Three-component condensations with 5-amino-4-phenylpyrazole
作者:D. V. Kryl’skii、Kh. S. Shikhaliev、A. S. Chuvashlev
DOI:10.1134/s107042801003019x
日期:2010.3
3-methyl(or methoxymethyl)-4-phenyl-1H-pyrazol-5-amine with triethyl orthoformate and carbonyl compounds or nitriles containing an activated methylene group (cyclohexane-1,3-diones, acetoacetanilides, benzoylacetone, ethyl cyanoacetate, malononitrile, 1H-benzimidazol-2-ylacetonitrile) gave substituted pyrazolopyrimidines and pyrazoloquinazolines.
Visible-Light Mediated <i>ortho</i>-Trifluoromethylation of Aniline Derivatives
作者:Chao Tian、Qiyue Wang、Xueqi Wang、Guanghui An、Guangming Li
DOI:10.1021/acs.joc.9b01987
日期:2019.11.1
trifluoromethylation of anilinederivatives by using a low-cost and stable Langlois reagent (CF3SO2Na) as the "CF3" source has been developed. In contrast to previous reports, this strategy allowed access to elusive trifluoromethyl lactams. Furthermore, mechanism experiments revealed that a copper/photoredox dual catalytic mechanism enabled general trifluoromethylation of anilinederivatives.