95932-31-3Relevant articles and documents
An eco-sustainable erbium(iii)-catalyzed method for formation/cleavage of O-tert-butoxy carbonates
Procopio, Antonio,Cravotto, Giancarlo,Oliverio, Manuela,Costanzo, Paola,Nardi, Monica,Paonessa, Rosina
, p. 436 - 443 (2011)
A new simple and effective method for the formation/cleavage of O-tert-butoxy carbonates of alcohols and phenols is proposed. Mesoporous silica-supported Er(iii) (ErIII-MCM-41) was used as an efficient and reusable solid catalyst in the solvent-free ultrasound-assisted synthesis of Boc-carbonate derivatives of a wide range of alcohols and phenols. The fast, selective deprotection of Boc-derivatives is achieved with a very low amount of Er(OTf)3 in ethanol under microwave irradiation. Therefore, the entire protection/de-protection process is very attractive, from the point of view of sustainability.
Synthesis of mono- and polycyclic tricarbonyliron cyclohexa-2,4-dienone complexes and phenols from tosylhydrazones of acyclic dienone complexes
Franck-Neumann, Michel,Geoffroy, Philippe,Gassmann, Dominique
, p. 2054 - 2058 (2007/10/03)
Cyclohexa-2,4-dienones stabilized by coordination to tricarbonyliron are obtained when the tosylhydrazones of tricarbonyliron-complexed α-dienones are thermolyzed in the presence of strong bases. This cyclocarbonylation reaction of carbenic intermediates is fairly general and can be used to synthesize various mono and polycyclic cyclohexadienone complexes or their decomplexed phenolic tautomers, and among them a new salicylate in the phenanthrene series.
