A Polymer-Assisted Solution-Phase Strategy for the Synthesis of Fused [2,1-<i>b</i>]Quinazolinones and the Preparation of Optically Active Vasicinone
作者:Ahmed Kamal、V. Devaiah、N. Shankaraiah、K. Reddy
DOI:10.1055/s-2006-951482
日期:2006.9
An efficient preparation of fused [2,1-b]quinazolinones has been developed utilizing polymer-supported reagents. (±)-Vasicinone was converted into its dione by oxidation with poly (4-vinylpyridiniumdichromate). An efficient method has been developed for the synthesis of (d)- and (l)-vasicinone via asymmetric reduction of pyrrolo[2,l-b]quinazoline-3,9-dione by employing NaBH 4 /Me 3 SiCl as the reducing
利用聚合物支持的试剂开发了一种有效制备稠合 [2,1-b] 喹唑啉酮的方法。(±)-Vasicinone 通过用聚(4-乙烯基吡啶重铬酸盐)氧化转化为二酮。已经开发了一种通过使用 NaBH 4 /Me 3 SiCl 作为还原剂和 pyrrolo[2,lb]quinazoline-3,9-dione 的不对称还原来合成 (d)- 和 (l)-vasicinone 的有效方法。聚合物负载的手性磺酰胺作为催化剂。