17597-25-0Relevant articles and documents
Lithium naphthalenide induced reductive cleavage of α,β-epoxy ketones: An efficient procedure for the preparation of β-hydroxy ketones
Jankowska, Renata,Mhehe, George L.,Liu, Hsing-Jang
, p. 1581 - 1582 (1999)
Lithium naphthalenide presents itself as a mild and efficient reagent for the cleavage of α,β-epoxy ketones to give the corresponding β-hydroxy ketones in good yields.
Unambiguous assignment of 13C NMR signals in epimeric 4,5-epoxy-3-oxo-steroids assisted by X-ray diffraction and Gauge Invariant Atomic Orbitals calculation of absolute isotropic shieldings
Labra-Vazquez, Pablo,Galano, Annia,Romero-Avila, Margarita,Flores-Alamo, Marcos,Iglesias-Arteaga, Martin A.
, p. 107 - 125 (2013/09/12)
Complete assignments of the 13C signals of diastereomeric 4,5-epoxy-3-oxo steroids based on a combination of 1D and 2D NMR techniques are described The assignments were corroborated or corrected by calculation of the absolute isotropic 13C NMR shieldings using the Gauge Invariant Atomic Orbitals (GIAO) method at B3LYP/6-31+G(d,p) level. ARKAT-USA, Inc.
Highly efficient alkene epoxidation and aziridination catalyzed by iron(II) salt + 4,4′,4″-trichloro-2,2′:6′,2″-terpyridine/ 4,4″-dichloro-4′-O-PEG-OCH3-2,2′:6′,2″- terpyridine
Liu, Peng,Wong, Ella Lai-Ming,Yuen, Angella Wing-Hoi,Che, Chi-Ming
supporting information; experimental part, p. 3275 - 3278 (2009/05/27)
(Chemical Equation Presented) "Iron(II) salt + 4,4′,4″- trichloro-2,2′:6′,2″-terpyridine" is an effective catalyst for epoxidation and aziridination of alkenes and intramolecular amidation of sulfamate esters. The epoxidation of allylic-substituted cycloalkenes achieved excellent diastereoselectivities up to 90%. ESI-MS results supported the formation of iron-oxo and -imido intermediates. Derivitization of Cl3terpy to O-PEG-OCH3-Cl2terpy renders the terpyridine unit to be recyclable, and the "iron(II) salt + 4,4″-dichloro-4′-O-PEG-OCH3-2,2′:6′,2″- terpyridine" protocol can be reused without a significant loss of catalytic activity in the alkene epoxidation.