Synthesis and Properties of
<scp>
CF
<sub>3</sub>
</scp>
(
<scp>
OCF
<sub>3</sub>
</scp>
)
<scp>CH‐Substituted</scp>
Arenes and Alkenes
<sup>†</sup>
作者:Wen‐Qi Xu、Xiu‐Hua Xu、Feng‐Ling Qing
DOI:10.1002/cjoc.202000062
日期:2020.8
developed to access novel CF3(OCF3)CH‐containing compounds. Deprotonation of CF3(OCF3)CH‐substitutedarenes afforded synthetically useful CF3O‐substituted gem ‐difluoroalkenes. Furthermore, evaluation of the lipophilicities (log P ) indicated that CH(OCF3)CF3 is more lipophilic than the common fluorinated motifs such as CF3, OCF3, and SCF3, thus rendering the CH(OCF3)CF3 motif appealing in drug discovery
(2) with a slope of unity over a wide range (108 in reactivity) of substituents from p-MeO to unsubstituted derivatives. The substituent effect on the solvolysis of 1 should be closer to that on the solvolysis of 2, rather than to the σ+ substituent effect. The ρ value for this system was estimated to be identical to the value of −6.3 assigned for 2, and the r value in the LArSR correlation to be comparable
phthalimido trifluoroethanol with aryl bromides to furnish α-aryl-α-trifluoromethyl alcohols is reported. This reaction proceeds via a photoinduced charge transfer of an electrondonor–acceptorcomplex between Hantzsch ester and phthalimido trifluoroethanol, followed by 1,2-hydrogen atom transfer, to generate the α-hydroxytrifluoroethyl radical for the cross-coupling of aryl bromides. No exogenous photocatalysts
Cross‐Electrophile Coupling between Two Different Tosylates Enabled by Nickel/Palladium Cooperative Catalysis
作者:Ruiling Qu、Jinyu Zhang、Zhong Lian
DOI:10.1002/ejoc.202300874
日期:2023.10.21
A cross-electrophile coupling reaction of gem-difluoroalkenyl tosylate with α-CF3 benzyl tosylate is presented. This protocol is the first example of cross-electrophile coupling between twodifferent tosylates by Pd/Ni cooperative catalysis.