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

I-Believe Chemical ingumkhiqizi ohamba phambili wase-China 2-Bromo-5-nitropyridine CAS 4487-59-6, umphakeli kanye nomkhiqizi. Ukunamathela ekuphishekeleni ikhwalithi ephelele yemikhiqizo, ukuze i-2-Bromo-5-nitropyridine CAS 4487-59-6 yethu yaneliswe amakhasimende amaningi. Shandong Kholwa

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

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

Iphoyinti lokuncibilika 139-141°C (lit.)
Iphoyinti lokubilisa 145-147°C/10mmHg(lit.)
Ukuminyana 1.8727(roughestimate)
Inkomba ye-Refractive 1.6200 (isilinganiso)
Iphoyinti le-Flash 145-147°C/10mm
Izimo zesitoreji I-inertatmosphere, 2-8°C
I-Solubility Chloroform, i-HotMethanol
I-MorphologyCrystallinePowder
I-acidity coefficient (pKa)-3.24±0.10(Kubikezelwe)
UmbalaOkhanyayoOphuziokumnyama

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

Ingxube engu-1.53 ​​g (10.94 mmol) ka-2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) we-tetrabutylammonium bromide kanye no-3.71 g (26.1 mmol) we-P2O5 ku-29 ml we-benzene iye yashiswa nge-reflux Govuza ihora elingu-1. Ingxube ipholiswe izinga lokushisa elilingana negumbi, ungqimba olungaphezulu lwahlukaniswa ngokukhishwa, futhi ungqimba olungezansi lwafakwa i-benzene (3 x 6 ml). Okukhishiwe kuhlanganiswe nesigaba se-organic, kugezwe ngesisombululo esigcwele se-NaHCO3 ne-NaCl, futhi somiswa phezu kwe-MgSO4. I-solvent yachithwa ngaphansi kwengcindezi encishisiwe, futhi insalela yaphinde yahlungwa kabusha ku-petroleum ether. Isivuno esingu-1.7g (48%). Mp138-139°C, (bp40-70°C).