6-Nitro-1,2,3,4-tetrahydroquinoline-4-carboxylic Esters and 7-Nitro-3,4-dihydroquinoxaline- 1(2<i>H</i>)-carboxylic Esters by a Tandem Reductive Amination-S<sub>N</sub>Ar Reaction
作者:Richard A. Bunce、James E. Schammerhorn
DOI:10.1080/00304940903517506
日期:2010.2.2
The tandemreductiveamination-SNArreaction sequence has recently been reported for the efficient synthesis of 1,2,3,4-tetrahydroquinolines.1 As part of our effort to develop new routes to biologically active heterocyclic compounds having diverse substitution, we wished to extend this methodology to the synthesis of tetrahydroquinolines and tetrahydroquinoxalines bearing carboxyl groups on the saturated