A Cu-catalyzed protocol has been developed for the rapid construction of a wide spectrum of structurally interesting spiropyrroline skeletons. This method utilizes readily accessible ketoximes and alkenes as the starting materials and exhibits broad substrate scope and good functional group compatibility. Furthermore, the reaction can be applied for the late stage modification of bioactive pregnenolone derivatives. The mechanistic investigation suggests that the reactions proceed through a radical process.
Substituent effect of 4-and 5-substituted 2-aryl-methylideneindane-1,3-diones on formation of 5-oxo-1H-4,5-dihydroindeno[1,2-b]pyridines
作者:D. Muceniece、J. Popelis、V. Lūsis
DOI:10.1007/s10593-008-0014-8
日期:2008.1
The ratio of dihydroindenopyridine regioisomers formed from ethyl beta-amino-crotonate and 4- or 5-monosubstituted 2-arylideneindane-1,3-dione depends on the total electronic and steric effects of the indanedione substituents.
Direct difluoromethylation of 2-arylidenindan-1,3‑dione by photoredox-catalyzed radical addition