4,4'-(Ethyne-1,2-diyl)dibenzaldehyde (CAS 84907-55-1) from Ossila is a diphenylacetylene building block carrying an aldehyde group at each end. Supplied as a yellow powder with >98% purity, it serves as a dialdehyde linker for constructing cross-linked covalent organic framework (COF) networks, where its reactive aldehyde groups enable straightforward condensation chemistry.
Condensed with ethylenetetraaniline, it forms an imine-linked dual-pore COF capable of immobilising lipase PS; this system has reached 50% conversion in 80 minutes for the enantioselective reaction of racemic secondary alcohols. Combined with trimethyltriazine, it gives COFs that photocatalytically generate H2O2 at 1.8 mmol h-1 g-1.
Beyond frameworks, the compound is a precursor to fluorescent macromolecules. A Rothmund reaction with a pyrrole derivative, followed by boron complexation, yields an ethynyl-linked boron dipyrromethene (BODIPY) dye with a fluorescence quantum yield of 32%.
- Synthesis of imine-linked dual-pore COFs with ethylenetetraaniline for enzyme immobilisation.
- Biocatalysis using COF-immobilised lipase PS for enantioselective reactions of racemic secondary alcohols.
- Preparation of triazine-containing COFs for photocatalytic H2O2 production.
- Synthesis of ethynyl-linked BODIPY fluorescent dyes.
- Condensation with dithiosemicarbazides to form poly(thiosemicarbazone)s.
| Brand | Ossila |
|---|---|
| CAS number | 84907-55-1 |
| Molecular formula | C16H10O2 |
| Purity | >98% |
| Category | — |
| Pack sizes | 500 mg, 1 g, 5 g |
| Physical form | Yellow powder |
| Storage | — |
- Product code: B3571
- Full Name: 4,4'-(1,2-Ethynediyl)dibenzaldehyde
- Molecular Weight: 234.25 g/mol
- Synonyms: Di(4-formylphenyl)acetylene, Diphenylacetylene-4,4'-dicarbaldehyde, 4-[2-(4-formylphenyl)ethynyl]benzaldehyde, EDDA
- Classification / Family: Diphenylacetylenes, Dialdehyde ligands, COFs, Fluorescent dyes, Biocatalysis, photocatalysis
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