2,4-Dibromothiazole Chemical Properties

Melting point:

80-84 °C

Boiling point:

242.8±13.0 °C(Predicted)

Density 

2.324±0.06 g/cm3(Predicted)

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

solubility 

soluble in Methanol

form 

powder to crystal

pka

-1.93±0.10(Predicted)

color 

White to Light yellow

InChI

InChI=1S/C3HBr2NS/c4-2-1-7-3(5)6-2/h1H

InChIKey

MKEJZKKVVUZXIS-UHFFFAOYSA-N

SMILES

S1C=C(Br)N=C1Br

CAS DataBase Reference

4175-77-3(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xn,Xi

Risk Statements 

22-37/38-41-36/37/38

Safety Statements 

26-39-36-37/39

WGK Germany 

3

Hazard Note 

Harmful

HazardClass 

IRRITANT, KEEP COLD

HS Code 

29349990

2,4-Dibromothiazole Usage And Synthesis

Chemical Properties

Off-white crystalline powder

Uses

2,4-Dibromothiazole is an intermediate used in the preparation of various 2,4-disubstituted thiazole derivatives with biologically active properties such as survival motor neuron (SMN) protein modula tors.

Uses

2,4-Dibromothiazole is applied as a building block in a synthesis of Melithiazole C employing a highly (E)-selective cross-metathesis between the derived 4-vinylthiazole and a dienote side-chain. It is also used as an intermediate in the preparation of various 2,4-disubstituted thiazole derivatives with biologically active properties such as survival motor neuron (SMN) protein modulators.

Uses

Building block in a synthesis of Melithiazole C employing a highly (E)-selective cross-metathesis between the derived 4-vinylthiazole and a dienote side-chain.

Synthesis

General procedure for the synthesis of 2,4-dibromothiazoles from 2,4-thiazolidinediones: Example 41: Preparation of 2-amino-3-methyl-5-(3-pyrimidin-5-ylphenyl)-5-(1,3-thiazol-4-yl)-3,5-dihydro-4H-imidazol-4-one Step a) Preparation of compound 2 A mixture of 2,4-thiazolidinedione 1 (2.28 g, 19.5 mmol) with phosphorus tribromide (25.0 g, 87.0 mmol) was heated at 130°C for 30 min and subsequently cooled to room temperature. The reaction mixture was diluted with ice water (300 mL) and neutralized by batchwise addition of solid sodium carbonate. After neutralization was complete, the mixture was extracted with dichloromethane (3 x 150 mL). The organic layers were combined, dried over anhydrous sodium sulfate, filtered and concentrated. The residue was purified by fast column chromatography (silica gel, elution gradient: 0:100 to 5:95 ethyl acetate/hexane) to afford compound 2 (3.34 g, 71%) as light yellow crystals.1H NMR (500 MHz, CDCl3) δ 7.21 (s, 1H).

References

[1] Journal of Organic Chemistry, 2006, vol. 71, # 10, p. 3754 - 3761
[2] Synthesis, 2012, vol. 44, # 7, p. 1026 - 1029
[3] Journal of Materials Chemistry C, 2017, vol. 5, # 45, p. 11927 - 11936
[4] Patent: US2007/4786, 2007, A1. Location in patent: Page/Page column 21
[5] Tetrahedron, 2006, vol. 62, # 38, p. 9017 - 9037

2,4-Dibromothiazole(4175-77-3)Related Product Information

• Sulfathiazole
• 1,2-Dibromopropane
• 2-Mercaptobenzothiazole
• Benzothiazole
• Fosthiazate
• 1,3-Dibromo-5,5-dimethylhydantoin
• Methylchloroisothiazolinone/methylisothiazolinone mixture (MCIT/MIT)
• 2,4-Dibromothiazole-5-methanol
• 5-Thiazolecarboxylic acid, 2,4-dibromo-
• 2,5-DIBROMOTHIAZOLE
• 2,4-DIBROMO-THIAZOLE-5-CARBALDEHYDE,97%
• 4-Bromothiazole
• 2-Bromothiazole
• Bromine
• 2,5-DIBROMOTHIAZOLE-4-CARBOXYLIC ACID METHYL ESTER
• 2,4-Dibromothiazole