Within the last year
Within the past 3 years
1 - 10 of 23 articles
New acyl(allyl)- and acyl(vinyl)silanes have been synthesized in order to explore cross metathesis or ring-closing metathesis as a new way towards bis(acyl)silanes or unsaturated cyclic acylsilanes, respectively. Metathesis from acylsilanes did not work but their precursors, in particular in...
Allylic ethers undergo insertions of silylenes into C–O bonds to form allylic silanes. Silylene insertion into C–O acetal bonds was also observed. Formation of silylene ylide intermediates led to (1,2)-Stevens rearrangement products as well as (2,3)-sigmatropic products depending upon the...
Chan's diene proved to react with aromatic aldehydes under organocatalytic conditions in presence of a chiral naphthyl-TADDOL derivative to give vinylogous aldols (up to 65% ee) with complete γ-selectivity. A further process of hetero-Diels–Alder cycloaddition, leading to chiral pyran-4-one...
The coupling reactions of alkyl chlorides with silyl enolates catalyzed by InBr 3 , and the coupling reactions of alkyl ethers with silyl enolates catalyzed by the combined Lewis acid of InBr 3 /Me 3 SiBr are described. In both reaction systems, various types of silyl enolates were used to give...
We developed an efficient, practical, and robust method for stereoselective preparations of ( Z )-ketene trimethylsilyl (TMS) thioacetals from thioesters and alkyl (1 Z )- or (1 Z ,3 E )-1,3-bis(TMS)dienol ethers from alkyl β-ketoesters. The former preparation was performed by convenient...
The structures and charge distributions of substituted silenolates (H 2 SiC( O)X) − (X=H, SiH 3 , Me, t -Bu, OMe, NMe 2 ; group A ), (Y 2 SiC( O)H) − (Y=H, F, Me, Ph, SiH 3 , SiMe 3 ; group B ), and (Y 2 SiC( O)X) − (Y=Me, X= t -Bu, and Y=SiMe 3 ; X= t -Bu, OMe, NMe 2 ; group C ) were...
We describe a seven-step total synthesis of the triquinane sesquiterpene (±)-cameroonanol using a Lewis acid-promoted (3+2) cycloaddition of an allylsilane and a modified Fleming–Tamao oxidation as key reactions.
We describe the thermal rearrangement of aldehydes bearing an α-(allyl- or crotylsilyl)oxy substituent. The transformations are best described mechanistically as intramolecular silatropic ene reactions based on stereoselectivity, kinetic and computed transition state data. The overall process...
The reaction of silyl-substituted carbanion 1b with arene-1,2-dicarboxylates 6 , 15 yields indenone derivatives 11 , 16 in a domino process involving silyl C→O migration and elimination. However, in a competing pathway, the initial addition of 1b leads to lactone formation ( 8 , 17 )....
Read and print from thousands of top scholarly journals.
Sign up with Facebook
Sign up with Google
Already have an account? Log in
Save this article to read later. You can see your Read Later on your DeepDyve homepage.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Sign Up Log In
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don’t already have one.
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.