Alkylation of quinoline and isoquinoline in the presence of LiCl
作者:Yu Mi Chang、Young Sang Park、Seung Hwan Lee、Cheol Min Yoon
DOI:10.1016/j.tetlet.2004.10.032
日期:2004.11
EEDQ and EEDI generated in situ by the reaction of quinoline and isoquinoline with diethyl pyrocarbonate was treated with alkylating reagents having an activated carbon such as diethyl malonate, ethyl acetoacetate etc. in the presence of 0.5 equiv of LiCl in acetonitrile to provide the corresponding alkyl dihydroquinolines and alkyl dihydroisoquinolines in high yields.
CeCl<sub>3</sub>·7H<sub>2</sub>O/NaI-promoted Efficient Alkylation of Activated Quinoline and Isoquinoline
作者:J. S. Yadav、B. V. S. Reddy、K. Sathaiah、P. Narayana Reddy
DOI:10.1246/cl.2006.448
日期:2006.4
Active methylene compounds undergo smooth addition to quinolines and isoquinolinesactivated by chloroformate in the presence of CeCl 3 ·7H 2 O/NaI to afford 2-alkyl-1,2-dihydroquinoline and 1-alkyl-1,2-dihydroisoquinoline, respectively in excellent yields with high selectivity.