Carboxylic acid

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  • Formation Of Carboxylic Acid Group

    As it was demonstrated in Figure 2, the peaks at 1703 and 1727 cm-1 in the MPS-comprising nanohybrids appeared, while the peak at 1745 cm-1 vanished. Through the formation of MPS-comprising nanohybrids, the observation of the new absorption bands (1707 and 1727 cm-1 ) concomitant of the absorption at 1733 cm-1 may be owing to the formation of ester groups through the reaction between carboxylic acid groups of PAA oligomers and silanol groups of silica moieties 12. Besides, in SiO2/PAA hybrids, the O-H bands were broadened with the increase of silica content from 30 to 40 and 40 wt % and gradually shifted from 3100 cm-1 to 3150 cm-1, respectively (Figure 2). These observations may be the consequence of the strong hetero-associated hydrogen bonds…

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  • Carboxylic Acid Synthesis Lab Report

    Purpose: As derivatives of carboxylic acids, esters are abundant compounds that often contribute to the fragrances in flowers, fruits, and coffee. Esters are synthesized from either organic or inorganic acids through a process called esterification. In this reaction, a carboxylic acid (RCOOH) and an alcohol (R’OH) mix in the presence of a strong acid catalyst to form a neutral, water-insoluble ester (RCOO’R) that gives off a pleasant smell. The following is an example of this reaction: The…

    Words: 1378 - Pages: 6
  • Unknown Carboxylic Acid Lab Report

    unknown alcohol and an unknown carboxylic acid for testing. Each group then synthesizes an unknown ester from a Fisher Esterification reaction of the given unknown. Once an ester product is obtained, 1H and 13C NMR, boiling point, and smell testes are run on the final product in order to identify all the given unknowns. Procedures The first step of this week’s lab was to mix 3mL of the unknown alcohol and 6mL of the unknown carboxylic acid in a microwave reaction vessel. To the mixture,…

    Words: 676 - Pages: 3
  • Advantages And Disadvantages Of Tri-O-Acetyloride

    1982) has been widely used. In this 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…

    Words: 1630 - Pages: 7
  • Benzoic Acid Synthesis

    This experiment was conducted to practice a variety of techniques in organic chemistry: separation, mechanisms, acid-base reactions, evaporation, recrystallization, and identification. The goal of this experiment was to identify the unknown mixture of two compounds. The two compounds were separated first by altering the acid components solubility through deprotonation, and then protonating the acid component again to form the separated precipitate. The ether in the neutral layer was evaporated,…

    Words: 1165 - Pages: 5
  • Difference Between Azulene And Naphthalene

    wavelength were recorded. The wavelengths of the substituted azulene compounds were compared to the wavelengths of the unsubstituted azulene in order to determine whether a blue shift or a red shift occurred. For the lab’s second week, seven azulene derivatives were given. They were sketched. Next, it was predicted whether their lowest energy absorption would be blue-shifted or red-shifted from the spectrum of azulene. An Ocean Optics, a cuvette of 90% ethanol, and seven additional cuvettes,…

    Words: 2146 - Pages: 9
  • Raloxifene Hydrochloride Investigation Report

    10.1 SUMMARY The aim of the present investigation was to formulate Raloxifene Hydrochloride Liquisolid compacts, with coadministration of a bioenhancer, for oral bioavailability enhancement. The reason for poor bioavailability (2%) of Raloxifene Hydrochloride is low solubility (100μg/mL) and high hepatic first pass metabolism. According to BCS, Raloxifene Hydrochloride is considered as Class II drug, lipophilic and highly permeable compound. Therefore, formulating Liquisolid Compacts bearing…

    Words: 876 - Pages: 4
  • Ivacaftor Case Study Pricing

    Ivacaftor, C24H28N203, is a 4-oxoquinoline-3-carboxamide molecule which consists of five main functional groups: a quinolone, an amide, a phenol, and two tert-butyls. Quinolones are regularly found in anti-biotics, amides are seen in the synthesis of nylon, phenol can be retrieved from coal tar, and tert-butyl groups are big hydrophobic groups found in tert-butyl alcohol (the simplest tertiary alcohol); none of these functional groups were invented or developed first by the parent company of the…

    Words: 993 - Pages: 4
  • Loratadine

    Co-crystal is a new solid form consists of a single crystalline phase of several components in a certain stoichiometric ratio, where different types of molecules that interact with hydrogen bonds or other non-covalent bonds [12]. The pyridine ring in their chemical structure LOR as shown in Fig. 1a allows the proton transfer with carboxylic acids to form a salt. Furthermore, N of the pyridine ring may also act as a hydrogen bond acceptor, allowing the formation of co-crystal when it binds to the…

    Words: 361 - Pages: 2
  • Esters Lab

    single bond to a carbon, a double bond to an oxygen, and a single bond to an oxygen (Clark, 2004). The single bond oxygen is bonded to another carbon. Esters can be produced through various synthetic routes. Since, esters are produced from mixing carboxylic acids and alcohols, they can synthesized artificially in labs. One possible way to synthesized esters is to react an alcohol and a carboxylic acid. The purpose of this lab was to observe the synthesis of esters and identify the odor of each…

    Words: 1307 - Pages: 6
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