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Chemical Structure| 15028-41-8 Chemical Structure| 15028-41-8
Chemical Structure| 15028-41-8

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Product Details of H-Aib-OMe.HCl

CAS No. :15028-41-8
Formula : C5H12ClNO2
M.W : 153.61
SMILES Code : Cl.NC(C(=O)OC)(C)C
MDL No. :MFCD00214247
InChI Key :NVWZNEDLYYLQJC-UHFFFAOYSA-N
Pubchem ID :13258034

Safety of H-Aib-OMe.HCl

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Application In Synthesis of H-Aib-OMe.HCl

* 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 [ 15028-41-8 ]

[ 15028-41-8 ] Synthesis Path-Downstream   1~7

  • 1
  • [ 34404-33-6 ]
  • [ 15028-41-8 ]
  • [ 72086-77-2 ]
  • 2
  • [ 5545-54-0 ]
  • [ 15028-41-8 ]
  • [ 98607-20-6 ]
  • 3
  • [ 15028-41-8 ]
  • [ 426463-05-0 ]
  • [ 957194-63-7 ]
YieldReaction ConditionsOperation in experiment
78% With triethylamine; In ethanol; at 150℃; for 0.5h;Microwave irradiation; 2-(5-Iodo-3-nitro-pyridin-2-ylamino)-2-methyl-propionic acid methyl ester2-Chloro-5-iodo-3-nitro-pyridine (1.61 g) was dissolved in ethanol. Methyl a- aminoisobutyrate HCl was added (2.4 eq) followed by triethylamine (2.4 eq). The reaction mixture was heated to 1500C in a microwave oven for 30 minutes. The reaction mixture was concentrated to dryness and triturated with H2O. Silica gel chromatography of the resulting brown solid afforded the title compound as a bright yellow crystalline solid (78 % yield based on recovered starting material). M.p. 121-122 0C, 1H-NMR (CDCl3, 400 MHz) delta 1.56 (s, 3H), 1.66 (s, 3H), 3.67 (s, 3H), 8.53 (s, IH), 8.47 (d, J= 2.0 Hz, IH), 8.68 (d, J= 2.3 Hz, IH).
  • 4
  • [ 453562-71-5 ]
  • [ 15028-41-8 ]
  • [ 530-62-1 ]
  • [ 945103-85-5 ]
YieldReaction ConditionsOperation in experiment
Stage g: 3-(1-Acetyl-3,3-dimethyl-2,3-dihydro-1H-indol-6-yl)-5,5-dimethylimidazolidine-2,4-dione A solution of 6.6 g of 1,1'-carbonylbis(1H-imidazole) and 460 mg of 1H-imidazole in 50 mL of tetrahydrofuran is stirred under argon and cooled in an ice bath at 0 C. To this solution is added a suspension of 6.9 g of <strong>[453562-71-5]1-acetyl-3,3-dimethylindolin-6-amine</strong> obtained in stage f) below in 50 mL of tetrahydrofuran. After stirring for one hour, 9.5 mL of triethylamine and 5.2 g of methyl 2-methylalaninate hydrochloride are added and the mixture is stirred for two hours at room temperature and then refluxed for 17 hours. After cooling to room temperature, the mixture is diluted with 800 mL of water and the precipitate formed is filtered off, washed with four times 25 mL of water and with three times 15 mL of diethyl ether and then dried to give 8 g of 3-(1-acetyl-3,3-dimethyl-2,3-dihydro-1H-indol-6-yl)-5,5-dimethylimidazolidine-2,4-dione in the form of a beige-coloured solid, the characteristics of which are as follows: LCMS: RT=3.19 min; m/z=316 [M+H]+; m/z=314 [M-H]-
