作者:Chun Li、Brendan Twamley、Nicholas R. Natale
DOI:10.1002/jhet.5570450132
日期:2008.1
Lateral metalation and oxidation of 3-(9′-anthryl)-isoxazoles (1), using Davis' oxaziridine (6), produced the desired hydroxylation (2), along with sulfonamide adduct (3), and in the case of the use of butyl lithium as base, butyl addition products (4) and (5). Structures of isoxazole sulfonamides (3a) and (5a), were obtained as the SR/RS-diastereomer, however, studies indicate that this is a consequence
使用Davis'恶唑烷(6)对3-(9'-蒽基)-异恶唑(1)进行侧向金属化和氧化反应,可产生所需的羟基化反应(2),以及磺酰胺加合物(3),并且在使用时丁基锂作为碱,丁基加成产物(4)和(5)。作为SR / RS-非对映异构体,获得了异恶唑磺酰胺(3a)和(5a)的结构,但是研究表明这是结晶过程的结果。用异恶唑(8)进行的金属化研究表明,可以干净地进行羟基化(9),从而最大程度地减少(10)的形成。),使用樟脑磺酰基恶唑烷(7)作为亲电试剂。