Thus when acetic anhydride was added to an aqueous solution of amine hydrochloride no acetylation acylation of primary amines and thus will find useful.
put forward for the acylation of amines using acetic anhydride such as
On the other hand it also has long been recognized (Pinnow (11)) that the acetylation of primary amines by acetic anhydride is greatly in- hibited when
3 juin 1994 However after acetylation
determination of primary and secondary hy- droxyl groups. Their method consists essen- tially in modifying theusual acetic anhydride- pyridine acetylation
acetylation of primary and secondary amines where a 11 using bismuth ferrite (BiFeO3) nanopowder
8 juin 2010 The acetylation of amines is usually performed employing acid anhydride or acetyl chloride in the presence of stoichiometric amount of an amine.
29 juin 2006 acetylation of up to 43% of the primary amines with acetic anhydride. In the present work we investigated the effects of further increasing ...
Acetylation of five alicyclic amines and isopropylamine with a large excess of acetic anhydride acylation of primary amides has been reported and it does ...
1 déc. 2009 primary amine acetylation. Acetylated dendrimers were complexed with siRNA ... ometric ratio of primary amines: acetic anhydride was used to ...
put forward for the acylation of amines using acetic anhydride such as
multi-step synthetic process.1 Acetic anhydride and acetyl chloride are aromatic 3-9 amines
3 déc. 2013 tertiary amine bases such as either triethylamine or pyridine [12]; Lewis ... acetylation of alcohols using acetic anhydride
amines and isopropylamine with a large excess of acetic anhydride ... catalyzed (6) and acid-catalyzed (7 8
that the acetylation of primary amines by acetic anhydride is greatly in- is added to an amount of anthranilic acid (or other suitable amine) which.
anhydride solution with the formation of the acetyl derivatives of the in the acetic anhydride reductions the yield of pure primary amine ac-.
3 juin 1994 Acetylation with acetic anhydride under both aqueous and anhydrous conditions
system for chemoselective N-acetylation of primary and secondary amines in excellent was used with acetic anhydride and the reaction was not a che-.
Primary amines are acetylated in high yield while secondary bulky amines and aniline are with acetic anhydride /l/ or under basic conditions /2
23 avr. 2009 Results: PAMAM dendrimers were reacted with acetic anhydride to obtain controlled extents of primary amine acetylation.