Synthesis of Polysubstituted Isoquinolines through Cross-Coupling Reactions with α-Alkoxytosylhydrazones
作者:Lucía Florentino、Fernando Aznar、Carlos Valdés
DOI:10.1021/ol300810p
日期:2012.5.4
A Pd-catalyzed cross-couplingreaction of α-alkoxytosylhydrazones with sulfonates derived from salicyl aldehydes gives rise to protected 1,5-dicarbonyl compounds. Treatment with ammonium hydroxide readily transforms these alkenes into isoquinolines with diverse substitution patterns at positions 3 and 4. In a similar way, the employment of o-cyanononaflates in the coupling reaction, followed by treatment