Synthesis of some novel imidate derivatives of thiophene and furan: Investigations of their metallation properties and some synthetic applications
作者:Richard A. Barcock、Derek J. Chadwick、Richard C. Storr、Lance S. Fuller、John H. Young
DOI:10.1016/s0040-4020(01)86710-7
日期:1994.4
solvents, and reaction conditions revealed almost exclusive C5-lithiation. This regioselectivity is in contrast to the C3-lithiation reported for the oxazolino functionality (a cyclic imidate). The syntheticutility of the C5-lithiated intermediate of methyl N-methyl-thiophene-2-carboximidate with various electrophiles is demonstrated. C3-Lithiation has been effected in the case of methyl N-methylthi
Visible-light-induced dual catalysis for <i>N</i>-α C(sp<sup>3</sup>)–H amination and alkenylation of <i>N</i>-alkyl benzamides
作者:Long-Hai Li、Xin-Tao Gu、Min Shi、Yin Wei
DOI:10.1039/d2sc03385b
日期:——
functionalization with regard to secondary N-alkylamides. More importantly, new reaction models in photoredox catalysis have been established. Based on corresponding experiments and density functional theory (DFT) calculations on the critical reaction steps combined with information reported previously, we proposed a synergistic photo- and organocatalytic reaction process for the C(sp3)–H bond functionalization and