A 1,3-boron shift reaction of homoallenylboronates to synthesise 2-boryl-1,3-dienes.

Ryota SakamotoMinami OdagiMasahiro Yamanaka Kazuo Nagasawa

Published in: Chemical communications (Cambridge, England) (2023)

We describe a 1,3-boron shift-type reaction of homoallenylboronates at the center (sp) carbon in allenes to afford 2-boryl-1,3-dienes with a variety of substituents. Notably, this reaction occurs in situ with allenylboronates in the presence of carbamate and a small excess of sec -BuLi, and it is not necessary to isolate the unstable homoallenylboronates.

Keyphrases

electron transfer