# Carboxylic acid Essays

• ## 4 Oxadiazole Research Paper

1435 Words  | 6 Pages

1,3,4-Oxadiazole (1) is a heterocyclic compound containing an oxygen atom and two nitrogen atoms in a five-membered ring. It is derived from furan by substitution of two methylene groups (=CH) with two pyridine type nitrogens (-N=) [1,2]. There are three known isomers: 1,2,4-oxadiazole (2), 1,2,3-oxadiazole (3) and 1,2,5-oxadiazole (4). However, 1,3,4-oxadiazole and 1,2,4-oxadiazole are better known, and more widely studied by researchers because of their many important chemical and biological properties

• ## Essay On Cellular Respiration

2003 Words  | 9 Pages

These electron chains are oxidised, transferring all of their electrons to their carrier molecules which are embedded in the ECT membrane. NADH enter the electron transport chain. The FADH2 originate in the citric acid cycle. In the first part of this process, electrons that pass from NADH to the electron transport chain, flow through the remaining complexes. NADH is oxidized to NAD during process. In the second part of this process, FADH is oxidized, picking up

• ## Pyridine Lab Report

937 Words  | 4 Pages

Chemical properties Pyridine is miscible with water and virtually all organic solvents.[10] It is weakly basic, and with hydrochloric acid it forms a crystalline hydrochloride salt that melts at 145–147 °C.[25] Most chemical properties of pyridine are typical of aheteroaromatic compound Molecular properties Pyridine has a conjugated system of six π electrons that are delocalized over

• ## Esters Lab

839 Words  | 4 Pages

The ester studied was “3,” the acid used was 9.5 mL of “B,” and the alcohol used was 18.1 mL of “C.” A few substances were added to augment the production of the ester. Sulfuric acid (H2SO4) was added using a dropper bottle to catalyze the reaction. The desiccant in this reaction was drierite and was used to absorb the water byproduct. This prevented the ester

• ## 1.4 Cyclohexanedimethanol?

842 Words  | 4 Pages

iv. 1,4 cyclohexanedimethanol (1,4 CHDM) 1,4 cyclohexanedimethanol is an alicyclic glycol [52], the cycloaliphatic structure of 1,4 cyclohexanedimethanol imparts particular conformational transitions and molecular structure to polyesters [53]. Ni et al [54] stated that polyesters containing cyclic moieties in their backbone are of transitional mechanical properties in comparison to aromatic and linear polyesters. 1,4 cyclohexanedimethanol could provide an excellent compromise between hardness

• ## Aldol Condensation Lab Report

1825 Words  | 8 Pages

cases is dehydrated during the course of the reaction. Even if the dehydration is not spontaneous, it can usually be done easily, since the new double bond will be in conjugation with the C=O bond.   Ritter Reaction Alcohols is converted by a strong acid to a carbocation, which adds to the negative nitrogen. The immediate product tautomerizes to the N-alkyl amide. Only alcohols that give rise to fairly stable carbocation react; primary alcohols do not give the reaction. The carbocation need not be

• ## Polyester Fibre Research

1181 Words  | 5 Pages

Indtroduction: Polyester are polymers made by a condensation reaction taking place between small molecules, in which the linkage of the molecules occurs through the formation of estes groups. Polyesters are commonly made by interaction of a dibasic acid with a dihydric alcohol: HOOC-X-COOH+HO-Y-OH OC-X-COO-Y-OCO-X-COO-Y-OCO The formation of polyester was studied by Wallace H. Carothers of du Point during the investigation of polyesters which lead eventually to the discovery of nylon. Development

• ## Separatory Funnel Lab Report

459 Words  | 2 Pages

Extraction is the process of separating substance from one phase by another phase. It is often used as one of the steps in isolating a product of an organic reaction. A separatory funnel would be used for the isolation from the mixture. A solvent will be used to remove or isolate a compound of interest from a liquid substance. In most cases, water was used as the solvent to the reaction mixture to dissolve the inorganic compound. The organic compounds will be separated from the aqueous mixture by

• ## Recrystallisation Of Aspirin Lab Report

1772 Words  | 8 Pages

(acetylsalicylic acid) is an aromatic compound that contains an ester- functional group and a carboxylic acid- functional group. Aspirin is commonly used as a pain reliever (analgesic), an anti-inflammatory, an anti-coagulant (prevent platelet aggregation) and an antipyretic (to reduce fever) pill. It helps to prevent strokes, heart attacks and blood clot formation. It can be produced from salicylic acid and acetic anhydride, with acetic acid as its by-product. However, salicylic acid consists of the

• ## Rotaverine Simulation Lab Report

1364 Words  | 6 Pages

belongs to class of haemostatic compound that blocks prostacycline synthetase, an enzyme that converts arachidonic acid to Prostacycline and therefore increases platelet aggregation and platelet adhesiveness. It is used for the prevention and treatment of capillary haemorrhage, and postpartum haemorrhage. Ethamsylate is official present in British pharmacopoeia. [3] Tranexamic acid

