ArticleACS macro letters2024
Accessing Cyclobutane Polymers: Overcoming Synthetic Challenges via Efficient Continuous Flow [2 + 2] Photopolymerization.
Article in ACS macro letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Modular diastereoselective synthesis of hindered cyclobutane amino nitriles through triplet nitrene-mediated ring expansion.Nature chemistry · 2026Article
- Solution-Processable, Ladder-Branched Polyimides of Intrinsic Microporosity by [4+4] Cycloaddition for Membrane Gas Separation.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Article
- Template-Directed Selective Photodimerization Reactions of 5-Arylpenta-2,4-dienoic Acids.The Journal of organic chemistry · 2024Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
We report an improved and efficient method to prepare well-defined, structurally complex truxinate cyclobutane polymers via a thioxanthone sensitized solution state [2 + 2] photopolymerization. Monomers with varying electron density and structure polymerize in good to excellent yields to afford a library of 42 polyesters. Monomers with internal olefin separation distances of greater than 5 Å undergo polymerization via intermolecular [2 + 2] photocycloaddition readily, as opposed to the intramolecular [2 + 2] photocycloaddition observed in monomers with olefins in closer proximity. Use of a continuous flow reactor decreases reaction time, increases polymer molecular weight, and decreases dispersity compared to batch reactions. Furthermore, under continuous flow, polymerization is readily scalable beyond what is possible with batch reactions. This advancement ushers truxinate cyclobutane-based polyesters, which have been historically limited to a few examples and only research scale quantities, to the forefront of development as new materials for potential use across industry sectors.
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Registered trials
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