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Chemical Structure| 75405-06-0

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Product Details of [ 75405-06-0 ]

CAS No. :75405-06-0
Formula : C5H10N2
M.W : 98.15
SMILES Code : CCC(CC#N)N
MDL No. :MFCD02101363

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Application In Synthesis of [ 75405-06-0 ]

* 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 [ 75405-06-0 ]

[ 75405-06-0 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 75405-06-0 ]
  • [ 96-81-1 ]
  • 3-aminopentanenitrile N-acetyl-L-valine salt [ No CAS ]
YieldReaction ConditionsOperation in experiment
84.8% In methanol; ethanol; cyclohexane; water; at 5 - 75℃; for 25.5h;Heating / reflux; Resolution of racemate;Product distribution / selectivity; A 31 flask equipped with mechanical stirrer, thermometer, dropping funnel, oil bath, was charged with <strong>[96-81-1]N-acetyl-L-valine</strong> (200.0 g) denaturated ethanol (denatured with about 5% methanol and 3% cyclohexane) (2000 mi) and water (100 ml). The mixture was heated under stirring to 65-70C and 3-aminopentanenitrile (206.4 g) was added within 30 min. The solution was heated to reflux (about 75C) until obtaining a complete clear solution which was then slowly cooled to 65C. Always under stirring the mixture was seeded with some diasteromerically pure 3-amino- pentanenitrile-L-acetyl-L-valine salt and stirred at 60C for 1 hour. The thick suspension was then slowly cooled to 20C over a period of 3 hours and stirred at 20C for 18 hours (overnight). The suspension was hence cooled to 5 C and stirred 3 hours. The precipitate salt was filtered and washed with denaturated ethanol (3 X 100 ml) and dried in an vacuum try-drier at 40 C/10 mbar until constant weight, obtaining 3-amino-pentanenitrile-L-acetyl-L-valine salt (228.7 g), white crystalline solid (yield 84. 8%) having optical purity 97.7%.
In ethanol; water; at 60 - 70℃; for 0.5h;Heating / reflux; Resolution of racemate;Product distribution / selectivity; <strong>[96-81-1]N-acetyl-L-valine</strong> (145.4 g, 0.91 mol eq) is combined with ethanol (1425 mL) and water (75 mL) in a vessel equipped with agitation and condenser. The mixture is heated to 65-70C followed by the addition (with a syringe) of racemic 3- aminopentanenitrile. The mixture is heated at reflux until a complete solution is obtained. The mixture is cooled to 60C and held at this temperature for a minimum of 30 minutes. The mixture is cooled to 0C and the salt is isolated by filtration.
  • 2
  • [ 75405-06-0 ]
  • [ 96-81-1 ]
  • R-3-aminopentanenitrile N-acetyl-L-valine salt [ No CAS ]
YieldReaction ConditionsOperation in experiment
60% In methanol; ethanol; cyclohexane; water; at 0 - 75℃; for 11h;Resolution of racemate; Heating / reflux; A 31 flask equipped with mechanical stirrer, thermometer, dropping funnel, oil bath, was charged with <strong>[96-81-1]N-acetyl-L-valine</strong> (145.4 g), denaturated ethanol (denatured with about 5% methanol and 3% cyclohexane) (1425 ml) and water (75 ml). The mixture was heated under stirring to 65-70C and150 g of 3-aminopentanenitrile were added. The solution was heated to reflux (about 75C) until obtaining a complete clear solution that was then slowly cooled to 65C. Always under stirring the mixture was seeded with some diasteromerically pure 3-amino-pentanenitrile-L-acetyl-L- valine salt and stirred at 60C for 1 hour. The thick suspension was then cooled to 0C over a period of 3 hours and stirred at 0C for 2 hours. The obtained salt was filtered and washed with 2 X 75 mi of ethanol. The optical purity of the wet product was 89.8% (A%). The wet salt was charged in a 21 flask with standard equipment and 900 ml of denaturated ethanol were added. The suspension was heated to reflux, stirred for 1 hour at reflux temperature and then cooled to RT over a period of 2 hours. After 2 more hours of stirring at RT, the obtained salt was filtered and washed with 2 X 150 ml of denaturated ethanol. The product was dried at 40C obtaining 118,3 g of 3-aminopentanenitrile-L-acetyl-L-valine salt, white crystalline solid (optical purity: 99,8% R; yield: 60% of theoretical).
 

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