A novel and efficient synthesis of 5-substituted and 5,6-disubstituted 4-methylcoumarins using organocerium(III) reagents
作者:Kazuo Nagasawa、Hajime Kanbara、Kazuya Matsushita、Keiichi Ito
DOI:10.1016/s0040-4039(00)99031-2
日期:——
Addition of organocerium(III) reagent, Cl2CeCH2COOt-Bu, to the appropriate ortho-methoxymethoxyacetophenones followed by acid-treatment gives 5-substituted and 5,6-disubstituted 4-methylcoumarins in excellent yields.
将有机铈(III)试剂Cl 2 CeCH 2 COOt-Bu添加到适当的邻甲氧基甲氧基苯乙酮中,然后进行酸处理,以优异的产率得到5-取代的和5,6-二取代的4-甲基香豆素。