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CAS No. : | 580-15-4 | MDL No. : | MFCD00006803 |
Formula : | C9H8N2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | N/A |
M.W : | 144.17 g/mol | Pubchem ID : | 11373 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313 | UN#: | N/A |
Hazard Statements: | H315-H319 | Packing Group: | N/A |
GHS Pictogram: |
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Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79% | Stage #1: With trifluorormethanesulfonic acid; sodium nitrite In hexane; dimethyl sulfoxide at 5 - 20℃; for 1 h; Stage #2: With potassium iodide In hexane; water; dimethyl sulfoxide at 20℃; for 0.166667 h; |
General procedure: To a solution of hexane (5 mL), DMSO (0.5 mL), and trifluoromethanesulfonicacid (0.54 mL, 6 mmol) at 5 °C were sequentially added thequinoline amine 4b or 4c (2 mmol) and NaNO2 (350 mg, 5 mmol) understirring, and the mixture was stirred for 10 min. The resultingmixture was then stirred for 50 min at r.t. until the starting aminehad been consumed as monitored by TLC. An emission of N2 bubbleswas not observed and the reaction solution gave the positive probeon diazonium salts with β-naphthol. Next, KI (2.4 mmol) in H2O (0.5mL) was added and the mixture was stirred 10 min at r.t. until evolutionof N2 bubbles ceased. In the case of 4b, the solid 3-iodoquinoline6 obtained was filtered, washed with H2O, and dried. In the case of 3c,the reaction mixture was poured into H2O and the oily product 7 was extracted with EtOAc (2 × 25 mL). The combined organic extractswere dried (Na2SO4), filtered, and the solvent was removed under reducedpressure on a rotary evaporator. The product 7 was purified bysilica gel flash chromatography (eluent: CH2Cl2). |
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