Ring Expansion to 8-Membered Silacycles via Formal Cross-Dimerization of 5-Membered Palladacycles with Silacyclobutanes
2021
Investigations of the sila-8-membered
ring fused biaryls are of important significance for the discovery of new drug lead compounds. However, such
compounds are still unknown due to the synthetic challenge. Herein we describe the chemo- and regio-selective cross-dimerization of 5-membered palladacycles with silacyclobutanes enabled by Pd-catalytic
conditions, which constitutes an expedient ring
expansion route to the sila-8-membered ring fused biaryl skeletons.
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