Inversion of Stereochemistry in the Co<sub>2</sub>(CO)<sub>8</sub>-Catalyzed Carbonylation of Aziridines to β-Lactams. The First Synthesis of Highly Strained <i>trans</i>-Bicyclic β-Lactams
作者:Marcelo E. Piotti、Howard Alper
DOI:10.1021/ja9531586
日期:1996.1.1
dicobalt octacarbonyl under CO pressure. The active catalyst, cobalttetracarbonyl anion, induces nucleophilic ring opening of the heterocycle, resulting in inversion of configuration. The regio- and stereospecificity of this reaction resulted in the synthesis of the first highly strained trans-7-azabicyclo[4-2-0]octan-8-one derivatives.
β-内酰胺是通过在 CO 压力下由八羰基二钴催化的氮丙啶羰基化扩环合成的。活性催化剂四羰基钴阴离子诱导杂环亲核开环,导致构型反转。该反应的区域和立体特异性导致第一个高度紧张的 trans-7-azabicyclo[4-2-0]octan-8-one 衍生物的合成。
Photoinduced electron-transfer reactions of 1-substituted 2,3-diphenylaziridines with 9,10-dicyanoanthracene and chloranil