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Xov xwm kev lag luam

Taw qhia ntawm 2-Bromofluorobenzene

2022-06-22
2-Bromofluorobenzene yog ib yam ntawm cov organic teeb meem, tshuaj formula yog C6H4BrF, CAS rau npe yog 1072-85-1, mas siv nyob rau hauv kev npaj thiab synthesis ntawm cov tshuaj, tshuaj tua kab, kua siv lead ua khoom intermediates, synthesis ntawm o-fluorobromobenzene pob tshab tsis muaj xim. kua ua tiav los ntawm UIVCHEM technology.


Cov tshuaj tiv thaiv lub raj mis tig mus rau cov neeg nyob sib ze fluoro aniline thiab hydrobromic acid sib tov, tso cua sov tso tawm ntau cov xim liab me me los nag, qhov kub siab tshaj plaws ntawm 60 â, 5 feeb, do cov dej khov ntsev da dej - 10 â, â ¢ hauv qab no, ntxiv sodium nitrite Kev daws cov tee dej thiab cov txheej txheem tso cua sov, cov khoom ua kua maj mam ua cov txiv kab ntxwv qhia meej, ntws tawm li 40 feeb, drip tawm cua sov rau 10 feeb tom qab koom nrog carbamide, txias, Muab cuprous bromide, hydrobromic acid, dej thiab Chemicalbook roj da dej rau hauv cov tshuaj tiv thaiv lub raj mis nrog distillation ntaus ntawv, cua sov txog li 120 ~ 130â ​ ຶ ​ ຶ โ โ โ โ , dej chav dej, qhov kub ntawm sab hauv yog li 105 â º º thaum dej chav dej tawm, pib poob hnyav nitrogen ntsev, lub sij hawm no muaj ntau cov npuas, tswj qhov poob acceleration. kom tswj tau lub xeev distillation, xyuas kom meej tias cov generated o-fluorobromobenzene yog sai npaum li cas los ntawm dej chav. Tom qab li 50 feeb ntawm dripping, chav rau lwm 5 feeb kom tsis txhob distillation. Cais cov roj txheej, ntxuav nrog dej ntsev saturated, lim cov roj txheej ntsuas dej 0.04%, tau 2-Bromofluorobenzene.



Yav dhau los:

2-Carboxybenzaldehyde

Tom ntej no:

Methyl p-toluenesulfonate chemical khoom
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