Beilstein J. Org. Chem.2008,4, No. 51, doi:10.3762/bjoc.4.51
include DCC [1][2], acetic anhydride [3], trifluoroacetic anhydride [4], acetyl chloride [5], phosphorus pentoxide [6], polyphosphoricacid [7], sulfuric acid and sulfur trioxide [6] etc. A few reactions such as the Pummerer reaction [8] and Swern oxidation [9] can be performed via the reactive sulfonium
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Graphical Abstract
Scheme 1:
Synthesis of N,N′-methylenedibenzamide using CC-activated DMSO.