82251-68-1Relevant academic research and scientific papers
A facile procedure for preparation of carboxylic sulfonic anhydrides under solvent-free conditions
Hajipour,Mazloumi
, p. 137 - 141 (2007/10/03)
A manipulatively one-pot and rapid method for the synthesis of carboxylic sulfonic anhydride from acid chloride or sulfonyl chloride and potassium salt of carboxylic or sulfonic acid under solvent-free conditions is reported. The reaction has been carried out in excellent yield and short reaction time in the presence of DABCO under solvent-free conditions.
A facile synthesis of acid anhydrides
Dubey,Kumar, R. Vinod
, p. 1 - 3 (2007/10/03)
A facile synthesis of symmetric and unsymmetric acid anhydrides using phase-transfer catalysis is described. By this method different types of anhydrides can be obtained in high yields under mild conditions even on microscale levels.
Esterification of Carboxylic Acids with Alcohols Using Benzenesulphonyl and Methanesulphonyl Chlorides
Dharmaratne, H. R. W.,Gunatilaka, A. A. Leslie,Sotheeswaran, S.
, p. 39 - 41 (2007/10/02)
The role of benzene- and methane-sulphonyl chlorides as coupling agents in the esterification of carboxylic acids with alcohols has been investigated.Hindered tertiary alcohols require initial conversion of the acid to the mixed acid-anhydride with benzenesulphonyl chloride.It is necessary to adjust molar ratios for esterification with secondary alcohols so that the intermediate formed is the symmetrical acid anhydride, since mixed acid-anhydrides also give the sulphonates of the alcohols wihich are difficult to separate from the esters.
