A catalytic asymmetric construction of a tetrahydroquinoline-based spirooxindole framework via a diastereo- and enantioselective decarboxylative [4+2] cycloaddition

作者：Mei Guang Jian; Li Dan; Zhou Gui Xiang; Shi Qian; Cao Zheng; Shi Feng

来源：Chemical communications, 2017, 53(72): 10030-10033.

DOI：10.1039/c7cc05595a

A catalytic asymmetric decarboxylative [4+2] cycloaddition of vinyl benzoxazinanones with methyleneindolinones has been established, which provided a series of chiral tetrahydroquinoline-based 3,3′-spirooxindoles in high yields (up to 96%) and with excellent diastereo- and enantioselectivities (all >95:5 d.r., up to 99% ee). This reaction not only represents the first example of catalytic enantioselective [4+2] cycloaddition between methyleneindolinones and Pd-containing 1,4-dipoles, but also demonstrates the great practicability of catalytic asymmetric decarboxylative cycloadditions in the synthesis of enantio-enriched polycyclic compounds.

• 出版日期2017-9-16