A new approach for the regioselective functionalization of the C-3-position of quinolines is described. The method utilizes heteroatom guided regioselective C-3 palladation followed by arylation via transmetalation with aryl boronic acids to yield 3-aryl-N-acyl-1,2-dihydroquinolines. In a one-pot sequence, N-deacylation followed by aromatization leads to important 3-arylquinolines in good yields.
1-Acyl-2-alkyl-3,4-epoxy-1,2,3,4-tetrahydroquinolines — Synthesis and Reactions with N-Nucleophiles
作者:Martin Kratzel、Romana Hiessböck
DOI:10.3987/com-94-6677
日期:——
Epoxide opening of the title compounds (6) with primary or secondary amines using lithium perchlorate as catalyst gave 1,2,3,4-tetrahydroquinolines with stereochemically well defined substitution pattern in the piperidine moiety (7,8). By-products (9,10), formed by acyl migration, were observed.