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

Ko te Believe Chemical te rangatira o Haina 2-Bromo-5-nitropyridine CAS 4487-59-6 kaihanga, kaiwhakarato me te kaweake. Ko te piri ki te whai i te kounga tino pai o nga hua, kia pai ai to maatau 2-Bromo-5-nitropyridine CAS 4487-59-6 e te maha o nga kaihoko. Shandong Whakapono

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

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

Ira whakarewa 139-141°C (marama)
Ira kohua 145-147°C/10mmHg(marama)
Kiato 1.8727(tau tata)
Taupū Refactive 1.6200 (whakatau tata)
Ira hiko 145-147°C/10mm
Nga tikanga rokiroki Inertatmosphere, 2-8°C
Waiwai Waiwai, Weawera
MorphologyCrystallinePowder
Te whakarea kawa (pKa) -3.24±0.10(Whakaahua)
TaeKamaama ki te parauri

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

He ranunga o te 1.53 g (10.94 mmol) o 2-hydroxy-5-nitropyridine, 4.1 g (12.71 mmol) o te tetrabutylammonium bromide me te 3.71 g (26.1 mmol) o P2O5 i roto i te 29 ml o te benzene i whakamahana i te reflux Whakaoho mo te 1 haora. I whakamataohia te ranunga ki te pāmahana rūma, ka wehea te paparanga o runga ma te whakaheke, a ko te paparanga o raro ka triturated ki te benzene (3 x 6 ml). I honoa nga tangohanga ki te wahanga waro, ka horoia ki te wairewa kukū o NaHCO3 me te NaCl, ka whakamaroke ki runga MgSO4. I whakakorehia te whakarewa i raro i te iti o te pehanga, a ko te toenga i whakakikoruatia mai i te hinu ether. Hua 1.7g (48%). Mp138-139°C, (bp40-70°C).