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

Believe Chemical ke moetsi ea ka sehloohong oa China 2-Bromo-5-nitropyridine CAS 4487-59-6, mofani oa thepa le kantle ho naha. Ho khomarela ho lelekisa boleng bo phethahetseng ba lihlahisoa, e le hore 2-Bromo-5-nitropyridine CAS 4487-59-6 ea rona e khotsofatsoe ke bareki ba bangata. Shandong Dumela

Re hantle melemo ea lihlahisoa tsa lik'hemik'hale tšimong. Lihlahisoa tsa rona li romeloa linaheng tse ling ho ea Europe, United States, Japane, Korea Boroa, Asia Boroa-bochabela le linaheng tse ling le libaka. Ka saense le thekenoloji e le tataiso, botšepehi e le motheo, boleng e le bophelo, 'me ho itšetlehile ka khopolo ea khoebo ea popontshwa le ntshetsopele, re tšepa ka tieo ho theha phapanyetsano le tšebelisano e pharaletseng le bareki ba malapeng le ba tsoang linaheng tse ling ho theha nala!

2-Bromo-5-nitropyridine CAS 4487-59-6 Tlhaloso ea Lik'hemik'hale

2-Bromo-5-nitropyridine CAS 4487-59-6 Lisebelisoa tsa Lik'hemik'hale

Sebaka se qhibilihang ke 139-141°C (lit.)
Sebaka se belang 145-147°C/10mmHg(lit.)
Density 1.8727(karolelano)
Refractive index 1.6200 (khakanyo)
Sebaka sa Flash 145-147°C/10mm
Maemo a polokelo A sepakapaka, 2-8°C
Solubility Chloroform, HotMethanol
MorphologyCrystallinePowder
Acidity coefficient (pKa) -3.24±0.10(E boletsoeng esale pele)
MmalaLightyellowtolightbrown

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

Motsoako oa 1.53 g (10.94 mmol) oa 2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) ea tetrabutylammonium bromide le 3.71 g (26.1 mmol) ea P2O5 ho 29 ml ea benzene e ile ea futhumatsoa ha reflux Khothatsa ka hora e le 'ngoe. Motsoako ona o ne o pholile ho fihlela mocheso oa kamore, karolo e ka holimo e arotsoe ka ho qhibiliha, 'me karolo e ka tlaase e tšeloa ka benzene (3 x 6 ml). Li-extracts li ne li kopantsoe le karolo ea manyolo, li hlatsuoa ka tharollo e tletseng ea NaHCO3 le NaCl, 'me li omisitsoe holim'a MgSO4. Sehlapi se ile sa hlakoloa ka tlas'a khatello e fokotsehileng, 'me masalla a ile a tsosolosoa ho tloha petroleum ether. Hlahisa 1.7g (48%). Mp138-139°C, (bp40-70°C).