Nitrogen acetyl chloride reaction

Acylations were often carried out with diaziridines. Twofold acylation is normally observed when two NH groups are present. Most acylations were performed with benzoyl chloride, acetyl chloride or phenyl isocyanate (B-67MI50800). Ring opening reactions during acylation, foreseeable for intermediates of electrophilic attack on nitrogen, were observed only seldom, provided mild conditions were used. 

Use of a large, lipophilic nitrogenous component results in a 1idocaine like, local anesthetic type cardiac anti-arrhythmic drug, lorcainide (20). Synthesis begins with the Schiff s base (1 ) derived by reaction of p-chloro-aniline and borohydride followed by acylation with phenyl acetyl chloride produces amide 1 . Selective hydrolysis with HBr followed by alkylation with isopropyl bromide completes the synthesis of lorcainide (20). ... 

A. 5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione. A flame-dried, 500-mL, three-necked, round-bottomed flask is equipped with a stir bar, nitrogen inlet adapter, and a pressure-equalizing addition funnel fitted with a rubber septum. The flask is charged with 22.0 g of Meldrum s acid dissolved in 153 mL of methylene chloride, and 24.8 mL of pyridine (Note 1), and the mixture is cooled to -25°C (Note 2). A mixture of 18.3 mL of methylene chloride and 13.1 mL of acetyl chloride is slowly added to the reaction mixture via the addition funnel over 1 hr (Note 3). After the addition of the acetyl chloride is complete, the reaction is slowly warmed over 3 hr to... 

An iron-catalyzed multicomponent reaction of aldehyde 4a, acetophenone, acetyl chloride and acetonitrile, which was used as the solvent, gave P-amino ketones such as 32 (Scheme 8.11) [41]. It was assumed that the sequence starts with an aldol reaction of aldehyde and ketone and then proceeds further with a displacement of a P-acetoxy group by the nucleophilic nitrile-nitrogen. 

The most common method to decrease the reactivity of an unshared pair of electrons on an atom is to attach a carbonyl group to that atom. Therefore, the amine is first reacted with acetyl chloride to form an amide. (This reaction and its mechanism are described in detail in Section 19.6. To help you remember the reaction for now, note that the nitrogen nucleophile attacks the carbonyl carbon electrophile, displacing the chloride leaving group.)... 

Aromatic amines are less basic than their aliphatic counterparts. The lone pair on the nitrogen atom is delocalized over the 7t-system of the aromatic ring. Furthermore, the basicity is influenced by substituents on the aromatic ring. Thus 4-nitroaniline (4.5) is less basic than aniline. However, the aromatic amines behave as typical nucleophiles. Alkylation of the nitrogen by alkyl halides leads to the mono- and dialkylanilines. Reaction with acetic anhydride or acetyl chloride affords acetanilides. 

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