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CAS No. : | 80947-25-7 | MDL No. : | MFCD08705643 |
Formula : | C9H7ClN2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | QVCRGJALYOLXDC-UHFFFAOYSA-N |
M.W : | 178.62 | Pubchem ID : | 12884651 |
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 |
---|---|---|
44% | With ammonia In water at 160℃; for 2.5 h; microwave irradiation | Preparation of compound 9 is described elsewhere [von Btichi, J. et al. Die Tuberkulostatische Wirkung von 2-Oxy-4-amino-chinolin Derivaten. HeIv. Chim. Acta. 1949, 32, 1806-1814; Wojahn, H. Untersuchungen ber den Zusammenhang von chemischer Konstitution und anasthesierender Wirkung bei 2-Alkoxy-chinolin Deivaten. Arch. Pharm. 1936, 274, 83-106]. However, we prepared compound 9 as described here. In brief, compound 8 (0.35 g, 1.8 mmol) was suspended in ammonia (28-30percent in water, 3 mL). The reaction was carried out in the microwave at 160 0C for 2.5 hours. After the reaction was completed, ammonia was evaporated off. The product was purified by column chromatography, eluent 3percent MeOH in DCM. Yield: 0.14 g (44percent). 1H NMR (CDCl3) δ 4.83 (bs, 2H, NH2), 6.62 (s, IH, Ar), 7.43-7.51 (m, IH, Ar), 7.63-7.73 (m, 2H, Ar), 7.89-7.95 (m, IH, Ar). 13C NMR (600MHz, CDCl3) δ 103.07, 117.60, 120.08, 125.27, 129.13, 130.46, 148.26, 151.40, 151.41. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With sodium dithionite In methanol for 3 h; Reflux | General procedure: The 2-chloro-4-azido quinolines (4mmol) compound 2(a–f) was taken in 20mL methanol and (4mmol) of sodium dithionite was added and refluxed for 3–6h on water bath. After the completion of reaction as it indicated by TLC spot change, the reaction mixture was poured into crushed ice, filtered, dried and chromatographed over silica gel using petroleum ether: ethyl acetate (80:20) (v/v) as eluent which pure light yellow/white colored needles compound 3(a–f). It was recrystallised from absolute methanol. 2.3.1 2-Chloroquinoline-4-amine (3a) Yield: 91percent; white needles; mp 180–183°C. IR (KBr, cm−1): 1643, 2970, 3182, 3312, 3459. 1H NMR (400MHz, DMSO-d6): δ 6.51 (s, 1H, Ar-H), 7.17(s, 2H, NH2), 7.46–7.42 (m, 1H, Ar-H), 7.70–7.63(m, 2H, Ar-H), 8.17 (s, 1H, Ar-H). 13C NMR (100MHz, DMSO-d6): δ 100.50, 117.63, 122.44, 124.29, 127.89, 130.24, 147.99, 150.55, 154.13. ESI–MS (m/z): calcd for [M+H]+ 178.62, found 179.00; Anal. Calcd for C9H7ClN2: C, 60.52; H, 3.95; N, 15.68 Found: C, 60.56; H, 3.89; N, 15.70. |
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