Domino Alkene-Isomerization–Claisen Rearrangement Strategy to Substituted Allylsilanes
摘要:
A one-pot isomerization Claisen protocol has been developed for the synthesis of highly substituted allylsilanes. Monosilylated divinyl ethers can be isomerized using a cationic iridium(I) catalyst followed by a thermal Claisen rearrangement to provide the allylsilanes in excellent yields and diastereoselectivities.
PtCl2/XPhos: A highly efficient and readily available catalyst for the hydrosilylation of propargylic alcohols
作者:Mark G. McLaughlin、Matthew J. Cook
DOI:10.1039/c1cc14433b
日期:——
A highly regioselectivehydrosilylation of propargylicalcohols has been developed using an in situ prepared PtCl(2)/XPhos catalyst system. The reaction is tolerant of many functional groups and exhibits excellent regio and geometric selectivity.
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