Product
Supplier
Encyclopedia
Inquiry
Home > Encyclopedia > 2-Bromo-3-methyl-5-nitropyridine

2-Bromo-3-methyl-5-nitropyridine

2-Bromo-3-methyl-5-nitropyridine structure

2-Bromo-3-methyl-5-nitropyridine 

structure
  • CAS No:

    23132-21-0

  • Formula:

    C6H5BrN2O2

  • Chemical Name:

    2-Bromo-3-methyl-5-nitropyridine

  • Synonyms:

    2-BROMO-5-NITRO-3-PICOLINE;2-BROMO-3-METHYL-5-NITROPYRIDINE;2-Hydorxy-5-Nitro-3-Picoline;2-HYDROXY-5-NITRO-3-PICOLINE (2-HYDROXY-3-METHYL-5-NITROPYRIDINE);6-Bromo-5-methyl-3-nitropyridine

  • Categories:

    Pharmaceutical Intermediates  >  Bulk Drug Intermediates

Description

off-white solid

2-Bromo-3-methyl-5-nitropyridine Basic Attributes

217.02

215.953430

1565441

-0

DTXSID10409464

2933399090

Characteristics

58.7

2.1

1.7±0.1 g/cm3

57-58°C

305.1°C at 760 mmHg

138.3±26.5 °C

1.600

Safety Information

IRRITANT

36/37/38-21/22

26-36-36/37

Xi

P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501

H302

|Warning|H302 (83.33%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 6 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

2-Bromo-3-methyl-5-nitropyridine Use and Manufacturing

Synthesis of common intermediates from Scheme 4Step 1 : Synthesis of 2-bromo-3-(bromomethyl)-5-nitropyridine (Scheme 4, compound 27)A sample of 3-methyl-5-nitropyridin-2-ol (1.44 g, 9.34 mmol) was placed in 35 mL pressure vessel and dissolved in a mixture of toluene/DMF (10: 1 ratio; 15 mL). The vessel was capped with a septum, flushed with Argon and phosphorous tribromide (1.32 ml ., 14.0mmol) was added by syringe. The septum cap was replaced by a Teflon cap and the mixture was stirred for 20 min at 120 °C. The mixture was cooled to room temperature, neutralized with a 3M NaOH solution and extracted with toluene (3x). The combined organic phases were dried over anhydrous MgS0 and concentrated under vacuum to give 2.00 g of the desired 2-bromo-3-methyl-5- nitropyridine product as an orange solid (99percent).(1) and at -78 for 1-Boc-4- piperidine aldehyde (1.87g) solution of tetrahydrofuran (18) was added dropwise a tetrahydrofuran solution (9.6) of 1.06M methyl magnesium bromide, It was stirred at room temperature for 0.5 hour. After the reaction terminated, it cooled to room temperature, and the addition of saturated aqueous ammonium chloride solution, followed by extracting with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, the solvent was removed by distillation. Of the resulting residue at room temperature in ethyl acetate (18) was added a 4N hydrochloric acid / ethyl acetate solution (18), and stirred for 4 hours at the same temperature. After the reaction, hydrochloric acid was distilled off and the excess solvent. In addition, the obtained residue was purified by N, N- dimethylformamide (9.0) at room temperature was added (1) (1)

Computed Properties

Molecular Weight:217.02
XLogP3:2.1
Hydrogen Bond Acceptor Count:3
Exact Mass:215.95344
Monoisotopic Mass:215.95344
Topological Polar Surface Area:58.7
Heavy Atom Count:11
Complexity:159
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Recommended Suppliers of 2-Bromo-3-methyl-5-nitropyridine

Scan the QR Code to Share

Feedback & Suggestions
Send Message

Thank you for your feedback. If you require further assistance, please contact us by email at info@echemi.com or call us at +86-532-55729510.