Nucleophilic Desulfinylation of α-Fluoro-β-(alkoxy and silyloxy) Sulfoxides.Effects of the β-Oxy Substituents on Protonation, 1,2-Hydrogen Migration, and Nucleophile Addition to the Fluorocarbenoid Centers
作者:Hidemitsu Uno、Katsuji Sakamoto、Hitomi Suzuki
DOI:10.1246/bcsj.65.218
日期:1992.1
resulted in the formation of a fluorostilbene derivative, a fluoro enolsilylether and small amounts of 4-(fluoroacetyl)biphenyl, while a similar reaction of 2-methoxymethoxy analog mainly led to the fluorostilbene derivatives and a simple desulfinylation product. In contrast, both sulfoxides reacted with PhLi to give chlorofluoro compounds and fluoro enolethers. In these reactions, the stability
Stereoselective Rhodium(I)-Catalyzed C–F Bond Arylation of Tri- and Tetrasubstituted <i>gem</i>-Difluoroalkenes with Boronic Acids
作者:Hao Tan、Yuwei Zong、Yihan Tang、Gavin Chit Tsui
DOI:10.1021/acs.orglett.3c00108
日期:2023.2.10
We herein describe a highly diastereoselective rhodium(I)-catalyzed C–F bond functionalization of gem-difluoroalkenes with arylboronic acids. In contrast to previously developed Pd(II)- and Pd(0)-catalyzed methods, the Rh(I)/BINAP catalytic system enabled the C–F bond arylation of both trisubstituted β,β-difluorostyrenes and tetrasubstituted β,β-difluoroacrylates in >99:1 dr toward the synthesis of