from 3-Nitrobenzaldehyde and Acetophenone Source: cnx.org The mechanism for the synthesis of 3-nitrochalcone is presented in Figure 2. The alpha carbon on the acetophenone is deprotonated‚ followed by the attack of the alpha carbon anion on the carbonyl carbon on the 3-nitrobenzaldehyde. Next‚ is the protonation of the oxygen from the 3-nitrobenzaldehyde‚ which is then followed by an elimination reaction where this acts as a leaving group. The product is the trans-alkene present in the product
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BIOLOGY 22 MODULE 1 – Chemical Basis of Life v2.0 * Levels of Organization – biological functions are ultimately based on the properties of atoms and molecules * Subatomic particles – neutrons‚ electrons‚ protons * Atoms * Compounds * Complexes of compounds * Organelles – bodies within cells that perform specific functions * Cell * Specific combination of organelles * Can metabolize and reproduce * Least elaborate living structure * Significance
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Amines are essential for the building blocks of life; they are a key component in the formation of amino acids‚ proteins‚ and nucleic acids. Amines contain nitrogen that has one lone pair; this enables it to form 3 covalent bonds with other atoms‚ all while staying neutral. Due to an amines basicity‚ reaction with an acid is very easy and forms a positively charged ammonium ion. As well as being a strong base‚ amines are also quite good nucleophiles. When the nitrogen is directly attached to one
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A process for the preparation of racemic phenylethylamine which comprises contacting an optical antipode therefore‚ e.g.‚ L(-) or D(+)-1-phenylethylamine with sodium amide or sodium hydride. Claim: What is claimed is: 1. A process for preparing racemic 1-phenylethylamine which comprises contacting L(-)-1-phenylethylamine or D(+)-1-phenylethylamine with 0.01 to 1 weight percent‚ based on theamount of said phenylethylamine‚ of sodium amide or sodium hydride at a temperature of 70.degree. to 150
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3-phoshpyglycerate (for each CO2) Phase 2: Reduction Each molecule of 3-phsophoglycerate receives an additional phosphate group from ATP‚ becoming 1‚3-biophosphoglcerate. Next‚ a pair of electrons donated from NADPH reduced 1‚3 biophosphoglycerate to the carbonyl group of G3P‚ which stores more potential energy. G3P is a sugar-the same three-carbon sugar formed in glycolysis by the splitting of glucose. Remember! For every three molecule of CO2 there are six molecules of G3P. But only one molecule of this
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Lab 6: Electrophilic Aromatic Substitution(1) Nitration of Methyl Benzoate(2) Synthesis of 1‚4-Di-t-butyl-2‚5-dimethoxybenzene byFriedel-Crafts Alkylation of 1‚4-DimethoxybenzenePurpose1)To carry out the nitration of methyl benzoate‚ and then identify the major product formed (position at which nitro-group substitution takes place) by thin-layer chromatography (TLC)‚ the percent yield and the melting point range. 2)To synthesize 1‚4-Di-t-butyl-2‚5-dimethoxybenzene by Friedel-Crafts Alkylation of
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Experiment 3: The preparation of acetaminophen (paracetamol) with thin layer chromatography (TLC) to monitor the reaction. Abstract: This experiment is to demonstrate the preparation of paracetamol and its properties. Reflux and filtration of 4-aminophenol and acetic anhydride formed the crude sample. Further analysis of dry white crystals were used to give quantitative measurements and a percentage yield of 46% was obtained. The overall conclusion is that the acetic anhydride reacted with the
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Objective: The purpose of this experiment was to prepare the Grignard reagent methylmagnesium iodide and react it with benzoin to form the 3o alcohol 1‚2-diphenyl-1‚2-propanediol‚ through an addition reaction pathway. Introduction: Grignard reagents are alkyl or aryl-magnesium halides that act as the nucleophile in Grignard reactions‚ where ketones are reacted with the reagent‚ then treated with acid to produce an alcohol. In the case of this experiment‚ methylmagnesium iodide was created
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phenylcinnamic acid the peaks of the wavenumber were at 2952‚ 2518 1672 and 1426 cm-1. The peak at 2952 presents the double bond CH stretch for the alkene carbon. The peak at 2518 presents the carboxylic acid –OH peak. The peak at 1672 could present the carbonyl group. The aromatic ring peaks are around 1600 and 1426-1492. Different values could be seen for the z isomer. The wavenumbers for the IR spectroscopy are 3412‚ 3247‚ 1687 and 1552 cm. The value at 3412 presents the carboxylic acid –OH peak. The
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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