Single C(sp<sup>3</sup>)–F Bond Activation in a CF<sub>3</sub> Group: <i>Ipso</i>-Defluorooxylation of (Trifluoromethyl)alkenes with Oximes
作者:Hao Zeng、Chuanle Zhu、Huanfeng Jiang
DOI:10.1021/acs.orglett.9b00074
日期:2019.2.15
This exclusively regioselective ipso-defluorooxylation of (trifluoromethyl)alkenes with oximes affords various attractive O-(1,1-difluoroallyl)oxime ethers efficiently via a chemoselective singleC(sp3)–F bond activation in the CF3 group. Primary mechanism studies indicated an anionic SN2-type substitution pathway might be involved in this transformation.
报道了(三氟甲基)烯烃的第一个脱氟ipso-官能化反应。这个专门区域选择性本位的(三氟甲基)与肟,得到各种吸引力烯烃-defluorooxylation ø -通过化学选择性单C(SP高效地(1,1-二氟烯丙基)肟醚3)-F键活化的CF中3组。主要机理研究表明,阴离子S N 2型取代途径可能参与了该转化过程。
Triple<i>ipso</i>-defluoroetherification of (trifluoromethyl)alkenes with fluoroalkylated alcohols: access to fluoroalkylated orthoesters<i>via</i>C(sp<sup>3</sup>)–F bond cleavage
作者:Jia Nie、Huanfeng Jiang、Chuanle Zhu
DOI:10.1039/d3cc01760e
日期:——
The triple ipso-defluoroetherification of (trifluoromethyl)alkenes with fluoroalkylated alcohols by C(sp3)–F bondcleavage is reported, delivering various fluoroalkylated orthoesters in high yields. This reaction is transition-metal free and gram-scalable, features mild reaction conditions, and tolerates diverse functional groups.
Reactions en milieu heterogene solide-liquide faiblement hydrate II-la reaction de wittig dans les systemes carbonates alcalins/solvant organique aprotique
作者:Yves Le Bigot、Michel Delmas、Antoine Gaset
DOI:10.1016/s0040-4020(01)87435-4
日期:1986.1
Sohar, P.; Schneider, G.; Abraham, G., Acta Chimica Academiae Scientiarum Hungaricae, 1980, vol. <3> 105, p. 201 - 208
作者:Sohar, P.、Schneider, G.、Abraham, G.、Horvath, T.