Recent Developments in the Chemistry of Heteroaromatic N-Oxides
作者:Liming Zhang、Youliang Wang
DOI:10.1055/s-0034-1379884
日期:——
ortho-Alkyl C–H Functionalization 4.3.3 N-Oxide Directed Remote C–H Functionalization 4.4 1,3-Dipolar Cycloaddition 5 Conclusion and Outlook Selected developments in the chemistry of heteroaromatic N-oxides since 2001 are presented in this review. The use of these N-oxides, both in late-transition-metal-catalyzed oxidations of carbon–carbon triple bonds and in regioselective C–H functionalizations of the heteroarene
Gold-Catalyzed Oxidative Cyclizations of<i>cis</i>-3-En-1-ynes To Form Cyclopentenone Derivatives
作者:Sabyasachi Bhunia、Satish Ghorpade、Deepak B. Huple、Rai-Shung Liu
DOI:10.1002/anie.201108027
日期:2012.3.19
Golden tendencies: The title reaction for synthesizing cyclopentenonederivatives utilizes a gold complex and 8‐methylquinoline oxide as the catalyst system (see scheme; IPr=1,3‐bis(diisopropylphenyl)imidazol‐2‐ylidene). Such products are not attainable using diazocarbonyl reagents, as the gold carbenoids tend to react with CH bonds.