Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Zhu et al. (2016) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: