Suzuki-Miyaura Reactions of 2,7-Dichloro-1,8-naphthyridine
摘要:
2,7-Diaryl- and 2,7-dialkenyl-1,8-naphthyridines were prepared in high yields by Suzuki-Miyaura reactions of 2,7-dichloro-1,8-naphthyridines. While most of the products proved to be not or only weakly fluorescent, we observed a strong fluorescence in case of 2,7-bis(4-methoxyphenyl)-1,8-naphthyridine containing two electron-donating aryl groups.
Ruthenium-Catalyzed Enantioselective Hydrogenation of 1,8-Naphthyridine Derivatives
作者:Wenpeng Ma、Fei Chen、Youran Liu、Yan-Mei He、Qing-Hua Fan
DOI:10.1021/acs.orglett.6b01186
日期:2016.6.3
The first asymmetric hydrogenation of 2,7-disubstituted 1,8-naphthyridines catalyzed by chiral cationic ruthenium diamine complexes has been developed. A wide range of 1,8-naphthyridine derivatives were effectively hydrogenated to give 1,2,3,4-tetrahydro-1,8-naphthyridines with up to 99% ee and full conversions. The method provides a practical and facile approach to the preparation of valuable chiral