Iron-catalyzed C(sp<sup>3</sup>)–H functionalization of methyl azaarenes: a green approach to azaarene-substituted α- or β-hydroxy carboxylic derivatives and 2-alkenylazaarenes
作者:Danwei Pi、Kun Jiang、Haifeng Zhou、Yuebo Sui、Yasuhiro Uozumi、Kun Zou
DOI:10.1039/c4ra10939b
日期:——
An iron-catalyzed C(sp3)–H functionalization of methyl azaarenes with carbonyls to access the title compounds have been described.
aldehydes has been achieved through a novel synergistic organocatalysis. The HOAc‐ activated 2‐methylquiolines undergo a Michael addition to 1,3‐dimethylbarbituricacid‐activated aldehydes, followed by a retro‐Michael addition to release 1,3‐dimethylbarbituricacid and the target products. The transformation produced various 2‐alkenylquinolines with good to excellent yields and featured mild reaction conditions
Cobalt-Catalyzed Direct Alkenylation of 2-Methylquinolines with Aldehydes via C(sp3)–H Functionalization in Water
作者:Yong-Chua Teo、Zaini Jamal
DOI:10.1055/s-0034-1378355
日期:——
The direct C(sp(3))-H alkenylation of 2-methylquinolines with aldehydes as a simple methodology to afford 2-alkenylated quinolines is reported. In the presence of catalytic CoCl2 in water, the economically and ecologically sound transformation is proposed to proceed via the direct benzylic addition to the aldehyde followed by an elimination step to provide 2-alkenylated quinolines in good to excellent yield of up to 95%.
Microwave-assisted solvent-free synthesis of 2-styrylquinolines in the presence of zinc chloride
作者:V. M. Li、T. N. Gavrishova、M. F. Budyka
DOI:10.1134/s1070428012060139
日期:2012.6
An efficient solvent-free procedure has been developed for the synthesis of (E)-2-styrylquinoline derivatives under microwave irradiation in the presence of zinc chloride. The developed procedure is advantageous due to shorter reaction time and simpler workup.