2-Cyano-4-methylpyridine (CAS# 1620-76-4)
Kotsi le Polokeho
| Matšoao a Kotsi | Xi - Ea halefisang |
| Likhoutu tsa Kotsi | R20/21/22 – E kotsi ka ho hema, ho kopana le letlalo le ha e koetsoe. R41 – Kotsi ya tshenyo e kgolo mahlong R37/38 – E tenang tsamaiso ya ho hema le letlalo. R22 – E kotsi ha e kwetswe R36/37/38 – Ho tena mahlo, tsamaiso ya ho hema le letlalo. |
| Tlhaloso ea Tšireletseho | S22 - U se ke ua hema lerole. S36/37 - Apara liaparo tse loketseng tsa tšireletso le liatlana. S39 - Apara ts'ireletso ea mahlo / sefahleho. S26 - Ha u kopana le mahlo, hlatsoa hang-hang ka metsi a mangata 'me u batle keletso ea bongaka. S36 - Apara liaparo tse loketseng tsa tšireletso. |
| Li-ID tsa UN | 3276 |
| WGK Jeremane | 3 |
| Khoutu ea HS | 29333990 |
| Sehlopha sa Likotsi | 6.1 |
| Sehlopha sa ho paka | III |
2-Cyano-4-methylpyridine (CAS# 1620-76-4) Boitsebiso
| Kopo | 2-cyano-4-methylpyridine ke organic intermediate, e ka qalang ho oxidized ho tloha 4-methylpyridine ho lokisetsa 4-Methyl-pyridine-N-oxide, ebe e nkeloa sebaka ke sehlopha sa cyano ho fumana. 4-methyl-pyridine-N-oxide e ka sebelisoa ho lokisa 4-methyl -2, 6-dicarboxypyridine, 4-methyl -2, 6-dicarboxypyridine ke motsoako oa bohlokoa haholo oa pyridine le motsoako oa bohlokoa haholo oa bohareng, o sebelisoang haholo. tšimong ea pharmacy. |
| tokisetso | 4-methyl-pyridine-N-oxide (0.109g,1mmol), trimethylcyanosilane (0.119g,1.2mmol), H-diethyl phosphite (0.276g,2mmol), carbon tetrachloride (0.308g,2mmol), triethylamine (0.202g, 2mmol) le acetonitrile 10mL ka a 50mL botlolo ea melomo e meraro, e arabela mocheso oa kamore bakeng sa 6h. Ka mor'a hore karabelo e phethoe, solvent e tlosoa tlas'a khatello e fokotsehileng 'me e arohanngoa ke kholomo ea chromatography (petroleum ether / ethyl acetate, V / V = 4: 1) ho fumana motsoako oa sepheo sa mokelikeli o se nang 'mala o nang le lihlahisoa tsa 80%. |
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