3 déc. 2013 Pyridine is a popular catalyst for the acetylation of alcohols using acetic anhydride but is toxic
The treatment of substrates such as alcohols phenols and amines with acetic anhydride (or acetyl chloride) in the presence of pyridine has provided a
Thiols under Catalyst and
9 M) but increases the rate of reaction of pyridine with acetic anhydride. other pyridine-catalyzed acylation reactions presumably.
Aliphatic Alcohols with Acetic Anhydride in the catalysed acetylation occurs very fast and yields are higher than with acetylation in pyridine. Table 1.
Abstract: Oxidation of alcohols with dimethyl sulfoxide and acetic anhydride is reported. with acetic anhydride-pyridine gave in 68% yield
Thiols under Catalyst and
A uniform procedure was then adopted for preparing the acetyl- aminoketones. It consists of heating the amino acid (0.1 mol) with a mixture of equal weights of
compounds are probably those based on the use of acetic anhydride with or without the addition of pyridine.1'23
tially in modifying theusual acetic anhydride- pyridine acetylation mixture by the substitution reacted with the acetylating medium to an ex-.