Synthesis of gigantic macrocyclic polyketones through catalytic cyclometalation of cycloalkynes
摘要:
A new effective method for designing unique gigantic polyfunctional macrocarbocycles from cyclic acetylenes and Grignard reagents through the catalytic cyclometalation reaction in the presence of transition metal based complexes has been elaborated. (C) 2010 Elsevier Ltd. All rights reserved.
Cyclomagnesation of cycloalkynes with the use of RMgR’ catalyzed by zirconium complexes
摘要:
The intermolecular cyclomagnesation of cycloalkynes and joint cyclomagnesation of cycloalkynes and disubstituted acetylenes was carried out by treating with RMgR' (R, R' = Et, Bu, H1g) in the presence of Cp2ZrCl2 as a catalyst. As a result new unsaturated bi-and tricyclic organomagnesium compounds were obtained in high yields.