Novel reductive olefination mediated by Ti(O-i-Pr)4 and Ph3P. One-pot synthesis of trifluoromethylated trans-allylic alcohols
作者:Yanchang Shen、Yuming Zhang、Yuefen Zhou
DOI:10.1039/a806271d
日期:——
A novel reductive olefination mediated by Ti(O-i-Pr)4 and Ph3P and its application to the ‘one-pot’ synthesis of perfluoroalkylated trans-allylic alcohols are described.
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
Highly regio- and stereoselective palladium-catalyzed ortho-vinylation of β-naphthols (2) has been reported using easily accessible CF3-allyl carbonates (1). The regioselective nucleophilic γ-attack of the CF3–π-allyl–Pd-intermediate is the key to furnish (Z)-CF3-vinylnaphthols (3) in good yields. Furthermore, we achieved a one-pot synthesis of CF3-naphtho[2,1-b]furans (4) through an uninterrupted