18355-75-4

Basic information

• Product Name: 2,3-DIFLUOROBENZOIC ACID
• Synonyms: RARECHEM AL BO 0251;TIMTEC-BB SBB006679;CHEMPACIFIC 39931;BUTTPARK 45\01-40;LABOTEST-BB LT00453855;2,3-DIFLUOROBENZAMIDE;2,3-Difluorobenzamide 97%;2,3-Difluorobenzamide97%
• CAS NO: 18355-75-4
• Molecular Formula: C₇H₅F₂NO
• Molecular Weight: 158.1
• Product Categories: Anilines, Amides & Amines;Fluorine Compounds;Amides;Carbonyl Compounds;Organic Building Blocks
• Mol File: 18355-75-4.mol
• Article Data: 3

Chemical Properties

• Melting Point: 163-165 °C(lit.)
• Boiling Point: 197.0±30.0℃ (760 Torr)
• Flash Point: 73.0±24.6℃
• Appearance: /
• Density: 1.348±0.06 g/cm3 (20 ºC 760 Torr)
• Vapor Pressure: 0.387mmHg at 25°C
• Refractive Index: 1.515
• PKA: 14.72±0.50(Predicted)
• BRN: 2965250
• CAS DataBase Reference: 2,3-DIFLUOROBENZOIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-DIFLUOROBENZOIC ACID(18355-75-4)
• EPA Substance Registry System: 2,3-DIFLUOROBENZOIC ACID(18355-75-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-37/39-36/37
• WGK Germany: 3
• HazardClass: IRRITANT
• Hazardous Substances Data: 18355-75-4(Hazardous Substances Data)

Usage

General Description

2,3-Difluorobenzoic acid is a type of fluorobenzoic acid with the molecular formula C7H4F2O2. It is a white solid that is soluble in organic solvents, and is widely used as an intermediate in the manufacture of pharmaceuticals and agrochemicals. It is also used as a building block in organic synthesis, particularly in the production of other fluorinated aromatic compounds. 2,3-Difluorobenzoic acid is considered to be relatively stable under normal conditions, and its primary hazard is related to its potential to irritate the skin, eyes, and respiratory system upon prolonged exposure.

InChI:InChI=1/C7H5F2NO/c8-5-3-1-2-4(6(5)9)7(10)11/h1-3H,(H2,10,11)

Upstream product

• 55-21-0 benzamide 
• 2646-91-5 2,3-difluorobenzaldehyde 
• 21524-39-0 2,3-difluorobenzonitrile 

Downstream Products

• 1307313-25-2 3-fluoro-2-[4-[(2-fluorospiro[4,5-dihydrothieno[2,3-c]pyran-7,4'-piperidine]-1'-yl)methyl]-3-methylpyrazol-1-yl]benzamide (L)-tartrate 
• 1307314-05-1 3-fluoro-2-(4-formyl-3-methylpyrazol-1-yl)benzamide 

Relevant articles and documents

Ti-superoxide catalyzed oxidative amidation of aldehydes with saccharin as nitrogen source: Synthesis of primary amides

A new heterogeneous catalytic system (Ti-superoxide/saccharin/TBHP) has been developed that efficiently catalyzes oxidative amidation of aldehydes to produce various primary amides. The protocol employs saccharin as amine source and was found to tolerate a wide range of substrates with different functional groups. Moderate to excellent yields, catalyst reusability and operational simplicity are the main highlights. A possible mechanism and the role of the catalyst in oxidative amidation have also been discussed.

Histamine analogues. 33rd communication: 2-phenylhistamines with high histamine H1-agonistic activity

2-Phenylhistamines with various substituents at the phenyl ring were synthesized and the influence of substitution in ortho, meta or para position on histamine H1-agonistic activity was investigated.Compounds with high activity occured in the meta phenyl series.Increased activity in the guinea-pig ileum assay was achieved by monosubstitution with halogen on the phenyl ring. 2-ethanamine (12) is the most potent highly selective H1-agonist known so far, showing 87percent relative potency compared with histamine and full efficacy at theH1-receptor.Relative activities of the 3-chloro analogue (11) and the 3-methyl analogue (13) are 81percent and 29percent, respectively.Histamine H2-activity could not be detected. 2-Phenylhistamines are available via reaction of the corresponding benzimidates with 2-oxo-4-phthalimido-1-butyl acetate (6) in liquid ammonia.