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Chemical Structure| 7043-10-9 Chemical Structure| 7043-10-9

Structure of 7043-10-9

Chemical Structure| 7043-10-9

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Product Details of [ 7043-10-9 ]

CAS No. :7043-10-9
Formula : C8H10N2O
M.W : 150.18
SMILES Code : OC1=NC(C2CC2)=NC(C)=C1
MDL No. :MFCD11054233

Safety of [ 7043-10-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501

Application In Synthesis of [ 7043-10-9 ]

* 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 [ 7043-10-9 ]

[ 7043-10-9 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 57297-29-7 ]
  • [ 105-45-3 ]
  • [ 7043-10-9 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; sodium methylate; In methanol; water; (a) The 2-cyclopropyl-4-hydroxy-6-methylpyrimidine to be employed as a starting material could be prepared, for example, as follows: STR6 78.3 g (0.65 mol) of cyclopropylamidine hydrochloride and then 76.4 g (0.65 mol) of acetoacetic acid methyl ester were added to a solution of 70 g (1.3 mol) of sodium methylate in 400 ml of methanol at room temperature. The mixture was stirred at room temperature for 18 hours, the solvent was then distilled off in vacuo and the residue was dissolved in 400 ml of water. The solution was adjusted to pH 4 by adding concentrated hydrochloric acid and, after cooling to 5°-10° C., the product which had precipitated was filtered off. 75 g (77percent of theory) of 2-cyclopropyl-4-hydroxy-6-methylpyrimidine were obtained in this manner in the form of a colorless powder with the melting point 187° C. STR7
With sodium methylate; In methanol; at 20℃; for 18h; 2-Cyclopropyl-6-methylpyrimidin-4-ol (B8.1) (0372) A mixture of <strong>[57297-29-7]cyclopropane-carboximidamide hydrochloride</strong> (2.0 g, 16.7 mmol), methyl 3-oxobutanoate (1.9 g, 16.7 mmol) and CH3ONa (1.8 g, 33.4 mmol) in MeOH (200 mL) was stirred at rt for 18 h. Then the mixture was diluted with Sat. Na2SO3 (50 mL), then concentrated under reduced pressure. The residue was dissolved in 50 mL water, adjusted pH to 4. After cooling to 5° C., the solid was collected and dried in vacuum to give the title compound (2.0 g, 98percent) as a yellow solid. The crude product was used in the next step without further purification. LC-MS: [M+H]+=151.2.
With sodium methylate; In methanol; at 20℃; for 18h; A mixture of cyclo propanecarboximidamide hydrochloride (2.0 g, 16.7 mmol), methyl 3-oxobutanoate (1.9 g, 16.7 mmol) and CH3ONa (1 .8 g, 33.4 mmol) in MeOH (200 mL) was stirred at rt for 18 h.Then the mixture was diluted with Sat. Na2503 (50 mL), then concentrated under reduced pressure. The residue was dissolved in 50 mL water, adjusted pH to 4. After cooling to 5°C, the solid was collected and dried in vaccum to give the title compound (2.0 g, 98percent) as a yellow solid. The crude product was used in the next step without further purification. LC-MS: [M+H] = 151.2.
  • 2
  • [ 141-97-9 ]
  • [ 57297-29-7 ]
  • [ 7043-10-9 ]
YieldReaction ConditionsOperation in experiment
70% With potassium carbonate; In water; at 20℃; for 0.25h;Microwave irradiation; General procedure: The corresponding amidine hydrochloride (2.54 mmol) and powdered K2CO3 (5.76 mmol) were dissolved in water (5.0 mL) in a 20-mL vessel. The beta-keto ester (2.31 mmol) was added and the resulting mixture was irradiated for 5?15 min (see Table 2). Upon the end of the reaction (TLC, hexanes/EtOAc, 5:1), the mixture was diluted with sat. aq NH4Cl (5.0 mL) and extracted with CH2Cl2 (3 × 15 mL). The combined organic phases were dried (anhyd Na2SO4) and filtered. The filtrate was rotary evaporated and the obtained crude product was purified by column chromatography [silica gel, hexane/EtOAc mixtures or recrystallized (EtOH)].
 

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