2-Cyano-4-methylpyridine (CAS# 1620-76-4)
Ewu ati Aabo
| Awọn aami ewu | Xi - Irritant |
| Awọn koodu ewu | R20 / 21/22 - ipalara nipasẹ ifasimu, ni olubasọrọ pẹlu awọ ara ati ti o ba gbe. R41 - Ewu ti pataki ibaje si oju R37 / 38 - Irritating si eto atẹgun ati awọ ara. R22 – Ipalara ti o ba gbe R36 / 37/38 - Irritating si oju, eto atẹgun ati awọ ara. |
| Apejuwe Abo | S22 - Maṣe simi eruku. S36 / 37 - Wọ aṣọ aabo ati awọn ibọwọ to dara. S39 - Wọ oju / aabo oju. S26 - Ni ọran ti olubasọrọ pẹlu awọn oju, fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ki o wa imọran iṣoogun. S36 - Wọ aṣọ aabo to dara. |
| UN ID | 3276 |
| WGK Germany | 3 |
| HS koodu | 29333990 |
| Kíláàsì ewu | 6.1 |
| Iṣakojọpọ Ẹgbẹ | III |
2-Cyano-4-methylpyridine (CAS # 1620-76-4) Alaye
| Ohun elo | 2-cyano-4-methylpyridine jẹ agbedemeji Organic, eyiti o le jẹ akọkọ oxidized lati 4-methylpyridine lati mura 4-Methyl-pyridine-N-oxide, ati lẹhinna rọpo pẹlu ẹgbẹ cyano lati gba. 4-methyl-pyridine-N-oxide le ṣee lo lati ṣeto 4-methyl -2, 6-dicarboxypyridine, 4-methyl -2, 6-dicarboxypyridine jẹ itọsẹ pyridine ti o wulo pupọ ati agbo-ara agbedemeji ti o ṣe pataki, eyiti o jẹ lilo pupọ. ni aaye ti ile elegbogi. |
| igbaradi | 4-methyl-pyridine-N-oxide (0.109g,1mmol), trimethylcyanosilane (0.119g,1.2mmol), H-diethyl phosphite (0.276g,2mmol), erogba tetrachloride (0.308g,2mmol), triethylamine (0.202g, 2mmol) ati acetonitrile 10ml ni a 50mL gilasi ẹnu mẹta, fesi ni iwọn otutu yara fun wakati 6. Lẹhin ti ifasẹyin ti pari, a ti yọ epo kuro labẹ titẹ ti o dinku ati yapa nipasẹ chromatography iwe (epo epo / ethyl acetate, V / V = 4: 1) lati gba apapo ibi-afẹde omi ti ko ni awọ pẹlu 80% ikore. |
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