We describe a novel reagent system to obtain acyl fluorides directly from three different functional group precursors: carboxylic acids, aldehydes, or alcohols. The transformation is achieved via a combination of trichloroisocyanuric acid and cesium fluoride, which facilitates the synthesis of various acyl fluorides in high yield (up to 99%). It can be applied to the late-stage functionalization of
TFFH as an Excellent Reagent for Acylation of Alcohols, Thiols and Dithiocarbamates
作者:Jørn B. Christensen、Michael Pittelkow、Fadhil S. Kamounah、Ulrik Boas、Brian Pedersen
DOI:10.1055/s-2004-831250
日期:——
A convenient and easy procedure to synthesize esters and thioesters from the corresponding carboxylic acid using TFFH as the coupling reagent is described. The preparation of N-acyl-dithiocarbamates from carboxylic acids and 1,3-thiazolidine-2-thione with TFFH as the coupling reagent is also described.
[EN] METHODS AND COMPOSITIONS FOR PRODUCING DIFLUOROMETHYLENE-AND TRIFLUOROMETHYL-CONTAINING COMPOUNDS<br/>[FR] PROCÉDÉS ET COMPOSITIONS POUR LA FABRICATION DE COMPOSÉS CONTENANT DU DIFLUOROMÉTHYLÈNE ET DU TRIFLUOROMÉTHYLE
申请人:IM & T RES INC
公开号:WO2009076345A1
公开(公告)日:2009-06-18
New methods for producing difluoromethylene-containing compounds with phenylsulfur trifluoride or a primary alkyl-substituted phenylsulfur trifluoride are disclosed. Also, new methods for producing trifluoromethyl-containing compounds with phenylsulfur trifluoride or primary alkyl-substituted phenylsulfur trifluoride are also disclosed.
FLUOROPICOLINOYL FLUORIDES AND PROCESSES FOR THEIR PREPARATION
申请人:Dow AgroSciences LLC
公开号:US20140031558A1
公开(公告)日:2014-01-30
Provided herein are fluoropicolinoyl fluorides and processes for their preparation. In some embodiments, provided herein is a process for the preparation of 5-fluoro-6-aryl-picolinoyl fluorides from chloropicolinoyl chlorides.
One-pot ester and thioester formation mediated by pentafluoropyridine (PFP)
作者:Liam N. D. Beardmore、Steven L. Cobb、William D. G. Brittain
DOI:10.1039/d2ob01268e
日期:——
Acyl fluorides are valuable synthetic intermediates, but in some cases they can be challenging to handle and difficult to isolate given their susceptibility to degradation. In addition, many reagents utilised to prepare acyl fluorides are incompatible with in situ generation strategies and require the acyl fluoride to be isolated before any further reaction can take place. The combination of these