ChemicalBook > CAS DataBase List > 3,5-dichloro-2-iodopyrazine

3,5-dichloro-2-iodopyrazine

Product Name: 3,5-dichloro-2-iodopyrazine
CAS No.: 136866-30-3
Chemical Name: 3,5-dichloro-2-iodopyrazine
Synonyms: 3,5-dichloro-2-iodopyrazine
CBNumber: CB92537516
Molecular Formula: C4HCl2IN2
Formula Weight: 274.87
MOL File: 136866-30-3.mol

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3,5-dichloro-2-iodopyrazine Property

Melting point:: 101.3-103.0 °C
Boiling point:: 278.7±35.0 °C(Predicted)
Density: 2?+-.0.06 g/cm3(Predicted)
storage temp.: 2-8°C(protect from light)
pka: -6.27±0.10(Predicted)
Appearance: Off-white to light brown Solid

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Safety

Hazard Codes: T
Risk Statements: 25
Safety Statements: 45
RIDADR: UN2811

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H332Harmful if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P330Rinse mouth.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

TRC

Product number: D475168
Product name: 3,5-dichloro-2-iodopyrazine
Packaging: 500mg
Price: $220
Updated: 2021/12/16

Oakwood

Product number: 092141
Product name: 3,5-Dichloro-2-iodopyrazine
Purity: 95%
Packaging: 100mg
Price: $40
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD140181
Product name: 3,5-Dichloro-2-iodopyrazine
Packaging: 100mg
Price: $59
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FD140181
Product name: 3,5-Dichloro-2-iodopyrazine
Packaging: 250mg
Price: $117.5
Updated: 2021/12/16

AK Scientific

Product number: X9962
Product name: 3,5-Dichloro-2-iodopyrazine
Packaging: 250mg
Price: $131
Updated: 2021/12/16

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3,5-dichloro-2-iodopyrazine Chemical Properties,Usage,Production

Synthesis

4774-14-5

136866-30-3

Synthesis of 3,5-dichloro-2-iodopyrazine (11a): 2,6-dichloropyrazine (9) (149 mg, 1.0 mmol) was dissolved in THF (2 mL) at 25 °C, then TMPZnCl-LiCl (1.3 M in THF, 0.85 mL, 1.1 mmol) was added. The reaction mixture was stirred at this temperature for 30 min. Subsequently, iodine (I2, 381 mg, 1.5 mmol) was dissolved in anhydrous THF (2 mL) and slowly added dropwise to the reaction system and stirring was continued for 0.5 hr. Upon completion of the reaction, the reaction was quenched with saturated aqueous NaHCO3 (10 mL) and saturated aqueous Na2S2O3 (10 mL) and extracted with ether (3 × 50 mL). The organic phases were combined, dried with anhydrous Na2SO4, filtered and concentrated under reduced pressure. Purification by fast column chromatography (CH2Cl2/n-pentane, 1:2) afforded the target product 11a (251 mg, 90%) as a colorless solid with a melting point: 101.3-103.0 °C. 1H-NMR (300 MHz, CDCl3) δ: 8.30 (s, 1H). 13C-NMR (75 MHz, CDCl3) δ: 153.1, 146.9, 142.9, 142.1. 146.9, 142.4, 115.7. m/z (%) MS (70 eV, EI): 274 (100) [M+], 147 (75), 127 (18), 86 (32), 57 (21), 44 (94). ν/cm-1 IR (ATR): 2969, 2633, 2281, 1784, 1738, 1510, 1491, 1379, 1353. 1491, 1379, 1353, 1323, 1274, 1230, 1217, 1205, 1175, 1162, 1143, 1018, 893, 843, 655, 634, 618, 611, 604. HRMS (EI) calculated value of C4HCl2IN2 (M+): 273.8561, measured value: 273.8555.

References

[1] Organic Letters, 2009, vol. 11, # 8, p. 1837 - 1840
[2] Patent: US2011/288296, 2011, A1. Location in patent: Page/Page column 11
[3] Synthesis (Germany), 2016, vol. 48, # 19, p. 3155 - 3164
[4] Tetrahedron Letters, 2011, vol. 52, # 36, p. 4590 - 4594
[5] Organic Letters, 2013, vol. 15, # 9, p. 2156 - 2159

3,5-dichloro-2-iodopyrazine Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 3,5-dichloro-2-iodopyrazine manufacturers

Career Henan Chemical Co

Product: 3,5-dichloro-2-iodopyrazine 136866-30-3
Price: US $1.00/KG
Min. Order: 1KG
Purity: 95--99%
Supply Ability: 1ton
Release date: 2020-01-08

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3,5-dichloro-2-iodopyrazine

136866-30-3