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Chemical Structure| 69687-80-5 Chemical Structure| 69687-80-5

Structure of 69687-80-5

Chemical Structure| 69687-80-5

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Product Details of [ 69687-80-5 ]

CAS No. :69687-80-5
Formula : C8H11NO2
M.W : 153.18
SMILES Code : COC(=O)C1=C(C)NC(C)=C1
MDL No. :MFCD00203859

Safety of [ 69687-80-5 ]

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

Application In Synthesis of [ 69687-80-5 ]

* 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 [ 69687-80-5 ]

[ 69687-80-5 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 69687-80-5 ]
  • [ 120935-94-6 ]
YieldReaction ConditionsOperation in experiment
92% With pyridinium hydrobromide perbromide; triethylamine; In dichloromethane; at 0℃; for 2h; To a mixture of methyl 2,5-dimethyl-1H-pyrrole-3-carboxylate 21 (6.85 g, 45.0 mmol), triethylamine (8.7 mL, 63.0 mmol) and CH2Cl2 (270 mL) was added pyridinium bromide perbromide (15.7 g, 15.7 mmol) portionwise at 0 C. After stirring at 0 C for 2 h, the mixture was poured into brine and extracted with EtOAc. The organic layer was dried over anhydrous MgSO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography (hexane-EtOAc). The product was recrystallized from hexane-EtOAc to give 22 (7.59 g, 92%) as yellow crystals. 1H NMR (300 MHz, CDCl3) delta: 2.19 (3H, s), 2.47 (3H, s), 3.82 (3H, s), 8.20 (1H, s).
With pyridine perbromohydrobromide; triethylamine; In dichloromethane; at 0℃; for 2h; 4-bromo-2,5-dimethyl-1H-pyrrole-3-carboxylate To a solution of methyl 2,5-dimethyl-1H-pyrrole-3-carboxylate (6.85 g) and triethylamine (8.7 ml) in dichloromethane (270 ml) was added pyridine perbromohydrobromide (15.7 g) little by little at 0 C. The reaction mixture was stirred at the same temperature for 2 hours and poured into saturated sodium chloride solution.. The reaction mixture was extracted with ethyl acetate, and the ethyl acetate layer was dried over magnesium sulfate and concentrated.. The residue was purified by column chromatography (carrier: silicagel, eluant: hexane-ethyl acetate) and recrystallized from ethyl acetate-hexane to obtain the titled compound (7.59 g) as yellow crystals.1H-NMR (CDCl3) delta 2.19 (3H, s), 2.47 (3H, s), 3.82 (3H, s), 8.20 (1H, s).
  • 2
  • [ 69687-80-5 ]
  • [ 39416-48-3 ]
  • [ 120935-94-6 ]
YieldReaction ConditionsOperation in experiment
In chloroform; a) Methyl 4-Bromo-2,5-dimethyl-1H-pyrrole-3-carboxylate A stirred solution of methyl 2,5-dimethyl-1H-pyrrole -3-carboxylate (1.5g, 9.8mmol) in chloroform (60ml) and triethylamine (2.5ml) cooled to 0C was treated portionwise with pyridinium perbromide (3.5g, 10.94 mmol). The mixture was allowed to warm to room temperature and then silica (6g) was added in one portion and the entire mixture evaporated to dryness under reduced pressure (14 mm Hg) with gentle heating (below 50). Chromatography on silica eluding with ethyl acetate-hexane mixtures gave the sub-title compound (1.9g), M+231/233.
 

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