E. Schmidt, N. V. Zorina, E. V. Skital'tseva
Jul 20, 2011
Citations
0
Influential Citations
13
Citations
Journal
Tetrahedron Letters
Abstract
Abstract Cyclohexanones react with phenylacetylene in a KOH/DMSO suspension (80 °C, 1 h) to give unexpectedly phenylmethylidene dispirocyclic ketals, 15-[( Z )-phenylmethylidene]-7,14-dioxadispiro[5.1.5.2]pentadecanes, in 16–22% yields (along with the anticipated β,γ- and α,β-ethylenic ketones).