Acetic anhydride

is made when the amine group of 4-aminophenol is acetylated by acetic anhydride to produce paracetamol and the by-product of the reaction, acetic acid. Paracetamol is contains three functional groups; A hydroxyl group (OH), an amide group (HN-CO-R) and an aromatic group (benzene ring).…

Aromatic rings are very unique and therefore can follow very specific reactions in order to add select substituents to its ring. One of those types of reactions is referred to as Friedel-Crafts a reaction, to main sub-categories is Friedel-Crafts Alkylation and Friedel-Crafts Acylation. Both of these types of reactions involve electrophilic aromatic substitution and are work with deactivated rings (Friedel-Crafts Alkylation, 2010). In Friedel-Crafts Alkylation there is usually a secondary or…

4-dihydroxybenzaldehyde in hot acetic anhydride giving 8-substituted-3', 4’-dihydroxystyrylquinolines (5) according to a Perkin-type condensation as depicted in Scheme 2.2 [20]. (4) (5) Scheme 2.2 Zamboni et. al. reported the condensation of the 2-methylquinolines (6) with 3-hydroxybenzaldehyde in hot acetic anhydride 18 hr…

go to competition leaving behind some of the undesired experiment materials. Third, there are several side reactions that occur between the p-aminophenol and acetic anhydride. These side reactions produce substances other than the desired product. When this occurs, there is less desired product…

The first portion of this experiment required the synthesis of salicylic acid from wintergreen oil. To begin, a heating block was set on a hotplate and set to 250℃. A reflux apparatus was set up and securely clamped to a support stand, to be used later in order to conduct the heated reflux for reaction. A boiling flask was obtained and into it went 0.01mol (1.521 g) of methyl salicylate and 15 mL of 6M sodium hydroxide including 3 or 4 boiling chips. The reaction was refluxed and heated from 30…

procedure, the nucleoside is persilylated using a silylating agent, and the acyl function is installed on the amino group using the corresponding acid chloride or acid anhydride. (3) Some acyl functions such as benzoyl, α-phenylcinnamoyl, and naphthaloyl are directly incorporated on the nucleobase using the corresponding anhydride (Watanabe and Fox, 1966; Bhat et al., 1989). Zhu et al. (2003) reported an improved synthesis of N-benzoylated nucleosides by reducing the amounts of…

The War on Drugs 1874 English Researcher C.R. Wright first created heroin by boiling morphine and acetic anhydride. It caused anxiety, vomiting and sleepiness after taken. He soon after stopped his research. 21 years later in 1895 German scientist Heinrich Dreser picked up where Wright left off and started distributing it in available over-the-counter form. As its popularity grew so did its unrestricted distribution. It was available over the counter and sent as free samples in the mail. By…

decolorizing carbon absorbed the nonpolar molecules in the solution, that is, the p-Phenetidine compounds in which the amino groups did not gain an additional proton from the previous reaction. Next, the solution was filtered in a Hirsh funnel. Then, acetic anhydride was added to the filtered solution, causing the solution to turn a light orange-pink color. Finally, Sodium Acetate was added to the solution causing the solution to turn a white cloudy color. The final result of this reaction was…

INTRODUCTION Background The macrocyclic organic molecules Phthalocyanines (1) which are comparable to the naturally occurring porphyrin (2) ring systems shown in (Figure 1). The porphyrin molecule consists up of four pyrrole subunits which are associated in n-conjugation by methine carbons. 1 2 Figure 1: structures of phthalocyanine and porphyrins molcule The compound…

Heroin, like most other popular drugs, is used every day. The most common use for heroin is for recreational purposes. Not only can heroin be injected, but it can be sniffed, snorted, or smoked. This drug can be highly addictive which can lead to death. It also causes lots of harm to your body Heroin is dangerous because of the extensive number of users, the makeup of heroin, the short term effects on users, and the long term effects on users. To begin with, there is an extensive number of…