38300-67-3

Basic information

• Product Name: 1,2,4-Tribromobutane
• Synonyms: 1,2,4-TRIBROMOBUTANE;Butane, 1,2,4-tribromo-;butane,1,2,4-tribromo-;1.2.4-TRIBROMOBUTANE,=99%
• CAS NO: 38300-67-3
• Molecular Formula: C₄H₇Br₃
• Molecular Weight: 294.81
• Mol File: 38300-67-3.mol
• Article Data: 5

Chemical Properties

• Melting Point: -18°C
• Boiling Point: 218.12°C (estimate)
• Flash Point: 104.9 °C
• Appearance: /
• Density: 2.2505 (estimate)
• Vapor Pressure: 0.0336mmHg at 25°C
• Refractive Index: 1.5588
• CAS DataBase Reference: 1,2,4-Tribromobutane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,4-Tribromobutane(38300-67-3)
• EPA Substance Registry System: 1,2,4-Tribromobutane(38300-67-3)

Safety Data

• Hazardous Substances Data: 38300-67-3(Hazardous Substances Data)

Usage

General Description

1,2,4-Tribromobutane is a chemical compound with the molecular formula C4H7Br3. It is a colorless liquid with a strong, unpleasant odor which is insoluble in water but soluble in organic solvents. 1,2,4-Tribromobutane is primarily used as a solvent and reagent in organic synthesis and is also used in the production of pharmaceuticals, dyes, and agrochemicals. It is considered to be a hazardous chemical, as exposure to it can cause irritation of the skin, eyes, and respiratory system, and it may be harmful if ingested or inhaled in large quantities. Therefore, proper handling and storage of 1,2,4-Tribromobutane is essential to ensure safety in its use.

InChI:InChI=1/C4H7Br3/c5-2-1-4(7)3-6/h4H,1-3H2

Upstream product

• 5162-44-7 1-bromo-4-butene 
• 87018-30-2 3,4-Dibromobutan-1-ol 
• 7124-16-5 1,2-dibromo-4-methoxy-butane 
• 627-27-0 homoalylic alcohol 
• 6974-12-5 1,4-dibromo-2-butene 
• 10035-10-6 hydrogen bromide 
• 64-19-7 acetic acid 
• 10463-48-6 3,4-dibromo-1-butene 
• 2516-33-8 Cyclopropylmethanol 
• 871899-16-0 (3,4-dibromo-butyl)-phenyl ether 

Downstream Products

• 453-20-3 3-Hydroxytetrahydrofuran 
• 591-80-0 pent-4-enoic acid 
• 55030-57-4 2,4-dibromo-1-butene 
• 102632-99-5 1-phenyl-4-penten-1-ol 
• 108963-20-8 1-benzyl-3-benzylaminopyrrolidine 
• 14835-47-3 1,2,4-trihydroxybutane triacetate 

Relevant articles and documents

Thiourea-Mediated Halogenation of Alcohols

The halogenation of alcohols under mild conditions expedited by the presence of substoichiometric amounts of thiourea additives is presented. The amount of thiourea added dictates the pathway of the reaction, which may diverge from the desired halogenation reaction toward oxidation of the alcohol, in the absence of thiourea, or toward starting material recovery when excess thiourea is used. Both bromination and chlorination were highly efficient for primary, secondary, tertiary, and benzyl alcohols and tolerate a broad range of functional groups. Detailed electron paramagnetic resonance (EPR) studies, isotopic labeling, and other control experiments suggest a radical-based mechanism. The fact that the reaction is carried out at ambient conditions, uses ubiquitous and inexpensive reagents, boasts a wide scope, and can be made highly atom economic, makes this new methodology a very appealing option for this archetypical organic reaction.

Carry over of impurities: A detailed exemplification for glycopyrrolate (NVA237)

The original synthesis of glycopyrrolate (NVA237) was revised and shortened into an essentially one-pot process. Without isolating the intermediates, their purification became obsolete, thereby increasing the possibility of the carry over of impurities. For that reason, the actual, potential, and theoretical impurities of the starting materials cyclopentyl mandelic acid and 1-methyl-pyrrolidin-3-ol as well as byproducts which may occur during the synthesis were thoroughly investigated; furthermore, their transformation to possible impurities in the drug substance along the new synthetic route was performed to exclude them as actual impurities in the drug substance with certainty. The question is raised how detailed such investigation-which are fairly manageable for a simple product like glycopyrrolate-need to be.

Stereospecific Synthesis of Optically Active Succinic-d2 Acid

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