作者:Aman Bhalla、Paloth Venugopalan、Shamsher S. Bari
DOI:10.1002/ejoc.200600458
日期:2006.11
An operationally simple and efficient approach for the synthesis of novel spiro-β-lactams is described. The key reaction is a halogen-mediated intrasulfenyl cyclization of a cis-3-benzylthio-3-(prop-2-ynyloxy/-enyloxy)-β-lactam procured through a Lewis acid-mediated C-3-alkylation of the trans-3-benzylthio-3-chloro-β-lactam carbocation equivalent. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim
描述了一种合成新型螺-β-内酰胺的操作简单有效的方法。关键反应是 cis-3-benzylthio-3-(prop-2-ynyloxy/-enyloxy)-β-lactam 的卤素介导的硫内环化,通过路易斯酸介导的 C-3-烷基化反式- 3-苄硫基-3-氯-β-内酰胺碳正离子等价物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)