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Chemical Structure| 89978-00-7 Chemical Structure| 89978-00-7

Structure of 89978-00-7

Chemical Structure| 89978-00-7

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Product Details of [ 89978-00-7 ]

CAS No. :89978-00-7
Formula : C8H6N6
M.W : 186.17
SMILES Code : N#CC1=C(N)N(C2=NC=CC=N2)N=C1
MDL No. :MFCD09056386

Safety of [ 89978-00-7 ]

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

Application In Synthesis of [ 89978-00-7 ]

* 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 [ 89978-00-7 ]

[ 89978-00-7 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 7504-94-1 ]
  • [ 123-06-8 ]
  • [ 89978-00-7 ]
YieldReaction ConditionsOperation in experiment
84% In ethanol; at 20℃; for 12h; Example 48 Step A: Ethoxylidenemalononitrile (3.2 g, 26.2 mmol) was added in portions over a period of 10 min. to a suspension of 2-hydrazinopyrimidine (2.87 g, 26 mmol) in absolute ethanol (13 mL). The mixture was stirred at rt overnight. The precipitated solid was filtered, washed with hexanes and dried in vacuo to obtain the title compound 48A (4.06 g, 84% yield).
In ethanol; at 20℃; for 3h;Reflux; (2) Synthesis of compound C: To a suspension of 15.0 g of Compound (B) separately obtained according to the procedure of Section (1) and 90 mL of ethanol was gradually added 17.5 g of ethoxymethylene malononitrile (manufactured by ALDRICH) at room temperature, and the internal temperature was elevated to 60C, followed by reflux for 3.0 hours. Then, the reaction liquid was cooled to room temperature and filtered. Subsequently, the reaction liquid was washed with 40 mL of ethanol, and the resulting crystals were dried at 60C for 3 hours to obtain 21.9 g of Compound (C). (1H-NMR(DMSO-d6), delta value TMS standard: 7.47 to 7.55(1H, t), 7.95 to 7.98(1H, s), 8.03 to 8.13(2H, brs), 8.85 to 8.92(2H, d))
  • 2
  • [ 1004-38-2 ]
  • [ 89978-00-7 ]
  • [ 1187086-23-2 ]
YieldReaction ConditionsOperation in experiment
69.2% [Synthesis Example 4;] Synthesis of specific illustrative compound D-7; Specific illustrative compound D-7 is synthesized according to the following route. [Show Image] Synthesis of D-7; 1.5 g of compound (1) is added to 15 ml of phosphoric acid, and the mixture is heated to 30C to dissolve. This solution is cooled with ice and, while keeping the temperature of the solution at -5 to 0C, 0.60 g of sodium nitrite is added thereto, followed by stirring for 1 hour to obtain a diazonium salt solution. To this diazonium salt solution is added 1.1 g of compound (11). At the time of completion of the addition, the ice bath is removed, followed by stirring the mixture for 2 hours. The reaction solution is cooled to 10C or lower, and 80 ml of methanol is added thereto, followed by stirring for 30 minutes. Crystals precipitated are collected by filtration, and spray-washed with water. 150 ml of water and 15 ml of DMAc are added to the thus-obtained crystals without drying the crystals, and 6 g of sodium hydrogencarbonate is added thereto at 25C under stirring, followed by stirring at 25C for 1 hour. Crystals precipitated are collected by filtration, and added to 100 ml of methanol without drying the crystals. Further, 20 ml of water is added thereto, and the mixture is stirred for 1 hour under heating. Thereafter, the mixture is stirred under cooling in air, and crystals precipitated are collected by filtration and spray-washed with 20 ml of cold methanol. The thus-obtained crystals are dried to obtain 1.8 g of compound D-7 of the invention. Yield: 69.2%. Infrared absorption chart of compound D-7 is shown in Fig. 4.
 

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