Copper(<scp>i</scp>)-catalysed regio- and diastereoselective intramolecular alkylboration of terminal allenes <i>via</i> allylcopper(<scp>i</scp>) isomerization
作者:Yu Ozawa、Hiroaki Iwamoto、Hajime Ito
DOI:10.1039/c8cc02692k
日期:——
We report the first copper(I)-catalysed intramolecular alkylboration of terminal allenes with an alkyl halide moiety. The reaction provides alkenylboronates bearing a four-membered ring structure with high regio- and diastereocontrol. A possible reaction mechanism is proposed, involving the facile isomerization of an allylcopper(I) intermediate. A DFT study explains the experimental regio- and diastereoselectivity