作者:Kovela, Satish、Karad, Somnath、Tatipudi, V. V. Ganesh、Arumugam, Karthikeyan、Somwanshi, Atul Vijay、Muthukumar、Mathur, Arvind、Tester, Richland
DOI:10.1039/d4ob00885e
日期:——
The synthesis of diversely substituted quinazoline-2,4(1H,3H)-diones by cyclization of tert-butyl (2-cyanoaryl)carbamates using readily accessible Boc protected o-amino nitriles is reported. The reaction proceeds smoothly at room temperature using 1 equiv. of H2O2 under basic conditions. This reaction is compatible with a variety of aromatic/heteroaromatic substrates with different functional groups
据报道,通过使用易于获得的 Boc 保护的邻氨基腈环化(2-氰基芳基)氨基甲酸叔丁酯来合成不同取代的喹唑啉-2,4(1 H ,3 H )-二酮。使用1当量,反应在室温下顺利进行。碱性条件下的H 2 O 2 。该反应与各种具有不同官能团的芳香族/杂芳香族底物相容。该策略可用于简化合成goshuyuamide II和从花椒中分离出的生物碱,收率良好。该方法还应用于喹唑啉-2,4(1 H ,3 H )-二酮的合成,该二酮是重要药用化合物的前体:阿夫唑嗪、特拉唑嗪、哌唑嗪、IAAP、多沙唑嗪、FK 366 (zenarestat) 和 KF31327。