Organozinc reagents (R2Zn and RZnX) have proved to be versatile synthetic reagents in the last decades1. Complex functionalized organozinc reagents have great potential for natural-product synthesis2. Unfortunately they are relatively poor nucleophiles and do not react directly with most useful electrophiles such as aldehydes, ketones and organic halides. In 1978, Mukaiyama first reported that Et2Zn could add smoothly to benzaldehyde in the ...