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Chemical Structure| 172348-86-6 Chemical Structure| 172348-86-6

Structure of 172348-86-6

Chemical Structure| 172348-86-6

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Product Details of [ 172348-86-6 ]

CAS No. :172348-86-6
Formula : C14H18N2O2
M.W : 246.30
SMILES Code : O=C(OC(C)(C)C)NCCC1=CC=C(C#N)C=C1
MDL No. :MFCD10687163

Safety of [ 172348-86-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338

Application In Synthesis of [ 172348-86-6 ]

* 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 [ 172348-86-6 ]

[ 172348-86-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 557-21-1 ]
  • [ 120157-97-3 ]
  • [ 172348-86-6 ]
YieldReaction ConditionsOperation in experiment
88.9% tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 150℃; for 0.333333h;Microwave irradiation; tert-Butyl [2-(4-cyanophenyl)ethyl]carbamate; tert-Butyl [2-(4-bromophenyl)ethyl]carbamate (0.52g, 1.73mmol) was dissolved in dry DMF (17mL) under nitrogen atmosphere. Zinc cyanide (0.41g, 3.46mmol) and tetrakis(triphenylphosphine)palladium (O.l?g, 0.14mmol) was added. The reaction mixture was heated in a microwave reactor at 150C for 20mins. The procedure was repeated two more times with equal amount of starting material and the resulting three mixtures were combined. The mixture was diluted with EtOAc, washed with saturated aqueous NaHCO3 and water, dried with Na2SO4, filtered and evaporated. The crude product was purified using Biotage Horizon HPFC system (40+M column, isocratic run DCM/MeOH (99.5:0.5, 96OmL), gradient run DCM/MeOH (99.5:0.5-92:8, 24OmL), isocratic run DCM/MeOH (92:8, 72OmL)) affording the title compound (1.14g, 88.9%). 1H NMR (500MHz, CDCl3): 6 1.44 (s, 9H), 2.88 (t, 2H), 3.40 (q, 2H), 4.58 (bs, IH), 7.32 (d, 2H), 7.61 (d, 2H); Mass Spectrum: M+it 247.
31% tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 150℃; for 0.333333h;Microwave irradiation; t-Butyl 2-(4-cyanophenyl)ethylcarbamate (114) Compound 113 (530 mg, 1.8 mmol) was dissolved in dry DMF (17 mL) under N2. Zn(CN)2 (416 mg, 3.6 mmol) and Pd(PPh3)4 (200 mg, 0.18 mmol) was added. The reaction mixture was stirred and heated at 150 C. in a microwave instrument (CEM Discover) for 20 min and the reaction mixture was then concentrated in vacuo. The residue was purified by flash chromatography on silica gel eluding with EtOAc/hexanes (20~80%) to yield 114 (540 mg, 31%) as a white solid. MS (APCI, negative): m/z 245 [M-H]+.
  • 2
  • [ 557-21-1 ]
  • [ 120157-97-3 ]
  • [ 172348-86-6 ]
YieldReaction ConditionsOperation in experiment
73% With 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene;tris-(dibenzylideneacetone)dipalladium(0); In N,N-dimethyl-formamide; at 100℃; for 18h; 2. A mixture of tert-butyl 4-bromophenethylcarbamate (750 mg, 2.5 mmol, 1.0 eq.) and Zn(CN)2 (439 mg, 3.75 mmol, 1.5 eq.) in dry DMF (15 ml) was degassed with argon for 15 min. Xanthphos (290 mg, 0.5 mmol, 0.2 eq.) and Pd2(dba)3 (229 mg, 0.25 mmol, 0.1 eq.) were added to the reaction mixture and it was heated to 100 C for 18 h. The reaction mixture was diluted with water (40 ml) and extracted with ethyl acetate (2 x 50 ml). The organic layer was washed with brine (50 ml) and dried over Na2SO4. The solvent was evaporated under reduced pressure and the crude product was purified by column chromatography (neutral alumina, 10 % ethyl acetate in hexanes) to yield the desired product as a reddish solid. Yield: 73 % (450 mg, 1.83 mmol)
 

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