Acetic anhydride

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  • Paracetamol Lab Report

    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).…

    Words: 651 - Pages: 3
  • 2-Styrylquinolines

    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…

    Words: 774 - Pages: 4
  • Advantages And Disadvantages Of Tri-O-Acetyloride

    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…

    Words: 1630 - Pages: 7
  • Phenacetin Synthesis

    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…

    Words: 733 - Pages: 3
  • Synthesis Of Phthalocyanines

    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…

    Words: 1318 - Pages: 6
  • The Benefits Of Heroin

    Heroin, known as one of the deadliest recreational drugs, is making a comeback to the eastern shore. Heroin, derived from the seed of a poppy plant, has a unique molecular structure, making it an interesting topic of discussion. Using this highly addictive drug destroys both your mind and your body. Sudden discontinued use, also known as cutting off “cold turkey”, can bring about intense symptoms of withdrawal, leaving the user feeling incredibly ill, helpless, and desperate for the drug. Heroin…

    Words: 1048 - Pages: 5
  • Chromatography Of Lycopene

    A small burette funnel was filled with column packing solvent at mobile phase, high boiling petroleum, in this case hexane (and then 10%acetone hexane mixture), and Alumina as stationary phase. When adding the sand and the alumina they have to be first mixed with the hexanes in order not to disturb the column. The Lycopene is Red- Orange and more attracted to alumina due to its high degree of Unsaturation, which can be expected to be eluted after Yellow-Orange Carotene pigments. And the other…

    Words: 6386 - Pages: 26
  • Nucleoside's Susceptibility To Depurination

    It is also conceivable that, at lower pH, depurination can occur via protonation of the purine nucleobase at both N1 and N7. The presence of the 2′-OH has a significant effect on the nucleoside’s susceptibility to depurination. For example, guanosine and adenosine are more resistant to depurination compared to deoxyadenosine and deoxyguanosine. Deoxyadenosine itself depurinates 1200 times faster than adenosine (York, 1981). Interestingly, N-acyl-protected purine nucleosides (particularly…

    Words: 1764 - Pages: 8
  • Carbonyl Acetate Lab Report

    Carbonyl compounds undergo various types of reaction. In these reaction the carbonyl carbon or carbonyl oxygen is prone to attack generally by a nucleophile. Different types of carbonyl compounds undergo different types of reactions and the mechanisms of them are also different. The products or by-products or intermediate products of these reactions are very much useful in laboratory synthesis, industry etc. here we will discuss some very much important reactions which are very important for…

    Words: 1316 - Pages: 6
  • Barbiturates Research Paper

    2). HEROIN: Heroin is formed by conversion of morphine which does not require complex equipmentation but more elaborate chemical operation under which morphine is refluxed with acetic anhydride for about 5 hours results into the formation of Diacetyl morphine, i.e., heroin. It is seperated when the solution gets neutralize with sodium carbonate or washing soda in which heroin gets separated as a precipitate. It is collected and purified by treating it with hydrochloric acid by which Heroin…

    Words: 1658 - Pages: 7
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