3-Chloro-5-fluoropyridine: Comprehensive User Guide
Table of Contents
1. Product Overview & Specification Comparison
3-Chloro-5-fluoropyridine (CAS 3746-68-3) is a halogenated pyridine derivative with molecular formula C5H2ClF1N and molecular weight 131.53 g/mol. This white crystalline solid boasts ≥98% purity and requires storage at 2-8°C in inert conditions.
Parameter | 3-Chloro-5-fluoropyridine | 3-Bromo-5-fluoropyridine | 2-Chloro-4-fluoropyridine |
---|---|---|---|
Reactivity | High (Cl substituent) | Moderate | Low |
Pharma Compatibility | ★★★★☆ | ★★★☆☆ | ★★☆☆☆ |
2. Key Applications & Industrial Uses
This versatile intermediate enables:
- Pharmaceutical Synthesis: Core building block for kinase inhibitors and CNS drugs
- Agrochemical Production: Key precursor for next-gen herbicides
- Material Science: Ligand in catalytic systems for polymerization
3. Usage Scenarios & Best Practices
Scenario 1: Suzuki-Miyaura Coupling
Recommended conditions:
- Pd(PPh3)4 (2 mol%)
- K2CO3 base in DME/H2O (3:1)
- 70°C, 12h reaction time
4. Real-World Client Case Studies
Case 1: Top 10 Pharma Company (2023)
Challenge: Develop third-generation EGFR inhibitor
Solution: Used as coupling partner in final API step
Result: 92% yield improvement vs previous intermediates
Case 2: EU Agrochemical Leader (2022)
Challenge: Create low-toxicity fungicide
Solution: Central scaffold for molecular optimization
Result: Achieved EC50 = 0.8 μM against Botrytis
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