1431884-99-9Relevant academic research and scientific papers
DDQ-mediated direct Intramolecular-Dehydrogenative-Coupling (IDC): Expeditious approach to the tetracyclic core of ergot alkaloids
Bhunia, Subhajit,Ghosh, Santanu,Dey, Dhananjay,Bisai, Alakesh
, p. 2426 - 2429 (2013/06/27)
An efficient route to 2-oxindoles bearing an all-carbon quaternary center at the pseudobenzylic position has been developed via a DDQ-mediated Intramolecular-Dehydrogenative-Coupling (IDC). The methodology involves a one-pot C-alkylation of β-N-arylamido esters (7) concomitant with dehydrogenative-coupling in the presence of stoichiometric amount of DDQ. A tentative mechanistic route has been proposed for the oxidative coupling. The methodology provides a two-step entry to the ergoline structure of ergot alkaloids.
