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Chemical Structure| 638217-49-9 Chemical Structure| 638217-49-9

Structure of 638217-49-9

Chemical Structure| 638217-49-9

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Product Details of [ 638217-49-9 ]

CAS No. :638217-49-9
Formula : C18H26N2O4
M.W : 334.41
SMILES Code : O=C(N1C[C@H](N(C(OC(C)(C)C)=O)C)CC1)OCC2=CC=CC=C2
MDL No. :MFCD26960649

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Application In Synthesis of [ 638217-49-9 ]

* 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 [ 638217-49-9 ]

[ 638217-49-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 638217-49-9 ]
  • [ 392338-15-7 ]
YieldReaction ConditionsOperation in experiment
62% With hydrogen;5% palladium over charcoal; In ethanol; at 20℃; under 2585.81 Torr; for 44h; Preparation 47: tert-Butyl methyl[(3R)-pyrrolidin-3-yl]carbamate; A solution of the carbamate of preparation 46 (15.58 g, 46.6 mmol) in ethanol (150 ml) was hydrogenated in the presence of 5% Pd/C (1 g) at 50 psi at room temperature for a period of 18 hours. Further Pd/C (500 mg) was added and the resulting mixture hydrogenated under the same conditions for a further 26 hours. The catalyst was filtered off and the filtrate concentrated in vacuo. Purification by chromatography (DCM:MeOH:0.880 ammonia (100:0:0 changing to 90:10:1 by volume) gave the title compounds as a pale yellow oil (5.85 g, 62%). 1H NMR (400 MHz, CDCl3): delta 4.56 (1H, m), 3.06 (2H, m), 2.87 (1H, m), 2.79 (1H, m), 2.78 (3H, s), 2.54 (1 H, s), 1.95 (1H, m), 1.73 (1H, m), 1.43 (9H, s) ppm. MS (ESI) m/z 201 [M+H]+
With hydrogen;palladium 10% on activated carbon; In methanol; for 2h;Inert atmosphere; Step 2: tert-butyl methyl[(3R)-pyrrolidm-3-yl]carbamate; HN O- N' o /-Pd/C (wt. 10%, 400 mg) was added to a solution of benzyl (3R)-3-[(tert- butoxycarbonyl)(methyl)arnino]pyrrolidine-l-carboxylate (1.4 g, 4.2 mmol) in methanol (10.0 mL) under nitrogen. The mixture was stirred under hydrogen ballon for 2 h., and filtered. The filtrate was concentrated under reduced pressure to give the desired product which was directly used in the next step reaction without further purification. LCMS (M+Na)+: m/z = 201.3.
 

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