An efficient synthesis of novel chromeno-2,6,9-trioxabicyclo-[3.3.1]nonadienes (CTOBN) scaffolds was achieved by mild base mediated reaction of 4-chloro-3-formylcoumarin and o-hydroxyacetophenones. The structure of the product was confirmed by X-ray analysis and the proposed mechanism was validated computationally at B3LYP/6-31G(d) level.
通过4-
氯-3-甲酰基
香豆素和邻羟基
苯乙酮的轻度碱介导反应,可以有效合成新型的chromeno-2,6,9-三恶双环-[3.3.1]壬二烯(CTOBN)支架。通过X射线分析确定了产品的结构,并在B3LYP / 6-31G(d)
水平上对所提出的机理进行了计算验证。