Copper(I)-Catalyzed Cascade Synthesis of 2-Substituted 1,3-Benzothiazoles: Direct Access to Benzothiazolones
作者:Siva Murru、Pravat Mondal、Ramesh Yella、Bhisma K. Patel
DOI:10.1002/ejoc.200900711
日期:2009.11
An efficient cascade process for the preparation of 2-substituted 1,3-benzothiazoles directly from 2-haloaryl isothiocyanates and O or S nucleophiles by a Cu-catalyzed, intramolecular, C–S bond formation has been developed. This cascade method is viable for the efficient syntheses of both O- and S-substituted 1,3-benzothiazoles. Furthermore, 1,3-benzothiazol-2(3H)-ones having an alkyl group allow easy
已经开发出一种通过 Cu 催化的分子内 C-S 键形成直接从 2-卤代芳基异硫氰酸酯和 O 或 S 亲核试剂制备 2-取代 1,3-苯并噻唑的高效级联工艺。这种级联方法对于 O-和 S-取代的 1,3-苯并噻唑的有效合成是可行的。此外,具有烷基的 1,3-苯并噻唑-2(3H)-酮易于获得 1,3-苯并噻唑酮。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)