1.
Org Lett
; 17(4): 1002-5, 2015 Feb 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-25647408
RESUMO
The cycloisomerization of allene-enol ethers under Bi(OTf)3 catalysis was developed as a novel "atom-economic" tool for accessing interesting functionalized cyclopentene rings. Bi(OTf)3 was shown to promote selectively the activation of the enol ether moiety of the substrate. This catalytic methodology was further extended to the synthesis of dihydrofuran and oxaspirocycle derivatives.