Regiospecific Synthesis of Unsymmetrical 2,3-Diarylquinones via Stepwise Pd(0)-Catalyzed Couplings of Arylstannanes to Doubly Activated Quinone Equivalents
作者:Kenneth W. Stagliano、Helena C. Malinakova
DOI:10.1016/s0040-4039(97)01532-3
日期:1997.9
Coupling of aryltaannanes to 2-phenyliodonio-1,4-naphthoquinone-3-oxide in the presence of a tetrakis(triphenylphosphine)palladium(0)-cuprous iodide catalyst yields 3-aryl-2-hydroxy-1,4-naphthoquinones which are converted to the corresponding 3-aryl-2-trifluoromethanesulfonyloxy-1,4-naphthoquinone and coupled to a different arylstannane to yield unsymmetrical 2,3-diaryl-1,4-naphthoquinones in good
在四(三苯基膦)钯(0)-碘化亚铜催化剂存在下,芳基金刚烷与2-苯基碘代-1,4-萘醌-3-氧化物的偶合反应生成3-芳基-2-羟基-1,4-萘醌转化为相应的3-芳基-2-三氟甲磺酰氧基-1,4-萘醌,并偶联到不同的芳基锡烷上,以良好的收率得到不对称的2,3-二芳基-1,4-萘醌。©1997爱思唯尔科学有限公司。