5-Bromo-2-fluoro-4-methyl-pyridine（CAS# 864830-16-0)
| Nā Code Risk | R22 – Poino ke aleia R37/38 – Hoʻonanea i ka ʻōnaehana hanu a me ka ʻili. R41 – Ka pilikia o ka poino nui i na maka |
| Ka wehewehe palekana | S26 – Inā pili me nā maka, e holoi koke me ka wai nui a e ʻimi i ka ʻōlelo aʻo kino. S39 - Hoʻohana i ka pale maka / maka. |
| Papa Hazard | HOOLAHA |
Hoʻolauna
He mea hoʻohuihui ia me ka molecular formula C≡H∞BrFN, nona ka fluorine atom, ka hui methyl a me ka bromine atom i pani ʻia ma ke apo pyridine.
ʻAno:
he paʻa, ʻona a hoʻonāukiuki. Hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe kūlohelohe e like me ka ethanol a me ka dimethylformamide ma ka lumi wela, a hiki ke hoʻopaʻa hydrogen me kekahi mau mea hoʻopaʻa hydrogen (e laʻa, nā ʻona).
E hoʻohana:
Hoʻohana pinepine ʻia ʻo ia ma ke ʻano he mea hoʻomaka a i ʻole waena i nā hopena synthesis organik. Hiki ke hoʻohana ʻia i ka hoʻomākaukau ʻana i nā lāʻau lapaʻau, nā pesticides a me nā pūhui organik ʻē aʻe. ʻO kāna ʻano nui o nā noi e pili ana i ka noiʻi lāʻau lapaʻau, synthesis kemika a me ka ʻepekema waiwai.
Kaʻina hoʻomākaukau:
Hiki ke hoʻokō ʻia ke ʻano hoʻomākaukau o ka fluorination e ka benzyl bromination a me ka fluorination. ʻO ka mua, hoʻopili ʻia kahi pūhui benzyl (4-methylpyridine) me ka benzylidene bromide e hana i kahi pūhui bromobenzyl (2-bromo-4-methylpyridine). Hoʻopili ʻia kēia pūhui me ka waika hydrofluoric e hana i ka huahana fluorinated like (phosphonium).
ʻIke palekana:
he mea ʻawaʻawa, pono e hana i nā hana pale kūpono. Hōʻalo i ka pili ʻana me ka ʻili, nā maka a me ka ʻōpū hanu i ka wā o ka hana. Pono e hoʻohana ʻia ma kahi wahi e hoʻoluʻu maikaʻi ʻia, a e hoʻokomo i nā aniani pale kūpono, nā mīkina lima a me nā maka. E mālama ʻia mai ke ahi a me nā mea hoʻoheheʻe ʻana, a pale aku i ka hopena me nā kemika ʻē aʻe. Inā ʻike ʻia a i ʻole ʻia paha, e ʻimi koke i ka ʻōlelo lapaʻau.
