9 M) but increases the rate of reaction of pyridine with acetic anhydride. other pyridine-catalyzed acylation reactions presumably.
Pyridine acts as an acceptor for the acid by-product formed in the reaction. Pyridine may also react with acetic anhydride however
3 déc. 2013 raised multifold if 4-(dimethylamino)pyridine (DMAP) is used as a ... Reaction of an alcohol with acetic anhydride in the presence of sodium ...
Key words Acetylation · Reaction rate · Pyridine · Diffu- sion · Swelling pyridine–acetic anhydride system and the dimensions of the wood sample.
and inconvenient to execute. Acetylation of hydroxy organic compounds with an excess of acetic anhydride in pyridine generally proceeds smoothly and to.
acetonitrile to give the acetyl coumaran (VI a acetic anhydride in pyridine gives 2-(a-hy- ... rapid reaction but ring acylation requires longer time.
The decarboxylative acylation of glutamic acid by acetic anhydride in the presence of pyridine hasbeen shown to be com- plicated by the -carboxyl group of
27 oct. 2015 also influences the reaction efficiency. Diop et al. [16] have acetylated starch with different ratios of acetic acid and acetic anhydride ...
However no carbon dioxide evolution was observed in the case of phenylmethylaminoacetic acid. Here the reaction product was the acetylated amino acid. The
reaction when applied to furfural and butyric acid have been established or pyridine. ... affect the speed of acetylations with acetic anhydride.