An improved method for the generation of imines and enamides. Application to the synthesis of 3-arylisoquinoline derivatives
作者:Nuria Sotomayor、Teresa Vicente、Esther Domínguez、Esther Lete、María-Jesús Villa
DOI:10.1016/s0040-4020(01)85079-1
日期:1994.2
and ethylenenamides 5 is achieved vía sodium cyanoborohydride reduction and acylation of the deoxybenzoin imines 2, respectively. A new methodology for the synthesis of 3-arylisoquinolinium salts by the Bischler-Napieralski reaction of 1,2-diarylethylenenamides and their transformation into 12-methyl substituted benzo[c]phenanthridines has been developed.
A New General Method for the Asymmetric Synthesis of 4-Alkyl-3-aryl-1,2,3,4-tetrahydroisoquinolines
作者:Jose L. Vicario、Dolores Badía、Esther Domínguez、Luisa Carrillo
DOI:10.1021/jo982008l
日期:1999.6.1
A highly enantioselective method for the synthesis of 4-alkyl substituted 1,2,3,4-tetrahydroisoquinolines is reported. The key step relies on the asymmetric synthesis of alpha-alkylarylacetic acids by alkylation of their corresponding amides employing (S,S)-(+)-pseudoephedrine as chiral inductor. Subsequent Friedel-Crafts acylation, stereocontrolled reductive amination and Pictet-Spengler cyclization