An asymmetric Heck reaction−carbanion capture process was realized for the first time, making possible the catalytic asymmetricsynthesis of various functionalized bicyclo[3.3.0]octane derivatives 6 in up to 94% ee. Sodium bromide had interesting effects on this asymmetric Heck reaction−carbanion capture process, and these effects were useful for improving the enantiomeric excess. Furthermore, the