Friedel–Crafts reactions of acyl trifluoromethanesulfonates and cyclic acylsulfonium cations generated from acyl fluorides
作者:K.V. Raghavendra Rao、Yannick Vallée
DOI:10.1016/j.tet.2016.06.029
日期:2016.7
Reactive acyl trifluoromethanesulfonates are formed from the reaction of acyl fluorides with trimethylsilyl trifluoromethanesulfonate (TMSOTf). These electrophiles undergo Friedel–Crafts reactions with electron-rich aromatics at room temperature. When a sulfur atom is present at their γ position, their cyclization to acylsulfonium cations is observed and is followed by a rearrangement leading to benzothiepinones
Versatile Palladium-Catalyzed Approach to Acyl Fluorides and Carbonylations by Combining Visible Light- and Ligand-Driven Operations
作者:Yi Liu、Cuihan Zhou、Meijing Jiang、Bruce A. Arndtsen
DOI:10.1021/jacs.2c01951
日期:2022.6.1
We describe the development of a general palladium-catalyzed carbonylative method to synthesize acyl fluorides from aryl, heteroaryl, alkyl, and functionalized organic halides. Mechanistic analysis suggests that the reaction proceeds via the synergistic combination of visible light photoexcitation of Pd(0) to induce oxidative addition with a ligand-favored reductive elimination. These together create
Treatment of laminitis with platelet aggregation inhibitors
申请人:Dussler, Sabine
公开号:EP2497475A1
公开(公告)日:2012-09-12
The present invention relates to the novel use of platelet aggregation inhibitors for the treatment and/or prevention of Laminitis in veterinary medicine. In particular the invention refers to the novel use of specific antiplatelet drugs for the treatment and/or prevention of Laminitis.
The present disclosure relates to polymer coatings covalently attached to the surface of a substrate and the preparation of the polymer coatings, such as poly(N-(5-azidoacetamidylpentyl)acrylamide-co-acrylamide) (PAZAM), in the formation and manipulation of substrates, such as molecular arrays and flow cells. The present disclosure also relates to methods of preparing a substrate surface by using beads coated with a covalently attached polymer, such as PAZAM, and the method of determining a nucleotide sequence of a polynucleotide attached to a substrate surface described herein.
[Bis(2-methoxyethyl)amino]sulfur Trifluoride, the Deoxo-Fluor Reagent: Application toward One-Flask Transformations of Carboxylic Acids to Amides
作者:Jonathan M. White、Ashok Rao Tunoori、Brandon J. Turunen、Gunda I. Georg
DOI:10.1021/jo035658k
日期:2004.4.1
The use of the Deoxo-Fluor reagent is a versatile method for acyl fluoride generation and subsequent one-flask amide coupling. It provides mild conditions and facile purification of the desired products in good to excellent yields. We have explored the utility of this reagent for the one-flask conversion of acids to amides and Weinreb amides and as a peptide-coupling reagent.