bibliographicCitation |
Xie Y, Que Y, Li T, Zhu L, Yu C, Yao C. N-Heterocyclic carbene-catalyzed [4 + 2] cyclization of 2-bromo-2-enal with 3-alkylenyloxindoles: efficient assembly of spirocarbocyclic oxindole. Org Biomol Chem. 2015 Feb 14;13(6):1829–35. doi: 10.1039/c4ob01706d. PMID: 25501791. |