Sulfone Group as a Versatile and Removable Directing Group for Asymmetric Transfer Hydrogenation of Ketones
作者:Vijyesh K. Vyas、Guy J. Clarkson、Martin Wills
DOI:10.1002/anie.202004658
日期:2020.8.17
The sulfone functional group has a strong capacity to direct the asymmetrictransferhydrogenation (ATH) of ketones in the presence of [(arene)Ru(TsDPEN)H] complexes by adopting a position distal to the η6‐arene ring. This preference provides a means for the prediction of the sense of asymmetric reduction. The sulfone group also facilitates the formation of a range of reduction substrates, and its
Dilithium Tetrachloromanganate an Effective Reagent for
Regioselective Ring Opening of Epoxides with Grignard Reagents
作者:Santosh S. Devkate、Arvind S. Burungale、Ashok S. Pise
DOI:10.14233/ajchem.2019.22270
日期:2019.11.30
The epoxides were obtained from substituted phenols and epichlorohydrin by reported methods. The regioselective ring opening of epoxides were studied in different solvents by reaction with Grignard’s reagent in presence of dilithium tetrachloromanganate.
153. The constituents of natural phenolic resins. Part X. Structure of l-matairesinol dimethyl ether and observations on the condensation of reactive methylene groups with O-methyleugenol oxide