Highly Stereoselective [3+2] Cycloadditions of Chiral Palladium-Containing<i>N</i><sup>1</sup>-1,3-Dipoles: A Divergent Approach to Enantioenriched Spirooxindoles
A catalytic asymmetric [3+2] cycloaddition reaction of chiral palladium‐containing N1‐1,3‐dipoles with methyleneindolinones has been successfully developed. The reaction allows an efficient construction of 3,3′‐pyrrolinyl spirooxindoles with high yields and excellent stereoselectivities (up to 93 % yield, 19:1 d.r. and >99 % ee). A synthetic application of this methodology is demonstrated and a stereocontrol