syntheses of 8-(4-(decyloxy) phenyl)-1‚ 3‚ 5‚ 7-tetramethyl-2‚ 6 dibromo-4-bora‚ 3a‚ 4a-diaza-s-indacene and 8-(4-(decyloxy) phenyl)-1‚ 3‚ 5‚ 7-tetramethyl-2‚ 6 diiodo-4-bora‚ 3a‚ 4a-diaza-s-indacene both commence with the synthesis of 4-(decyloxy) benzaldehyde. Following standard procedures and using the resulting aldehyde‚ along with 2‚4-dimethylpyrole‚ a BODIPY dye was obtained [36]. To facilitate intersystem crossing‚ the 2- and 6- positions of the boradiazaindacene ring system were iodinated with
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Phenol – NaOH: Hydrogen Bonding‚ Ion – dipole‚ and van der Waals forces For Basic Compound(s): Aniline – HCl: Ion – dipole and van der Waals forces For Neutral Compounds: Benzyl alcohol – H2SO4: Hydrogen bonding and van der Waals forces Benzaldehyde – H2SO4: Ion – (induced) dipole and van der Waals forces Q2. Write the balanced chemical equations for solute-solvent combinations that are formed due to chemical reactions. A2. For Acidic Compounds: Benzoic Acid – NaOH 〖C_6 H_5
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The purpose of this experiment was to perform a wittig reaction‚ the horner-emmons wittig specifically‚ reacting an aldehyde with an ylide to make an alkene. This particular variation of the wittig reaction has several advantages: It gives only the trans product; it uses a much milder base that is easier to handle; and it gives a water soluble byproduct which is easy to separate from the product. The reason that these advantages occur is a change in the structure of the ylide. Instead of a tripheylphosphine
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Dispersion Forces Diethyl Ether Dipole – Induced Dipole & London Dispersion Forces Sucrose Water Hydrogen Bonding & London Dispersion Forces Class N (Neutral) Compounds Benzyl Alcohol Sulfuric Acid Hydrogen Bonding & London Dispersion Forces Benzaldehyde Sulfuric Acid Ion – Induced Dipole & London Dispersion Forces Class B (Basic) Compounds Aniline Hydrochloric Acid Ion – Dipole & London Dispersion Forces Class A (Acidic) Compounds Benzoic Acid NaOH Ion – Induced Dipole & London Dispersion
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Infrared Spectroscopy Organic Chemistry Lab 301A B. The purpose of this lab is to study Infrared Spectroscopy‚ which focuses on the study of the electromagnetic spectrum. The area to be studied is the infrared region‚ which is made up of gamma‚ X‚ and UV rays. We want to be able to identify spectra’s to their complementary structures. The background of this experiment particularly deals with the study of compound structure determination‚ and traits. We must be aware of the functional groups
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%=30%Theoretical yield (from prelab): 1.177 gPercent yield(0.48 g)/(1.177 g) ×100 %=40.78% ConclusionThrough this experiment‚ aldehyde reacts with itself in the presence of acetone and base‚ NaOH. Acetone is used as the enolate forming compound‚ adding to the benzaldehyde followed by the dehydration to form a benzal group. As for the low yield (40.78%)‚ it can be attributed to a few factors. The first being that this reaction goes by an equilibrium and that if this was not shifted far enough to the dibenzalacetone
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base is an example of a mixed aldol condensation reaction‚ the Claisen-Schmidt reaction. Dibenzalacetone is readily prepared by condensation of acetone with two equivalents of benzaldehyde -26 -95 113.9 1. Weigh 0.212 g of pure benzaldehyde directly into a 10 x 100 mm reaction tube. 2. 2. Add 1.6 mL 95% ethanol and 2 mL of 3M sodium hydroxide solution. Then add 0.058 g of acetone to the reaction mixture. 3
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Clays are one of the important natural materials‚ which have been examined for catalytic applications. Clays are characterized by a layered structure and hence they are slippery when wet. They are broadly classified as cationic or smectite type (having layer lattice structure in which two-dimensional oxyanions are separated by layers of hydrated cations) and anionic or brucite type (in which the charge on the layer and the gallery ion is reversed complimentary to smectite type). Anionic clays are
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Erythrocyte: Structure & Metabolism หัวข้อบรรยาย 1. Red cell membrane 1. Membrane lipid 2. Membrane skeleton 3. Peripheral proteins 4. Integral proteins 2. RBC metabolism 1. Glycolytic (Embden-Meyerhof) pathway 2. Hexose monophosphate shunt 3. Rapoport-Luebering pathway 2.4 Methemoglobin reductase pathwa 3. Hemoglobin 3.1 Hemoglobin structure 3.2 Hemoglobin synthesis
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A tetrapyrrole compound is a chemical group that consists of four pyrroles that are joined together by covalent bonds‚ forming a porphyrin ring. They are naturally occurring pigments‚ which are used in many biological processes (Berg‚ 2009). The basic structure of a tetrapyrrole is as seen in Figure 1‚ while the basic structure of a pyrrole is as seen in Figure 2. Figure 1.Tetrapyrrole Compound (Berg‚ 2009) Figure 2.Pyrrole (de Man‚ 1999) 2 Chlorophyll groups 2.1 Definition and structures
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