6-methyl-2-octynyl-1,3,6,2-dioxazaborocane-4,8-dione 在
[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]gold bis(trifluoromethanesulfonyl)imidate 、
8-isopropylquinoline N-oxide 作用下,
以80 %的产率得到6-methyl-2-(2-oxo-5-propylcyclopentyl)-1,3,6,2-dioxazaborocane-4,8-dione