Copper-Mediated Difluoromethylation of Aryl and Vinyl Iodides
作者:Patrick S. Fier、John F. Hartwig
DOI:10.1021/ja301013h
日期:2012.3.28
straightforward method for the cross-coupling of aryl and vinyliodides with a difluoromethyl group generated from readily available reagents to form difluoromethylarenes and difluoromethyl-substituted alkenes. The reaction of electron-neutral, electron-rich, and sterically hindered aryl and vinyliodides with the combination of CuI, CsF and TMSCF(2)H leads to the formation of difluoromethyl-substituted
[EN] DIFLUOROMETHYLATION OF ARYL AND VINYL IODIDES<br/>[FR] DIFLUOROMÉTHYLATION D'IODURES D'ARYLE ET DE VINYLE
申请人:UNIV CALIFORNIA
公开号:WO2013134296A1
公开(公告)日:2013-09-12
Selectively fluorinated molecules are important as materials, pharmaceuticals, and agrochemicals, but their synthesis by simple, mild, laboratory methods is challenging. We report a straightforward method for the cross-coupling of a difluoromethyl group with readily available reagents to form difluoromethylarenes. The reaction of electron-neutral, electronrich, and sterically hindered aryl and vinyl iodides with the combination of Cul, CsF and TMSCF2H leads to the formation of difluoromethylarenes in high yield with good functional group compatibility. This transformation is surprising, in part, because of the prior observation of the instability of CuCF2H.
Selectively fluorinated molecules are important as materials, pharmaceuticals, and agrochemicals, but their synthesis by simple, mild, laboratory methods is challenging. We report a straightforward method for the cross-coupling of a difluoromethyl group with readily available reagents to form difluoromethylarenes. The reaction of electron-neutral, electronrich, and sterically hindered aryl and vinyl iodides with the combination of Cul, CsF and TMSCF
2
H leads to the formation of difluoromethylarenes in high yield with good functional group compatibility. This transformation is surprising, in part, because of the prior observation of the instability of CuCF
2
H.
The present disclosure provides phosphatidylinositol 3-kinase (PI3K) inhibitors of formula (I),
or pharmaceutically acceptable salts thereof, in which n, m, R
1
, R
2
, and R
3
are as defined herein. These compounds are useful for treatment of conditions mediated by one or more PI3K isoforms, such as PI3Kδ. The present disclosure further provides pharmaceutical compositions that include a compound of formula (I), or pharmaceutically acceptable salts thereof, and methods of using these compounds and compositions to treat conditions mediated by one or more PI3K isoforms, such as PI3Kδ.
A Difluoromethylation Reagent: Access to Difluoromethyl Arenes through Palladium Catalysis
作者:Xia Chen、Yining Liu、Sheng Zhang、Yang Li、Xiao-Yu Zhou、Xiaoqiang Yu、Xiujuan Feng、Yoshinori Yamamoto、Ming Bao
DOI:10.1021/acs.orglett.4c02161
日期:2024.7.19
A new radical difluoromethylation was developed by using inexpensive and readily available difluoroacetic anhydride and N-phenyl-4-methylbenzenesulfonamide for the first time. The reaction of arylboronic acids with the new difluoromethylation reagent, N-phenyl-N-tosyldifluoroacetamide, proceeded smoothly in the presence of palladium catalyst to provide difluoromethylarenes in satisfactory to excellent