title: Construction of 1-pyrroline skeletons by Lewis acid-mediated conjugate addition of vinyl azides.
abstract: Lewis acid-mediated conjugate addition of vinyl azides to electron-deficient alkenes led to the efficient construction of 1-pyrroline skeletons. The reactions of vinyl azides with 3-alkylidene-2-oxoindolines afford 3',4'-dihydrospiro[indoline-3,2'-pyrrol]-2-ones in a diastereoselective fashion, whereas those with dimethyl 2-alkylidenemalonates provide 4,5-dihydro-3H-pyrroles.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. shunsuke@ntu.edu.sg.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhu
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Chiba