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CAS No. : | 483324-01-2 | MDL No. : | MFCD09743494 |
Formula : | C9H6ClN3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | MGQROXOMFRGAOY-UHFFFAOYSA-N |
M.W : | 191.62 | Pubchem ID : | 11805543 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | Preparation of 2-chloro-4-pyridin-3-yl-pyrimidine lll-a To a solution of n-butyllithium (2.5 molar in hexane, 13.5 mL, 34 mmol) in anhydrous diethylether (50 mL) under argon at -78 ' was added 3-bromo pyridine (3 mL, 31 mmol). The mixture was stirred for 1 h, then a suspension of 2-chloro pyrimidine (3.6 g, 31 mmol) in anhydrous diethylether (30 mL) was added portionwise over 10 min. The resulting mixture was stirred at -30 C for 30 min, and then allowed to warm to 0 C for 1 h, at which point the reaction was successively quenched by addition of water (1 mL) in THF (10 mL) and DDQ (7.6 g, 34 mmol) in THF (25 mL). The resulting brown suspension was stirred at room temperature for 15 min, then cooled to 0 ', and treated with hexane (25 mL) and aqueous NaOH (3N, 25 mL). The mixture was stirred at 0 ' for 5 min, diluted with water (100 mL) and then extracted with ethyl acetate. The combined organic layers were washed with water, dried on MgS04, and concentrated to a minimum volume to afford after filtration lll-a as a pale brown solid (3.14 g, 53 %). H NMR (400 MHz, DMSO- de) delta 9.35 (dd, J = 2.3, 0.8 Hz, 1 H), 8.90 (d, J = 5.3 Hz, 1 H), 8.79 (dd, J = 4.8, 1 .6 Hz, 1 H), 8.54 (ddd, J = 8.0, 2.3, 1 .7 Hz, 1 H), 8.26 (d, J = 5.3 Hz, 1 H), 7.62 (ddd, J = 8.0, 4.8, 0.8 Hz, 1 H). |
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