36094-39-0Relevant academic research and scientific papers
Oxidative Ring Expansion of Cyclobutanols: Access to Functionalized 1,2-Dioxanes
Lapez, Mara-A Marta-N,Jamey, Nicolas,Pinet, Alexis,Figadeìre, Bruno,Ferri, Laurent
supporting information, p. 1626 - 1631 (2021/03/08)
Cyclobutanols undergo an oxidative ring expansion with Co(acac)2 and triplet oxygen to give 1,2-dioxanols. The formation of an alkoxy radical drives the regioselective cleavage of the ring on the more substituted side before insertion of molecular oxygen. The reaction is particularly effective on secondary cyclobutanols but works also on certain tertiary alcohols. Further substitution with neutral nucleophiles under catalytic Lewis acid conditions led to original 1,2-dioxanes with a preferred 3,6-cis-configuration.
Catalytic and regioselective ring expansion of arylcyclobutanones with trimethylsilyldiazomethane. Ligand-dependent entry to β-ketosilane or enolsilane adducts
Dabrowski, Jennifer A.,Moebius, David C.,Wommack, Andrew J.,Kornahrens, Anne F.,Kingsbury, Jason S.
supporting information; experimental part, p. 3598 - 3601 (2010/11/04)
Divergent reactivity is uncovered in the homologation of arylcyclobutanones with trimethylsilyldiazomethane. With Sc(OTf)3 as catalyst, enolsilanes are obtained with a high preference for methylene migration. By contrast, Sc(hfac)3 g
EXPLORATORY STUDY ON α-METALLO SELENONES : Original Syntheses of Oxaspiropentanes.
Krief, A.,Dumont W.,Laboureur, J.L.
, p. 3265 - 3268 (2007/10/02)
Oxaspiropentanes have been obtained from α-metallocyclopropyl phenyl selenones and carbonyl compounds and on reaction of a base with β-hydroxyalkyl cyclopropyl selenones.The original reactivity of other β-hydroxyalkyl selenones is also disclosed.
