I-2-Bromo-5-nitropyridine CAS 4487-59-6

I-Believe Chemical yi-China ehamba phambili ye-2-Bromo-5-nitropyridine CAS 4487-59-6 umenzi, umthengisi kunye nomthengisi. Ukubambelela ekufuneni umgangatho ogqibeleleyo weemveliso, ukwenzela ukuba i-2-Bromo-5-nitropyridine CAS 4487-59-6 iye yaneliswa ngabathengi abaninzi. Shandong Kholwa

Silungile kwiingenelo zeemveliso zemichiza kwintsimi. Iimveliso zethu zithunyelwa eYurophu, eUnited States, Japan, South Korea, Southeast Asia nakwamanye amazwe kunye nemimandla. Ngenzululwazi kunye netekhnoloji njengesikhokelo, ukunyaniseka njengesiseko, umgangatho njengobomi, kunye nokuthembela kwingqikelelo yeshishini lokusungula izinto ezintsha kunye nophuhliso, sinethemba elinyanisekileyo lokuseka utshintshiselwano kunye nentsebenziswano ebanzi kunye nabathengi basekhaya nabangaphandle ukudala impumelelo!

I-2-Bromo-5-nitropyridine CAS 4487-59-6 Inkcazo yeMichiza

I-2-Bromo-5-nitropyridine CAS 4487-59-6 Iipropati zeMichiza

Indawo yokunyibilika 139-141°C (lit.)
Indawo yokubilisa 145-147°C/10mmHg(lit.)
Ubuninzi be-1.8727(ingqikelelo)
Isalathiso se-refractive 1.6200 (uqikelelo)
Indawo yokudanyaza 145-147°C/10mm
Iimeko zogcino Iinertatmosphere, 2-8°C
Ukunyibilika kweChloroform, iHotMethanol
MorphologyCrystallinePowder
I-Acidity coefficient (pKa)-3.24±0.10(Kuqikelelwe)
UmbalaUkhanyayoUmthubi

I-2-Bromo-5-nitropyridine CAS 4487-59-6 Isicelo

Umxube we-1.53 ​​g (10.94 mmol) we-2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) ye-tetrabutylammonium bromide kunye ne-3.71 g (26.1 mmol) ye-P2O5 kwi-29 ml ye-benzene ishushu kwi-reflux Gxuma ngeyure eli-1. Lo mxube wapholiswa kwiqondo lobushushu begumbi, umaleko ongaphezulu wahlulwe ngokucocwa, kwaye umaleko ongezantsi waxutywa nge-benzene (3 x 6 ml). Izicatshulwa zidibene nesigaba sezinto eziphilayo, zihlanjwe ngesisombululo esigcweleyo se-NaHCO3 kunye ne-NaCl, kwaye yomiswa phezu kwe-MgSO4. I-solvent yachithwa phantsi koxinzelelo oluncitshisiweyo, kwaye intsalela yaphinda yahluzwa kwi-ether ye-petroleum. Isivuno 1.7g (48%). Mp138-139°C, (bp40-70°C).