On the other hand, the protection of sp 2 -B organoboron into the pyramidalized sp 3 -B MIDA (N-methyliminodiacetic acid) boronates brings about tremendously improved stability, which thereby offering new opportunities to the latestage modification of organoborons. In this context, Previous studies have showcased that in certain cases, the MIDA boron moiety is by no means a bystander, but could confer interesting reactivity to the substrates. 17 For instance, independent work from Yudin and us uncovered an intriguing directing effect of MIDA boron in metal-catalyzed functionalized of alkenes and alkynes, respectively. This effect is attributed to a neighboring stereoelectronic stabilizing donation of electron density to boron, thanks to the hemilabile nature of the MIDA B-N dative bond. In line with the selenium-p-acid catalysis, we reason the similar neighboring group effect would offer a chance for a regiocontrolled allylic functionalization reactions. Herein, we report our realization of a selenium-catalyzed double bond transpositional allylic chlorination and imidation of allyl MIDA boronates (Scheme 1e). The reaction leads to the facile synthesis of multifunctional amphoteric building blocks with both the olefin and boron functionality being preserved as valuable handles for further chemical elaboration.