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Chemical Structure| 142842-93-1 Chemical Structure| 142842-93-1

Structure of 142842-93-1

Chemical Structure| 142842-93-1

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Product Details of [ 142842-93-1 ]

CAS No. :142842-93-1
Formula : C11H18O5
M.W : 230.26
SMILES Code : O=C(OC(C)(C)C)C(C(OC(C)(C)C)=O)=O
English Name :Di-tert-butyl 2-oxomalonate
MDL No. :N/A

Safety of [ 142842-93-1 ]

Application In Synthesis of [ 142842-93-1 ]

* 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 [ 142842-93-1 ]

[ 142842-93-1 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 81025-83-4 ]
  • [ 142842-93-1 ]
  • [ 900802-76-8 ]
YieldReaction ConditionsOperation in experiment
With dmap In <i>tert</i>-butyl alcohol at 20℃; for 1h; a Building block A5: (R)-N-Allyl-2-methyl-succinamic acida) (R)-2-Methyl-succinic acid 1 -tert-butylester 4-methyl esterTo a solution of 1.46 g (10 mmol) of (R)-2-methyl-succinic acid 4-methyl ester and 4.5 g (20 mmol) of (BOC)2O in 20 ml of tBuOH are added 367 mg (3 mmol) of DMAP. The mixture is stirred for 1 h at rt, the solvent is removed under reduced pressure, and the residue is taken up in 50 ml of DCM. The mixture is extracted with 0.5 M HCI (3 x 30 ml), dried over sodium sulfate and concentrated to give the product in the form of a colorless oil. MS (ES+): 203.2 = [M+H]+.1H-NMR (400 MHz, CDCI3): 3.70 (s, 3H), 2.87-2.78 (m, 1H), 2.69 (dd, 1 H), 2.37 (dd, 1H), 1.46 (s, 9H), 1.20 (d, 3H).
  • 2
  • [ 36283-44-0 ]
  • [ 142842-93-1 ]
  • [ 1094215-13-0 ]
YieldReaction ConditionsOperation in experiment
23% With dmap In dichloromethane at 0 - 20℃; 8 (Boc)2O (2.18 g) and DMAP (100 mg) were added to a solution of the acetamide Compound 8a in CH2Cl2 (16 mL) at 0° C. under a N2 atmosphere. The mixture was stirred overnight while warming to r.t., then the reaction was quenched with a saturated solution of NaHCO3 (10 mL). The organic layer was diluted with CH2Cl2 (50 mL) and washed with water and brine, separated and dried with anhydrous Na2SO4, then filtered and concentrated in vacuo to yield a crude product, which was purified by flash chromatography (eluted with 20% EtOAc in hexane) to afford acetyl-(1S)-1-phenyl-ethyl-carbamic acid tert-butyl ester Compound 8b (0.6 g, 23%) as an oil.
  • 3
  • [ 142842-93-1 ]
  • [ 316124-45-5 ]
  • [ 2137856-90-5 ]
YieldReaction ConditionsOperation in experiment
2.23 g In toluene at 0 - 20℃; for 16h;
  • 4
  • [ 7691-76-1 ]
  • [ 142842-93-1 ]
  • [ 2137856-92-7 ]
YieldReaction ConditionsOperation in experiment
342.4 mg In toluene at 0 - 20℃; for 16h;
 

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