Nassar, Youssef; Piva, Olivier published an article in 2020, the title of the article was A short route to access oxaspiro[n,3,3]propellanes.Reference of Methyl 2-cyclopentanonecarboxylate And the article contains the following content:
Novel access to oxaspiro[n,3,3]propellanes was developed from bicyclic lactones directly prepared by a photochem. hydroxymethylation or alternatively by a three-step sequence. The presence of addnl. hydroxy- and propargylic groups, a second cyclization catalyzed by silver or bismuth salts, led to the propellane structure which was finally transformed into spiranic derivatives by a Simmons-Smith reaction or condensation with α-ketoesters. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Reference of Methyl 2-cyclopentanonecarboxylate
The Article related to oxo propynyl cyclohexane carboxylate silver bismuth catalyzed cyclization, oxaspirocyclopropane propellane preparation, oxaspiro lactone propellane preparation, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.Reference of Methyl 2-cyclopentanonecarboxylate
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