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5-Bromo-3-nitro-2-pyridinamine

5-Bromo-3-nitro-2-pyridinamine structure

CAS No:
6945-68-2
Formula:
C5H4BrN3O2
Chemical Name:
5-Bromo-3-nitro-2-pyridinamine
Synonyms:
2-Pyridinamine,5-bromo-3-nitro-;Pyridine,2-amino-5-bromo-3-nitro-;5-Bromo-3-nitro-2-pyridinamine;2-Amino-5-bromo-3-nitropyridine;5-Bromo-3-nitropyridin-2-ylamine;NSC 52200;5-Bromo-3-nitropyridin-2-amine
Categories:
Pharmaceutical Intermediates > Heterocyclic Compound

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Description

yellow-brown crystalline powder

5-Bromo-3-nitro-2-pyridinamine Basic Attributes

Molecular Weight：

218.01

Exact Mass：

218.01

BRN：

383851

EC Number：

-0

NSC Number：

52200

DSSTox ID：

DTXSID60219611

HScode：

29333999

Characteristics

PSA：

84.7

XLogP3：

1.6

Appearance：

yellow-brown crystalline powder

Density：

1.9±0.1 g/cm3

Melting Point：

205 °C

Boiling Point：

302.9°C at 760 mmHg

Flash Point：

137.0±26.5 °C

Refractive Index：

1.683

Safety Information

Hazard category：

IRRITANT

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/37/38-20/21/22

safety instructions：

26-37/39-36/37/39-22

Marks：

Xi,Xn

Hazard note：

Irritant

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H315-H319-H335

GHS Classification：

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

5-Bromo-3-nitro-2-pyridinamine Use and Manufacturing

General procedure: 2-Aminopyridine 7 (0.020 mol) was added to ice-cold concentrated sulfuric acid and the resulting solution was treated with concentrated nitric acid (1.09 mL, 0.024 mol), which was added slowly so as to maintain the reaction temperature in 0-5 °C range.The resulting solution was stirred at 0-5 °C for 1 h, warmed up to rt and stirred at that temperature overnight. It was then poured over ice and the pH was adjusted to 7-8 with 10percent aq NaOH solution. The resulting precipitate was collected by filtration, washed with water and dried at 60 °C overnight to provide analytically pure 2-amino-3-nitropyridines.Step AAA: 2-Amino-5-bromo-3-nitropyridine General procedure: To a mixture of 2-aminopyridine (0.5 mmol, 1 equiv), p-TSA (0.4 mmol, 0.8 equiv), 1-butylpyridinium bromide (1.5 mmol, 3 equiv) in a 50 mL Schlenk tube were added 1, 2-dimethoxyethane (2 mL) under air. Then H(1) Production of 2, 5-dibromo-3-nitropyridine: Hydrogen bromide (48 % in H2O, 13 mL) was stirred at 0C, to which Synthesis Synthesis of N-ethyl-N-methyl-N'[2, 5-dimethyl-6-(4-t-butylphenyl)pyridin-3- y 1] formamidine (Compound No .11); (1); Bromine (68.81 mmol, 3.5 ml) was gradually added dropwise to an aqueous solution of 48% hydrobromic acid (120 ml) of Example 156 4-[6-(2-naphthyl)-3-piperidin-4-yl-3H-imidazo[4, 5-b]pyridin-2-yl]phenol 2, 5-dibromo-3-nitropyridine. General procedure: 2-Amino-3-nitropyridine 8 (0.015 mol) was dissolved, on cooling with ice, in 70% sulfuric acid and treated with a solution of NaNO2 (1.24 g) in water (8 mL), which was added dropwise so as to maintain the reaction temperature in 0-5 C range. The reaction was allowed to warm up to rt and stirred at that temperature for 3 h. The precipitate formed was isolated by filtration, washed with water and dried at 60 C overnight.

Computed Properties

Molecular Weight:218.01
XLogP3:1.6
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:4
Exact Mass:216.94869
Monoisotopic Mass:216.94869
Topological Polar Surface Area:84.7
Heavy Atom Count:11
Complexity:160
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Sulfuric acid

Nitric acid

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Guide of 5-Bromo-3-nitro-2-pyridinamine

Description
Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Material
Recommended Suppliers
Latest News
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5-Bromo-3-nitro-2-pyridinamine

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