Iridium-Catalyzed <i>ortho</i>-C(sp<sup>2</sup>)–H Amidation of Benzaldehydes with Organic Azides
作者:Delong Mu、Xinmou Wang、Gong Chen、Gang He
DOI:10.1021/acs.joc.7b00531
日期:2017.4.21
ortho-C(sp2)–H amidation reaction of benzaldehydes with organic azides has been developed. A catalytic amount of 3,5-di(trifluoromethyl)aniline was used to promote the Ir-catalyzed directed C–H amination reaction through a transient aldimine intermediate. This reaction tolerates a broad scope of benzaldehyde substrates and works well with a range of aryl- and alkylsulfonyl azides.
Ruthenium-Catalyzed Ortho C(sp2)–H Amidation of Benzaldehydes with Organic Azides
作者:Omer Rasheed
DOI:10.1055/s-0036-1591765
日期:2018.5
Abstract A ruthenium-catalyzed functionalization of benzaldehyde substrate with organic azides promoted by various transient directing groups has been developed. In this approach, C–H amination is achieved via a transient aldimine intermediate in good to excellent yields. A ruthenium-catalyzed functionalization of benzaldehyde substrate with organic azides promoted by various transient directing groups
Iridium-Catalyzed Diastereo- and Enantioselective [4 + 1] Cycloaddition of Hydroxyallyl Anilines with Sulfoxonium Ylides
作者:Chunlan He、Yaping Tang、Shengbiao Tang、Jiangtao Sun
DOI:10.1021/acs.orglett.3c01217
日期:2023.6.30
We present here an iridium-catalyzed diastereo- and enantioselective [4 + 1] cycloaddition reaction of hydroxyallyl anilines with sulfoxonium ylides undermild reaction conditions, leading to 3-vinyl indolines in moderate to good yields with excellent enantioselectivities. Control experiments disclosed a plausible reaction mechanism.
Iridium-Catalyzed Direct ortho-C–H Amidation of Benzaldehydes through <i>N</i>-Sulfonyl Imines as Mask
作者:Yudong Li、Yadong Feng、Linhua Xu、Lianhui Wang、Xiuling Cui
DOI:10.1021/acs.orglett.6b02406
日期:2016.10.7
Ir-catalyzed direct C-H sulfamiclation of benzaldehydes has been achieved. A series of ortho-amided benzaldehydes were obtained in up to 95% yields for 21 examples with excellent regioselectivity and broad functional group tolerance. This transformation could proceed smoothly with low catalyst loading under external-oxidant-, acid-, or base-free conditions. Molecular nitrogen was released as the sole byproduct, providing an environmentally benign sulfamidation process.