we report the study of the thermally promoted reaction of 3-diazotetramic acids with imines as a rapid route to a novel spiro heterocyclic scaffold, spiro bis-β-lactams (2,6-diazaspiro[3.3]heptane-1,5-diones). The transformation proceeds via metal-free microwave-assisted Wolff rearrangement of the diazo reagent followed by Staudinger [2+2] cycloaddition of the heterocyclic ketenes with Shiff bases
                                    在此,我们报告了 3-重氮
四酸与
亚胺的热促进反应的研究,作为一种快速途径制备新型螺杂环支架,螺双-β-内酰胺(
2,6-二氮杂螺[3.3]庚烷-1,5-)二
酮类)。该转化通过重
氮试剂的无
金属微波辅助沃尔夫重排,然后杂环
乙烯酮与希夫碱的施陶丁格[2+2]环加成进行。该方法能够以高产率制备非对映体纯的螺双-β-内酰胺,并为探索用于药物设计的特殊β-内酰胺核心的新版本提供了途径。