Expanding the Scope of Arylsulfonylacetylenes as Alkynylating Reagents and Mechanistic Insights in the Formation of Csp<sup>2</sup>Csp and Csp<sup>3</sup>Csp Bonds from Organolithiums
作者:José Luis García Ruano、José Alemán、Leyre Marzo、Cuauhtémoc Alvarado、Mariola Tortosa、Sergio Díaz‐Tendero、Alberto Fraile
DOI:10.1002/chem.201200939
日期:2012.7.2
We describe the unexpected behavior of the arylsulfonylacetylenes, which suffer an “anti‐Michael” addition of organolithiums producing their alkynylation under very mild conditions. The broad scope, excellent yields, and simplicity of the experimental procedure are the main features of this methodology. A rational explanation of all these results can be achieved by theoretical calculations, which suggest