SmI2-promoted intra- and intermolecular C–C bond formation with chiral N-acyl oxazolidinones
作者:Rolf H. Taaning、Laura Thim、Jacob Karaffa、Araceli G. Campaña、Anna-Mette Hansen、Troels Skrydstrup
DOI:10.1016/j.tet.2008.09.044
日期:2008.12
The suitability of chiral oxazolidinones in the SmI2-mediated C–C bond generation between the imide functionality of an N-acyloxazolidinone unit and an olefinic radical acceptor, in both inter- and intramolecular reactions, was investigated. It was shown that the products from an Evans asymmetric alkylation can undergo direct carbon–carbon bond formation with an acrylamide providing chiral acyclic
Toward a Chemical Constructor: A Lego-Like Approach for Formal α-Alkylation of Cyclic Ketones
作者:Andriy I. Frolov、Yaroslav O. Chuchvera、Eugeniy N. Ostapchuk、Tetiana V. Druzhenko、Dmytro M. Volochnyuk、Serhiy V. Ryabukhin
DOI:10.1021/acs.joc.3c02628
日期:2024.6.7
generated in the α-position of various ketones viasynthesis of enaminone (step 1) and treatment with organomagnesium (step 2) with subsequent catalytic hydrogenation (step 3, 1° alkyl) or organocopperreagents (step 4, 2° alkyl). Tolerance toward ester, Boc-protected amine, and α-fluoro-substituted ketone moieties was demonstrated. The suitability of the method for late-stage natural product modification