Allyl aryl sulfones 2 react with aryl nitrocompounds 1 in a DBU/MgCl2 system giving the 4-arylsulfonyl quinolines 3. Some mechanisticaspects of the reaction are discussed. Application of this reaction to the formal total synthesis of the natural product (−)Eupolauramine is described.
Silane-mediated direct condensation of nitroarenes with cinnamyl-type sulfones. The way to 2-aryl-4-X-quinolines and their hetero analogs
作者:Zbigniew Wróbel
DOI:10.1016/s0040-4020(98)00023-4
日期:1998.3
DBU/silane mediated double condensation of nitroarenes with cinnamyl-type sulfones proceeds smoothly to yield 2-aryl-4-arylsulfonyl quinolines and their hetero analogs. Arylsulfonyl group can be easily replaced by different nucleophiles. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
New concept in synthesis of fused six-membered nitrogen heterocycles. Silane-Mediated direct condensation of nitroarenes with allylic carbanions
作者:Zbigniew Wróbel
DOI:10.1016/s0040-4039(97)01057-5
日期:1997.7
Six-membered nitrogen containing ring was constructed via double condensation of allylic CH-acids with nitoarenes. The reactions proceed with high regioselectivity. Mechanism of the transformation was discussed.