5-Bromo-2-fluoro-4-methyl-pyridine (CAS# 864830-16-0)
| Zizindikiro Zowopsa | R22 - Zowopsa ngati zitamezedwa R37/38 - Zokwiyitsa dongosolo la kupuma ndi khungu. R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso |
| Kufotokozera Zachitetezo | S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala. S39 - Valani chitetezo chamaso / kumaso. |
| Kalasi Yowopsa | ZOKWIYA |
Mawu Oyamba
Ndi organic pawiri ndi formula molecular C≡H∞BrFN, yomwe ili ndi atomu ya fluorine, gulu la methyl ndi atomu ya bromine m'malo mwa mphete ya pyridine.
Chilengedwe:
ndi olimba, poizoni ndi zokwiyitsa. Amasungunuka mu zosungunulira za organic monga Mowa ndi dimethylformamide pa kutentha kwa firiji, ndipo amatha kulumikizana ndi haidrojeni ndi ma hydrogen bond ovomereza (mwachitsanzo, ma alcohols).
Gwiritsani ntchito:
Nthawi zambiri amagwiritsidwa ntchito ngati zoyambira kapena zapakatikati pazochita za organic synthesis. Angagwiritsidwe ntchito pokonza mankhwala, mankhwala ndi zina organic mankhwala. Ntchito zake zambiri zikuphatikiza kafukufuku wamankhwala, kaphatikizidwe ka mankhwala ndi sayansi yazinthu.
Njira Yokonzekera:
Kukonzekera njira fluorination chingapezeke ndi benzyl bromination ndi fluorination. Choyamba, mankhwala a benzyl (4-methylpyridine) amachitidwa ndi benzylidene bromide kuti apange mankhwala a bromobenzyl (2-bromo-4-methylpyridine). Pawiriyi imayendetsedwa ndi hydrofluoric acid kuti ipange chinthu chofananira cha fluorinated (phosphonium).
Zambiri Zachitetezo:
ndi poizoni, ayenera kutenga njira zodzitetezera. Pewani kukhudzana ndi khungu, maso ndi kupuma thirakiti pa ntchito. Ayenera kugwiritsidwa ntchito pamalo olowera mpweya wabwino, ndi kuvala magalasi odzitetezera oyenera, magolovesi ndi masks. Sungani kutali ndi moto ndi okosijeni, ndipo pewani kukhudzana ndi mankhwala ena. Ngati zavumbulutsidwa kapena kukomoka, pitani kuchipatala mwachangu.
