Regiospecific synthesis of 3-(2,6-dihydroxyphenyl)phthalides: application to the synthesis of isopestacin and cryphonectric acid
作者:Dipakranjan Mal、Pallab Pahari、Saroj Ranjan De
DOI:10.1016/j.tet.2007.08.048
日期:2007.11
DBU catalyzed condensation of phthalaldehydic acids and 1,3-diketones has been developed to be a general method for the synthesis of 3-substituted phthalides. This method, in combination with mercuric acetate mediated oxidative aromatization has been utilized for the regiospecific synthesis of isopestacin (9) and cryphonectric acid (10).
已经开发出DBU催化的邻苯二甲酸和1,3-二酮的缩合反应,是合成3-取代的邻苯二甲酸酯的通用方法。该方法与乙酸汞介导的氧化芳构化相结合,已被用于异雌霉素(9)和冷柠檬酸(10)的区域特异性合成。