Steps A • and B:5,17 mmol ' of 1,1' -Carbonyldimidazole and 0,86- -mmo. ofimidazole are dissolved in 10 ml THF and cooled'to 0C. Asolution of 'the aromatic amine . (4,31 mmol ) in a .suitable'amount of THF' '(5 to 10 ml) is added over .15 mini..The.reaction mixture "is allowed to 'reach RT and stirred, f.oranother 2h. Then 4,3 'mmol of Net3 and 4,3 mmol .of ..2-'amino-2-methyl-propionic = acid methyl. ester ' .acid•hydrochlorid are added and ' the resulting mixture -,isstirred''until completion of the reaction. After theevaporation of the solvent ' the crude product is pure,enough • for ' the next step. Example 293- (l-Acetyl-3, 3-dimethyl-2, 3-dihydro-lH-indol-6-yl) -5, 5-• dimethyl-1- [2- (pyrazin-2- ylamino) -pyridin-4-ylmethyl] -• imi-dazoridine-2, 4-dione• Start-ing /from 1- (6^Amino-3, 3'-dimethyl-2, 3-dihydro-indol-1-yl) -ethanohe in step • A and' using steps,, B, C, D .arid* Ewith 2-aminopyrazine•M+H+ measured =• 50-0.24LC/MS retention time [min] =1.3.3- Example 7la ' .- . . , .3-(l-Acetyl-3,3-dimethyl-2,3-dihydro-lH-indol-6-yl)-5,5-dimethyl-imidazolidine-2,4- dione To a ' solution." of -838 mg d'i-imidazol-1-yl-methanone..and 58. mg imidazole in 10 ml • tetrahydrofuran a solution of 880 mg • 1-(6-amino-3f3-dimethyl-2,3-dihydro-indol-l-yl)-ethanone in 5 ml tetrahydrofuran was slowly added at 0C. After stirring at 0C for 90 minutes. 0.60 ml triethylamine and 661 mg 2-amino-2-methyl-propionic acid methyl- ester hydrochloride were added and the reaction mixture was allowed to warirv up to room temperature. After, 2 hours stirring at room temperature the solution was •heated for 6 hours at - 70C.' After cooling to ,room temperature'the solvent of the mixture was removed under reduced pressure and • the residue was purified by flash chromatography on silica gel with a n-heptane/ ethylacetate gradient. The fractions -containing the product were combined .and evaporated to yield a white solid.Yield: 920 mg'M+H-f- measured = 3161H-NMR (400 MHz, DMSO/TMS) : d = 8.50 (s, 1H) ; 7.93 (s, 1H);'7.33 (d, 1H) ; 6.97. - (dd, • 1H) ; 3.90 (s, 2H) ; 2.17 (s, 3H); 1.50 (s, 6H); 1.33 (s, 6H)
  • 5
  • [ 15028-41-8 ]
  • [ 146621-92-3 ]
  • [ 1366062-84-1 ]
YieldReaction ConditionsOperation in experiment
77% Example 18A Methyl N-[(tert-butoxycarbonyl)amino][3-(trifluoromethyl)phenyl]acetyl}-2-methylalaninate 450 mg (2.35 mmol) of EDC were added to a mixture of 500 mg (1.57 mmol) of [(tert-butoxycarbonyl)amino][3-(trifluoromethyl)phenyl]acetic acid and 317 mg (2.35 mmol) of HOBt in 10 ml of DMF, and the mixture was stirred at RT for 20 min. 313 mg (2.04 mmol) of methyl 2-methylalaninate hydrochloride and 382 mul (2.19 mmol) of N,N'-diisopropylethylamine were added and the mixture was stirrred overnight. For purification, the entire reaction mixture was separated by preparative HPLC [Method 6]. The appropriate fraction was concentrated on a rotary evaporator and the residue was dried under high vacuum. This gave 502 mg (77% of theory) of the title compound. LC-MS [Method 3]: Rt=1.28 min; MS [ESIpos]: m/z=319 (M+H-BOC)+; [ESIneg]: m/z=417 (M-H)-. 1H-NMR (400 MHz, DMSO-d6): delta [ppm]=1.26 (s, 3H), 1.38 (d, 12H), 3.44 (s, 3H), 5.31 (d, 1H), 7.45 (br. d, 1H), 7.56-7.62 (m, 1H), 7.63-7.71 (m, 2H), 7.75 (br. s, 1H), 8.61-8.69 (m, 1H).
  • 6
  • [ 66176-17-8 ]
  • [ 15028-41-8 ]
  • C13H18N2O3 [ No CAS ]
  • 7
  • [ 15028-41-8 ]
  • [ 171178-46-4 ]
  • methyl 2-(5-(tert-butoxycarbonylamino)-2-chloroisonicotinamido)-2-methylpropanoate [ No CAS ]
 

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