80-53-5Relevant articles and documents
Fe-Catalyzed Anaerobic Mukaiyama-Type Hydration of Alkenes using Nitroarenes
Bhunia, Anup,Bergander, Klaus,Daniliuc, Constantin Gabriel,Studer, Armido
supporting information, p. 8313 - 8320 (2021/03/08)
Hydration of alkenes using first row transition metals (Fe, Co, Mn) under oxygen atmosphere (Mukaiyama-type hydration) is highly practical for alkene functionalization in complex synthesis. Different hydration protocols have been developed, however, control of the stereoselectivity remains a challenge. Herein, highly diastereoselective Fe-catalyzed anaerobic Markovnikov-selective hydration of alkenes using nitroarenes as oxygenation reagents is reported. The nitro moiety is not well explored in radical chemistry and nitroarenes are known to suppress free radical processes. Our findings show the potential of cheap nitroarenes as oxygen donors in radical transformations. Secondary and tertiary alcohols were prepared with excellent Markovnikov-selectivity. The method features large functional group tolerance and is also applicable for late-stage chemical functionalization. The anaerobic protocol outperforms existing hydration methodology in terms of reaction efficiency and selectivity.
Hydration of α-pinene in a triphasic system consisting of α-pinene, water, and Cs2.5H0.5PW12O 40-SiO2 composite
Horita, Naoto,Kamiya, Yuichi,Okuhara, Toshio
, p. 1346 - 1347 (2007/10/03)
Cs2.5H0.5PW12O40-SiO 2 composite combined with (3-aminopropyl)triethoxysilane exhibited greater activity and selectivity for hydration of α-pinene at 333 K in a triphasic system (α-pinene/water/solid acid) compared to previously reported water-tolerant catalysts such as zeolites, polymer-resins (Amberlyst 15 and Nafion-H), oxides, and liquid acids such as H3PW 12O40 and H2SO4. The selectivity toward alcohols, including mono- and dialcohols, was approximately 80% over Cs2.5H0.5PW12O40-SiO2 composite. Copyright
Chemistry Around δ-Terpineol
Bull, Steven D.,Carman, Raymond M.
, p. 1869 - 1880 (2007/10/02)
Bromination, hydroboration, epoxidation, 1,2-dihydroxylation and acidification reactions upon δ-terpineol are described.