1177357-67-3Relevant articles and documents
Synergistic interplay of a non-heme iron catalyst and amino acid coligands in H2O2 activation for asymmetric epoxidation of α-alkyl-substituted styrenes
Cuss, Olaf,Ribas, Xavi,Lloret-Fillol, Julio,Costas, Miquel
, p. 2729 - 2733 (2015/03/04)
Highly enantioselective epoxidation of α-substituted styrenes with aqueous H2O2 is described by using a chiral iron complex as the catalyst and N-protected amino acids (AAs) as coligands. The amino acids synergistically cooperate with the iron center in promoting an efficient activation of H2O2 to catalyze epoxidation of this challenging class of substrates with good yields and stereoselectivities (up to 97% ee) in short reaction times.
Asymmetric epoxidation catalyzed by α,α-dimethylmorpholinone ketone. Methyl group effect on spiro and planar transition states
Wong, O. Andrea,Wang, Bin,Zhao, Mei-Xin,Shi, Yian
supporting information; experimental part, p. 6335 - 6338 (2009/12/26)
(Chemical Equation Presented) Asymmetric epoxidation of olefins by using an α,α-dimethylmorpholinone-containing chiral ketone catalyst (4) has been investigated. This ketone, which has the combined features of several previously studied catalysts, is an effective catalyst for trans- and trisubstituted olefins, and up to 97% ee has been achieved. The R, R-dimethyl group has significant impact on spiro and planar transition states.