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Description
TCI D4205 1,5-Dichloro-2,4-dinitrobenzene is a benzene compound substituted with two chlorine atoms and two nitro groups, classified as a non-heterocyclic building block. In the laboratory, this material serves as a highly activated aromatic electrophile, meaning a substrate that is ready to accept nucleophilic attack in order to displace a chlorine atom. The presence of two strongly electron-withdrawing nitro groups makes it a classic choice whenever researchers need to install amine, thiol, alkoxy, or other nucleophilic groups onto an aromatic ring without requiring expensive transition metal catalysts that demand special reaction conditions.
The property that makes it so widely selected is its high yet controllable nucleophilic aromatic substitution reactivity. Because there are two equivalent chlorine centers, this compound can be used in mono-substitution mode to produce asymmetric derivatives, or in di-substitution mode to build symmetrical and macrocyclic structures. The arrangement of the nitro groups at positions 2 and 4 provides effective activation toward both chlorine positions, so reactions generally proceed under reasonable thermal conditions without exotic reagents. The resulting derivatives are also frequently colored and easy to monitor by chromatography.
In Indonesian laboratories, this building block is typically used in university and institutional synthetic organic chemistry work, where budgets and equipment often favor metal-free routes over catalytic cross-coupling. It suits research groups preparing aromatic amine derivatives, dye and pigment intermediates, and functionalized ligands, as well as teaching laboratories that demonstrate nucleophilic aromatic substitution as a core mechanism. Its straightforward thermal handling means it can be run with standard glassware and conventional heating rather than specialized inert-atmosphere setups.
Laboratory Applications
- Nucleophilic aromatic substitution studies: the two nitro groups strongly activate both chlorine positions, giving a dependable substrate for teaching and investigating SNAr mechanisms under ordinary thermal conditions.
- Synthesis of asymmetric aromatic derivatives: controlled mono-substitution at one of the two equivalent chlorine centers leaves the second chlorine available for a different nucleophile in a later step.
- Construction of symmetrical and macrocyclic structures: di-substitution with bifunctional nucleophiles lets researchers assemble symmetrical scaffolds and ring systems without transition metal catalysts or specialized coupling reagents.
- Preparation of aryl amine, thiol, and alkoxy compounds: the activated ring accepts amine, thiol, and alkoxide nucleophiles directly, offering a metal-free alternative to catalytic cross-coupling chemistry.
- Chromatographic method development and reaction monitoring: derivatives formed from this compound are frequently colored, making reaction progress easy to follow by chromatography during optimization work.
Specifications
- Brand: TCI
- CAS Number: 3698-83-7
- Chemical name: 1,5-Dichloro-2,4-dinitrobenzene
- Catalog code: D4205
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Pack sizes: available in standard TCI catalog pack sizes; please confirm the required quantity when ordering
- Storage: store in a tightly closed container in a cool, dry, well-ventilated place away from incompatible materials
Handling and Storage
Store this material in its original tightly closed container in a cool, dry and well-ventilated area, protected from direct sunlight, heat sources and moisture. Glass or manufacturer-supplied containers are appropriate, and the container should be resealed promptly after each use to prevent contamination. Keep it separated from strong bases, reducing agents and other incompatible chemicals. As a nitroaromatic compound, it should be handled in a fume hood with gloves, safety glasses and a laboratory coat, avoiding skin contact, eye contact and inhalation of dust. Weigh and transfer the solid carefully to minimize dust generation, wash hands thoroughly after handling, and dispose of residues and contaminated materials as chemical waste according to institutional procedures. Always consult the manufacturer's Safety Data Sheet before use.
