A quick and advantageous synthesis of 2H-1-benzopyran-2-ones unsubstituted on the pyranic nucleus.

[摘要]：The synthesis of 2H-1-benzopyran-2-ones (coumarins) unsubstituted on the pyranic nucleus was realized by condensation of malate and phenols under mild conditions. A short reaction time, improved yields, good purity of the products, and an easy clean exptl. protocol are the advantages of this procedure.

[全文传递流程]：

一般上传文献全文的时限在1个工作日内