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  1. Wikipedia
    https://en.wikipedia.org/wiki/Cyclopropene

    Cyclopropene - Wikipedia

    • Cyclopropene is an organic compound with the formula C3H4. It is the simplest cycloalkene. Because the ring is highly strained, cyclopropene is difficult to prepare and highly reactive. This colorless gas has been the subject for many fundamental studies of bonding and reactivity. It does not occur naturally, but derivatives are known in some fatty acids. Derivatives … 展开

    Structure and bonding

    The molecule has a triangular structure. The reduced length of the double bond compared to a single bond causes the … 展开

    Synthesis of cyclopropene and derivatives

    The first confirmed synthesis of cyclopropene, carried out by Dem'yanov and Doyarenko, involved the thermal decomposition of trimethylcyclopropylammonium hydroxide over platinized cl… 展开

    Reactions of cyclopropene

    Studies on cyclopropene mainly focus on the consequences of its high ring strain. At 425 °C, cyclopropene isomerizes to methylacetylene (propyne).
    Attempted fractional distillation of cyclopropene at … 展开

    Accessing elusive σ -type cyclopropenium cation equivalents …
    Here we introduce electrophilic cyclopropenyl-gold(III) species as equivalents of σ-type CPCs, which can then react with terminal alkynes and vinylboronic acids.
    Nature · https://www.nature.com/articles/s4155…
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    Structure and bonding
    Synthesis of cyclopropene and derivatives
    Reactions of cyclopropene
     
  1. Nature
    https://www.nature.com/articles/s41557-02…

    Accessing elusive σ -type cyclopropenium cation …

    2024年5月23日 · Here we introduce electrophilic cyclopropenyl-gold(III) species as equivalents of σ-type CPCs, which can then react with terminal alkynes and vinylboronic acids.

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  3. Nature
    https://www.nature.com/articles/s41557-02…

    Cyclopropenium functionalization - Nature Chemistry

    2024年5月23日 · Now, writing in Nature Chemistry, Jérôme Waser and co-workers introduce a σ-type cyclopropenyl synthon by utilizing a class of hypervalent iodine reagents coined cyclopropenyl benziodoxole ...

  4. Wikipedia
    https://en.wikipedia.org/wiki/Cyclopropenium_ion

    Cyclopropenium ion - Wikipedia

  5. Nature
    https://www.nature.com/articles/s41929-024-01183-8

    Gilding σ -type cyclopropenium cations - Nature

  6. Chemistry LibreTexts
    https://chem.libretexts.org/Bookshelves/Organic...

    Identifing Aromatic and Anti-Aromatic Compounds

  7. 其他用户还问了以下问题
    Are cyclopropenyl cations stable?
    Salts of many cyclopropenyl cations have been characterized. Their stability varies according to the steric and inductive effects of the substituents. Salts of triphenylcyclopropenium were first reported by Ronald Breslow in 1957.

    Cyclopropenium ion - Wikipedia

    en.wikipedia.org
    Can cyclopropenes be synthesised?
    Considering the versatile role of cyclopropenes in synthetic chemistry 25, chemical biology 26, and medicinal 27 and material 28 chemistry, the availability of broadly applicable synthetic equivalents of σ -type CPCs would facilitate the synthesis of functionalized cyclopropenes and accelerate progress in these areas.

    Accessing elusive σ-type cyclopropenium cation equivalents through

    nature.com
    Are cyclopropenyl cations planar?
    Consistent with this prediction, the C 3 H 3 core is planar and the C–C bonds are equivalent. In the case of the cation in [C 3 (SiMe 3) 3] +SbCl− 6, the ring C–C distances range from 1.374 (2) to 1.392 (2) Å. Salts of many cyclopropenyl cations have been characterized.

    Cyclopropenium ion - Wikipedia

    en.wikipedia.org
    Does cyclopropene occur naturally?
    It does not occur naturally, but derivatives are known in some fatty acids. Derivatives of cyclopropene are used commercially to control ripening of some fruit.

    Cyclopropene - Wikipedia

    en.wikipedia.org
    Is cyclopropenium a cation?
    The cation and some simple derivatives have been identified in the atmosphere of the Saturnian moon Titan. With two π electrons, the cyclopropenium cation class obeys Hückel’s rules of aromaticity for 4n + 2 electrons since, in this case, n = 0. Consistent with this prediction, the C 3 H 3 core is planar and the C–C bonds are equivalent.

    Cyclopropenium ion - Wikipedia

    en.wikipedia.org
    What is cyclopropenyl functional group?
    In this vein, the cyclopropenyl functional group is of high interest as the smallest alkene-containing cycle, with immense strain energy in its bonds (54.6 kcal mol –1).

    Cyclopropenium functionalization - Nature Chemistry

    nature.com
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  8. ScienceDirect
    https://www.sciencedirect.com/science/article/pii/S0032063313001864

    Cyclopropenyl cation – the simplest Huckel's aromatic molecule – …

  9. PubChem
    https://pubchem.ncbi.nlm.nih.gov/compoun…

    Cyclopropene | C3H4 | CID 123173 - PubChem

    2021年5月7日 · Cyclopropene | C3H4 | CID 123173 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety ...

  10. PubChem
    https://pubchem.ncbi.nlm.nih.gov/compoun…

    Cyclopropenyl radical | C3H3 | CID 141453 - PubChem

    2005年8月8日 · Cyclopropenyl radical | C3H3 | CID 141453 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

  11. Archive ouverte HAL
    https://hal.science/hal-00916307/document
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    Cyclopropenyl Cation - the Simplest Huckel's Aromatic …