Base-Mediated Cascade Rearrangements of Aryl-Substituted Diallyl Ethers
作者:Jolene P. Reid、Catherine A. McAdam、Adam J. S. Johnston、Matthew N. Grayson、Jonathan M. Goodman、Matthew J. Cook
DOI:10.1021/jo502403n
日期:2015.2.6
Two base-mediated cascade rearrangement reactions of diallyl ethers were developed leading to selective [2,3]-Wittig–oxy-Cope and isomerization–Claisen rearrangements. Both diaryl and arylsilyl-substituted 1,3-substituted propenyl substrates were examined, and each exhibits unique reactivity and different reaction pathways. Detailed mechanistic and computational analysis was conducted, which demonstrated
Synthesis of Diverse Allylsilanes Employing Brønsted Acid Catalyzed Reductive Functionalization
作者:Elisabeth L. R. Leonard、Geoffrey R. Akien、Thomas K. Britten、Nahin Kazi、Dean D. Roberts、Mark G. McLaughlin
DOI:10.1002/adsc.202300917
日期:2023.11.21
We present a rapid (0.25–1 h), method to produce functionalised allylsilanes from readily available vinylsilanes. Employing a Brønsted acid catalysed dehydration as the key step, allylsilanes are produced in good yields (22–98%) and, in most cases, as a single geometric isomer. Furthermore, a possible allylation-Cope pathway was discovered for certain substrates and attempts to optimise this are described
Silicon-Directed Rhenium-Catalyzed Allylic Substitutions with <i>N</i>-Hydroxycarbamates, <i>N</i>-Hydroxysulfonamides, and Hydroxamic Acids
作者:Sanjay W. Chavhan、Catherine A. McAdam、Matthew J. Cook
DOI:10.1021/jo501992p
日期:2014.11.21
A rhenium-catalyzed N-selective allylic amination reaction of N-hydroxycarbamates has been developed. This reaction occurs with excellent N/O selectivity and with complete carbon selectivity on the allylic system. The reaction is tolerant of many functional groups and also proceeds with N-hydroxysulfonamides and hydroxamic acids.