Type II Anion Relay Chemistry: Exploiting Bifunctional Weinreb Amide Linchpins for the One-Pot Synthesis of Differentiated 1,3-Diketones, Pyrans, and Spiroketals
作者:Mark Farrell、Bruno Melillo、Amos B. Smith
DOI:10.1002/anie.201509342
日期:2016.1.4
effective bifunctionallinchpins for type II anionrelaychemistry (ARC) has been achieved. The mechanistically novel negative‐charge migration that comprises the Brook rearrangement is now initiated by a stabilized tetrahedral intermediate, which is generated by nucleophilic addition to a Weinreb amide, rather than by a simple oxyanion that is generated from an epoxide. As a result, the linchpin preserves
Connecting the dots: using sunlight to drive electrochemical oxidations
作者:Laura A. Anderson、Alison Redden、Kevin D. Moeller
DOI:10.1039/c1gc15207f
日期:——
Inexpensive, readily available photovoltaic cells have been used to conduct electrochemical oxidation reactions. In this way, the energy efficiency of sunlight-driven reactions can be combined with the versatility of electrochemistry to create new, sustainable methods for conducting oxidation reactions.
Stereoselective construction of steroidal trans-hydrindanes via intramolecular ester enolate alkylation[1,2]
作者:Kim Deukjoon、Kim Sanghee、Jeong Lee Jae、Sung Kim Hak
DOI:10.1016/s0040-4039(00)94490-3
日期:1990.1
Steroidal trans-hydrindanone 6 was stereoselectively synthesized from lactol 1 in nine steps in 27% overall yield via intramolecular ester enolate alkylation methodology.
Anodic Coupling Reactions: Exploring the Generality of Curtin−Hammett Controlled Reactions
作者:Alison Redden、Kevin D. Moeller
DOI:10.1021/ol200182f
日期:2011.4.1
Intramolecular anodic olefin coupling reactions can be compatible with the presence of dithioketal protecting groups even though the dithioketal oxidizes at a lower potential than either of the groups participating in the cyclization. In such cases, product formation is controlled by the Curtin-Hammett Principle. In this study, the generality of such reactions is examined along with the use of alternative reaction conditions to suppress unwanted side reactions.