α-Carbonyl Cations in Sulfoxide-Driven Oxidative Cyclizations
作者:Tobias Stopka、Meike Niggemann、Nuno Maulide
DOI:10.1002/anie.201705964
日期:2017.10.16
The selective, metal‐free generation of α‐carbonyl cations from simple internal alkynes was accomplished by the addition of a sulfoxide to a densely substituted vinyl cation. The high reactivity of the α‐carbonyl cations was found to efficiently induce hydrogen and even carbon shift reactions with unusual selecivities. Complex compounds with highly congested tertiary and all‐carbon‐substituted quartenary