Ontology highlight
ABSTRACT:
SUBMITTER: Gannarapu MR
PROVIDER: S-EPMC7132161 | biostudies-literature | 2020 Apr
REPOSITORIES: biostudies-literature
iScience 20200320 4
We disclose the Cu-catalyzed enantioselective synthesis of 3-methyl-3-propargyl-indolines, which contain a quaternary stereogenic carbon center, via the decarboxylative [4 + 1] annulation of 4-methyl-4-propargyl-benzoxazinanones with variety of sulfur ylides. The reaction proceeds predominantly through a γ-attack at the Cu-allenylidene intermediates by sulfur ylides to provide the corresponding indolines in good yield and high enantioselectivity (up to 91% ee). In contrast, the reaction of 4-tri ...[more]