Kg, yield 92%, purity 98%
90.8% With acetic acid; In acetic acid butyl ester; at 85 - 90℃; The intermediate (S3) obtained in step 1,(1.6 mol) was added to 2.5 kgButyl acetate and 0.3 kg of glacial acetic acid,Heating to 85 to 90 C for 3 to 4 hours.Followed by distilling off the n-butyl acetate and glacial acetic acid at 60 to 80 C under reduced pressure.After the distillation to room temperature,30 L of dichloromethane was added,After stirring, 10 kg of a 5% aqueous solution of sodium carbonate was added thereto,Stirred for 10 minutes,The dichloromethane layer was separated,And washed twice with 5 L of water.20 ~ 50 under the vacuum concentration to thick,2 L of 5: 1 volume ratio of B was addedAlcohol, methanol mixed solvent,The mixture was heated to 40 to 45 C and stirred for 30 minutesAnd then slowly cooled to 0 ~ 10 C for 2 hours stirring crystallization,Filtration and drying in vacuo gave 0.70 kg of intermediate (S4) in 90.8% yield.
83.3% In a 2000-liter reactor, 500 kg of methylene chloride and 48 kg of acetic acid were pumped in. The feed port was opened, 100 kg of compound 4 was injected, and the steam was heated to 80-85 oC for 10 hours. The steam was turned off, and the water was jacketed and cooled to room temperature. Aqueous ammonia is slowly added to the bath and the pH is adjusted to pH=9. The mixture is allowed to stand for a while. The organic phase is washed once with water, dried and filtered. The filtrate is withdrawn into the reactor and stirred. The hot water is pumped into the jacket and the distillation is repeated under reduced pressure. Chloroethane (applicable) to dryness; 125kg absolute ethanol pumped in, stirring, steam heated to reflux, the residue dissolved and clarified, then steam is turned off, jacketed with tap water, slowly cooled to room temperature, rejection filter, a small amount of anhydrous ethanol Washing, drying, inspection, packaging, storage; get white solid 80kg, HPLC purity 99.1%, molar yield 83.3%;
120 g In toluene;Reflux; Example 2. Preparation of ethyl 3-(2-((4-cyanophenylamino)methyl)- l-methyl-N- (pyridin-2- yl)-IH-benzo[d]- imidazole-5-carboxamido) propanoate of Formula (IV) DAB Glycin-CDI Complex obtained in Example 1 was stirred in 650 ml toluene. Added 100 g (0.292 mol) of ethyl 3-(3-amino-4-(methyl amino)-N-(pyridin-2-yl)benzamido)propanoate of Formula (VI) to the reaction mass and stirred for 3 hours at -45-50C. The reaction mass was further refluxed for 3 hours. The reaction mass was cooled to 75-80C, added 50 ml ethanol, further cooled to 20-25C and stirred for 6 hours. The solid was isolated by filtration and washed with 100 ml toluene. The wet cake was stirred in 500 ml water at 20-25C for about 1 hour. The solid was isolated by filtration, washed with 100 ml water and dried in vacuum below 60 C. Yield: 120 g Efficiency: 85%

 

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