The synthesis and chemistry of functionalized furochromones.4.1 Addition of nitronate anions to 30bromochromone and 6-bromofurochromone. An expedient route to furo(3′,2′:6,7)-benzopyrano(2,3-d)-isoxazolones and chromono(2,3-d)isoxazolones.
作者:Ronald B. Gammill、Sharon A. Nash、Larry T. Bell、William Watt
DOI:10.1016/s0040-4039(00)91842-2
日期:1992.2
alkyl,aryl or carboalkoxy) substituted chromones and the corresponding 6,7-disubstituted furochromones. These compounds are efficiently converted to furo)3′,2′: 6,7)benzopyrano(2,3-d)isoxazoles and chromono(2,3-d)isoxazoles, respectively, with N,N-dimethylformamide dimethylacetal (DMF-DMA).