Enantioselective, Catalytic Fluorolactonization Reactions with a Nucleophilic Fluoride Source
作者:Eric M. Woerly、Steven M. Banik、Eric N. Jacobsen
DOI:10.1021/jacs.6b09499
日期:2016.10.26
fluoride source with a peracid stoichiometric oxidant and provides access to lactones containing fluorine-bearing stereogenic centers in high enantio- and diastereoselectivity. The regioselectivity observed in these lactonization reactions is complementary to that obtained with established asymmetric electrophilic fluorination protocols.
Enantioselective Oxidation of Alkenylbenzoates Catalyzed by Chiral Hypervalent Iodine(III) To Yield 4-Hydroxyisochroman-1-ones
作者:Mio Shimogaki、Morifumi Fujita、Takashi Sugimura
DOI:10.1002/ejoc.201300959
日期:2013.11
oxylactonization of ortho-alk-1-enylbenzoates with chiralhypervalentiodine(III) reagents yielded 3-alkyl-4-hydroxyisochroman-1-ones with high enantiomeric purity (ca. 90 % ee). The enantioselective oxidation was also performed under catalytic conditions, in which a catalytic amount (10 mol-%) of a chiral iodoarene was oxidized to the hypervalentiodine species in situ using a stoichiometric co-oxidant