• ## 5-Trifluoromethyl Oxazole

1350 Words  | 6 Pages

The methods which substitute fluorine for proton at an aimed position in chemicals has an ability to convert into useful pharmaceuticals or functional materials due to fluorine specific potency, and is often used as one of the improvement means. Whereas compounds possessing 2-phenyl-5-methyl oxazole in a structure are known to quite a few, the papers related to 2-phenyl-5-trifluoromethyl oxazole of which substituted trifluoromethyl group instead of a methyl group as a partial structure are not so

• ## Lab Report P Toluic Acid And P-Butylphenol Extraction

1864 Words  | 8 Pages

Aim The purpose of this lab was to separate a mixture of carboxylic acid (p- toluic acid), a phenol (p-tert-butylphenol) and a neutral compound (acetanilide) using solvent extraction. Introduction Solvent extraction is a process that separates compounds from a mixture by a solvent. It involves the transfer of compounds from one liquid solvent to another liquid solvent. The two solvents used in this process should be immiscible to each other for the separation of compounds leading to an organic

• ## Perkin Reaction Lab Report

890 Words  | 4 Pages

(i.e. Sodium and potassium salt of the acid or trimethylamine) to give unsaturated carboxylic acid.(Equation-1)[1].In 1968 Perkin described the very first example of such type condensation reaction, involve the synthesis of coumarin by condensing the sodium or potassium salt of salicylaldehyde with acetic anhydride (Equation-2)[2].Generally such type of reaction is only applicable to aromatic aldehyde and useful for the preparation of substituted cinnamic acid (Equation-3)[3] Equation-1 Equation-2

• ## Hepcidin Lab Report

1069 Words  | 5 Pages

Chemicals The magnetic particles Dynabeads® MyOneTM Carboxylic Acid were from Invitrogen (Life Technologies, Van Alley, CA, USA). The hepcidin standard was obtained from Peptide Institute Inc (Osaka, Japan), N-ethyl-N’-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and 2-(N-morpholino)-ethane sulfonic acid (MES) from Calbiochem® (Merck), and phosphate buffer saline (PBS) from Sigma Aldrich. The solvents used, such as formic acid and acetonitrile, were LC-MS grade and were purchased from

• ## Oxazole Synthesis

1577 Words  | 7 Pages

examination by choosing 5-methoxy -2-phenyl oxazole (2a) as starting material to proceed whether Friedel–Crafts reaction. Although the normal conditions which used Lewis acid such as AlCl3 or TiCl4 with TFAA in DCE did not proceed to acylation, the reaction of introducing trifluoroacetyl group at the C4-position of oxazole without Lewis acid gave substituted oxazole (4a). Contrary to our expectations, isolated oxazole had been not trifluoroacetylated derivative (3a), reaching rearrangement compound (4a)

• ## Poly Sulphone Lab Report

1682 Words  | 7 Pages

2.2. AEM preparation The poly sulphone based anion exchange membrane was prepared using three methods: (1) chloromethylation, (2) quaternization and (3) alkalization. The schematic diagram for the preparation of the QPSU is shown in Fig. 1. [Figure 1] 2.2.1. Chloromethylation of poly sulphone 5 g of polysulphone was dissolved in 75 mL of chloroform at 70°C. After complete dissolution of polymer, a mixture of paraformaldehyde (3.4 g) and chlorotrimethylsilane (14.7) mL was prepared as the chloromethylating

• ## Ethylene Dibenzoate Synthesis Lab Report

1086 Words  | 5 Pages

We started our work with a reference paper, where ethylene di-benzoate(EDB) was taken as sample molecule. We studied the $\beta$-elimination reaction of EDB as a model system in order to follow the thermal degradation of polyethylene terephthalate(PET). In this system the carbon in the ester linkage turns into a nucleophile and interacts with the $\beta$-hydrogen atom of glycol unit. This resulted in the formation of six centred cyclic transition state. In vacuum, the final Gibbs free energy which

• ## Cis Conformation Lab Report

969 Words  | 4 Pages

For this experiment, stereochemistry was observed by analyzing both the isomerization of dimethyl maleate and carvones. The dimethyl maleate is formed by two methyl ester groups that are connected by an alkene. They are in a cis-conformation meaning they are on the same side of the alkene, therefore the esters are close to one another. This conformation is strained and sterically hindered due to electrons repelling each other and are enantiomers of one another. With the use of radical chemistry,

• ## Nucleophilic Substitution Reactions Lab

1039 Words  | 5 Pages

Experiment 2 Report Scaffold (Substitution Reactions, Purification, and Identification) Purpose/Introduction 1. A Sn2 reaction was conducted; this involved benzyl bromide, sodium hydroxide, an unknown compound and ethanol through reflux technique, mel-temp recordings, recrystallization, and analysis of TLC plates. 2. There was one unknown compound in the reaction that was later discovered after a series of techniques described above. 3. To purify and identify the product, recrystallization is used

• ## Methyl Benzoate Lab Report

1000 Words  | 4 Pages

Michael Bent Mohamed Mire CHEM 220-12 4/13/2016 Methyl Benzoate Labs The first part of the lab regarded an esterification leading to the formation of Methyl Benzoate (C8H8O2). The purpose of this lab was to convert benzoic acid to methyl benzoate by means of utilizing a reflux acid catalyzed reaction with methanol; purity of the final product was assessed by means of both proton and carbon NMR. The extent to which a reaction’s products are reverted back into the original reactants is denoted by the