5-Bromo-2-fluoro-4-methyl-pyridine (CAS# 864830-16-0)
| Iikhowudi zoMngcipheko | I-R22 – Iyingozi xa iginyiwe I-R37/38 – Iyacaphukisa inkqubo yokuphefumla kunye nolusu. I-R41 – Umngcipheko womonakalo omkhulu emehlweni |
| Inkcazelo yoKhuseleko | S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S39 –Nxiba ukhuseleko lwamehlo / ubuso. |
| IKlasi yeeNgozi | OKUTHUMEKAYO |
Intshayelelo
I-organic compound kunye ne-molecular formula C≡H∞BrFN, ene-athomu ye-fluorine, iqela le-methyl kunye ne-athomu ye-bromine efakwe endaweni ye-pyridine ring.
Indalo:
iqinile, inetyhefu kwaye iyacaphukisa. Iyanyibilika kwizinyibilikisi ze-organic ezifana ne-ethanol kunye ne-dimethylformamide kwiqondo lobushushu begumbi, kwaye inokuba nebhondi ye-hydrogen kunye nabamkeli be-hydrogen bond (umzekelo, ii-alcohols).
Sebenzisa:
Ihlala isetyenziswa njengento yokuqala okanye ephakathi kwi-organic synthesis reactions. Ingasetyenziswa ekulungiseleleni amayeza, i-pesticides kunye nezinye izinto eziphilayo. Uluhlu olubanzi lwezicelo lubandakanya uphando lwamayeza, ukuhlanganiswa kweekhemikhali kunye nesayensi yezixhobo.
Indlela yokulungiselela:
Indlela yokulungiselela i-fluorination inokufezekiswa nge-benzyl bromination kunye ne-fluorination. Okokuqala, i-benzyl compound (4-methylpyridine) iphendulwa kunye ne-benzylidene bromide ukuvelisa i-bromobenzyl compound (2-bromo-4-methylpyridine). Le khompawundi ke isabela kunye hydrofluoric acid ukuvelisa imveliso fluorinated ehambelanayo (phosphonium).
Ulwazi ngoKhuseleko:
inetyhefu, kufuneka ithathe amanyathelo afanelekileyo okukhusela. Gwema ukudibana nolusu, amehlo kunye nomgudu wokuphefumula ngexesha lokusebenza. Kufuneka isetyenziswe kwindawo engena umoya, kwaye unxibe iiglasi ezifanelekileyo zokukhusela, iiglavu kunye nemaski. Gcina kude nomlilo kunye ne-oxidizing agents, kwaye ugweme ukusabela ngezinye iikhemikhali. Ukuba utyhilekile okanye uphefumlelwe, funa iingcebiso zonyango ngokukhawuleza.
