ArticleOrganic letters2026
Crystalline Silaspiropentane and Its Rearrangement to Silacyclobutane.
Article in Organic letters, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The first crystallographically characterized silaspiropentane, a molecule containing 4 carbon atoms and 1 silicon atom in two fused three-membered rings, has been isolated. This species was synthesized from the addition of a well-defined silylene compound to methylidene cyclopropane. The silaspiropentane was shown to undergo a thermal rearrangement to the corresponding methylene silacyclobutane in solution. Kinetics show that this is a first-order reaction with little entropic cost to approaching the transition state (Δ
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