1-(Anthracen-9-ylmethyl)-6-chloroindole-2,3-dione 、
3-丁炔-2-酮 在
异丙烯-2,3-二羟-1,4-双二丙基膦丁烷 作用下,
以
乙醚 为溶剂,
反应 24.0h,
生成 (R)-1'-(anthracen-9-ylmethyl)-6'-chloro-5-methylene-3H-spiro[furan-2,3'-indoline]-2',4(5H)-dione 、 (S)-1'-(anthracen-9-ylmethyl)-6'-chloro-5-methylene-3H-spiro[furan-2,3'-indoline]-2',4(5H)-dione