fulltext.study @t Gmail

Different reactivities of acetylene carbonyl compounds under the catalysis by Bronsted superacids and Lewis acids

Paper ID Volume ID Publish Year Pages File Format Full-Text
43414 45968 2008 8 PDF Available
Title
Different reactivities of acetylene carbonyl compounds under the catalysis by Bronsted superacids and Lewis acids
Abstract

Acetylene carbonyl compounds ArCCCOR (R = H, Me, Ph) form vinyl cations ArC+CHCOR or ArC+CHC(OH)+R at the protonation in Bronsted and conjugate Bronsted–Lewis superacids (protic superacids: HSO3F, CF3SO3H, HSO3F–SbF5, CF3SO3H–SbF5, HAlBr4) with a wide range of acidity (Ho ∼ −11 to −22). The vinyl cations react with arenes Ar’H with the formation of alkenylation products ArAr’CCHCOR. On the contrary to protic superacids Lewis acids (AlBr3, AlCl3) activate additionally electrophilic center at carbonyl carbon of the compounds ArCCCOR that leads to the formation of substituted indenes in their reactions with arenes.

Graphical abstractAcetylene carbonyl compounds react with arenes in Bronsted and conjugate Bronsted–Lewis superacids leading to aromatic alkenylation products. Under the catalysis by Lewis acids the reactions of the acetylene compounds with arenes result in the formation of substituted indenes.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Acetylene compounds; Bronsted superacids; Lewis acids; Arene alkenylation; Indene synthesis
First Page Preview
Different reactivities of acetylene carbonyl compounds under the catalysis by Bronsted superacids and Lewis acids
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 336, Issues 1–2, 1 March 2008, Pages 140–147
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us