ol7b02161_si_001.pdf (2.25 MB)
Access to Cyclobutadienes via an Organocatalytic Dienamine–Iminium–Allenamine Cascade Approach
Version 2 2017-12-11, 19:56
Version 1 2017-08-17, 15:04
journal contribution
posted on 2017-09-01, 00:00 authored by Wenjun Li, Ming Lang, Jian WangA new organocatalytic
route to cyclobutadienes from α,β-unsaturated
aldehydes and ynals is described. This protocol
allows a broad substrate scope and mild conditions. Furthermore, a
proposed mechanism of a dienamine–iminium–allenamine
cascade process is discussed.