Erythro 2 3 dibromo 3 phenylpropanoic acid melting point. (3R) 2022-10-11

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Erythro 2,3-dibromo-3-phenylpropanoic acid, also known as erythorbic acid, is a chemical compound that is commonly used as a food additive and preservative. It is a white, crystalline solid that is soluble in water and has a melting point of around 169-171°C.

Erythorbic acid is synthesized from D-glucose and is structurally similar to vitamin C (ascorbic acid). It is used in food products as a substitute for vitamin C because it has a similar antioxidant effect, but it is more stable and does not have the sour taste of ascorbic acid.

In addition to its use as a food additive, erythorbic acid has also been used in the production of some drugs, such as antipsychotics and antihistamines. It is also used in the synthesis of other chemicals, including plastics and rubber.

The melting point of erythorbic acid is an important physical property that is used to identify and purify the compound. It is determined by measuring the temperature at which the compound transitions from a solid to a liquid state. This transition is known as melting and is accompanied by an increase in the compound's enthalpy of fusion, or the energy required to melt the compound.

The melting point of erythorbic acid is relatively high compared to other organic compounds, which means that it requires a significant amount of energy to melt. This property can be used to differentiate erythorbic acid from other compounds that may have similar physical and chemical properties.

In conclusion, erythro 2,3-dibromo-3-phenylpropanoic acid, or erythorbic acid, is a white, crystalline solid with a melting point of around 169-171°C. It is used as a food additive and preservative, and has also been used in the production of some drugs and the synthesis of other chemicals. The melting point of erythorbic acid is an important physical property that is used to identify and purify the compound.

Erythro-2,3-dibromo-3-phenylpropanoic acid, also known as erythorbic acid, is a organic compound with the molecular formula C8H8Br2O2. It is a white, crystalline solid with a melting point of around 162-163 °C.

Erythorbic acid is used as a food additive and preservative, primarily to reduce the amount of time required for food products to become ready for consumption. It is an isomer of ascorbic acid (vitamin C), and it has similar antioxidant properties. Erythorbic acid is often added to processed meats, canned vegetables, and other food products to help preserve their color and flavor.

Erythorbic acid is synthesized from D-glucose through a series of chemical reactions. It can also be synthesized from D-erythrose, a simple sugar. The synthesis of erythorbic acid involves the bromination of D-erythrose, followed by a series of reduction and esterification reactions.

Erythorbic acid has several important physical and chemical properties. It is a white, crystalline solid that is soluble in water and slightly soluble in alcohol. It has a melting point of around 162-163 °C, and it is stable in the presence of heat and light. Erythorbic acid is also resistant to microbial degradation, making it an effective food preservative.

In conclusion, erythro-2,3-dibromo-3-phenylpropanoic acid is a white, crystalline solid with a melting point of around 162-163 °C. It is used as a food additive and preservative, and it is synthesized from D-glucose or D-erythrose through a series of chemical reactions. Erythorbic acid has several important physical and chemical properties, including solubility, stability, and resistance to microbial degradation.

[Solved] why does erythro

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

Mass spectra were taken on Shimadzu GCMS QP-1000EX instrument by direct inlet technique, at beam energy 70 eV. From the Karplus graph, the angle is estimated at 167 which is the erythro-2,3-dibromo-3-phenylpropanoic. This was accomplished by refluxing benzaldehyde, phenylacetic acid, acetic anhydride and triethylamine as a base. The chemical equation of a Perkin Reaction can be seen below. Anti addition occurs when the carbon-carbon bond undergoes rotation and syn addition occurs when the intermediate collapses providing the means for a carbocation to form.

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Stereochemistry of Bromine Addition to trans

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

AIBN was measured at. Nam lacinia pulvinar tortor nec facilisis. The IRs for both E and Z can be seen in figure 2 and 3. Pellentesque dapibus efficitur laoreet. The chemicals were added in the following order: hydrocinnamic acid, NBS, AIBN, and acetic acid. The peak at 2518 presents the carboxylic acid —OH peak. Having this division in the experiment one, we can now conclude that substituent in substitution, the nature of the solvent polar or non-polar and the temperatures are the factors of electrophilic substitution on aromatic compounds.

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(2R,3S)

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

Tag: 2,3-DIBROMO-3-PHENYLPROPIONIC ACID 6286-30-2 Related Product Information 2R,3S -2,3-Dibromo-3-phenylpropionic acid 2,3-Dibromo-2-phenylpropionic acid 2R,3R -2,3-Dibromo-3-phenylpropionic acid methyl ester 2,3-DIBROMO-3- 4-METHYLPHENYL PROPANOIC ACID TIMTEC-BB SBB001327 2,3-DIBROMO-3- 4-CHLOROPHENYL PROPANOIC ACID 2,3-DIBROMO-3- 2-BROMOPHENYL PROPIONIC ACID ethyl 2,3-dibromo-3- 4-bromophenyl propanoate. And third is the temperature test. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Nam risus ante, dapib. The peak at 2952 presents the double bond CH stretch for the alkene carbon. A variance in the procedure is that an NMR will also be used to analyze the results. Nam lacinia pulvinar tortor nec facilisis.

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(2S,3S)

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

The aromatic ring peaks are around 1600 and 1426-1492. In step 1, the alkene is the Lewis base that donates an electron pair to H—Br, the Lewis acid, while in step 2, Br¯ is the Lewis base that donates an electron pair to the carbocation, the Lewis acid. General Description Dehydrobromination of α,β-dibromohydrocinnamic acid has been studied in liquid ammonia. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque dapibus efficitur laoreet. The melting point was 199-203°C and the NMR J values angle is at 167 which both prove the erythro-2,3-dibromo-3-phenylpropanoic.

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(3R)

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

The wavenumbers for the IR spectroscopy are 3412, 3247, 1687 and 1552 cm. In this experiment, the stereochemistry of 2,3-dibromo-3-phenylpropanoic was found to determine syn or anti addition of bromines. Lorem at, ultrices ac magna. The reflux apparatus consisted of a 25 mL flask with a stir bar in a water bath. The peak at 1672 could present the carbonyl group.

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Dibromo

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

The PCSpartanPlus molecular modeling system was used on Tuesday, January 17th, to calculate the frequency and the equilibrium geometry. . A condenser was placed on top of the flask so if any evaporated…. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. The mechanism for this reaction can be seen in figure 1.

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2,3

erythro 2 3 dibromo 3 phenylpropanoic acid melting point

Table 1 includes all spectroscopic values for both E and Z isomers of phenylcinnamic acid. Karplus Equation Conclusion For the syn addition of the bromines the mechanism would be the following: For the anti addition of the bromines the mechanism would be the following: The final product was be erythro-2,3-dibromo-3-phenylpropanoic. Sealed in dry,Room Temperature solubility soluble in Methanol form powder to crystal pka 2. The data is backed up by the J values corresponding to the angles at 167 which was the erythro-2,3-dibromo-3-phenylpropanoic as well as with the melting point data which was only a few degrees off of the literature value for erythro-2,3-dibromo-3-phenylpropanoic and around a hundred degrees off of the alternate Make An Electrophilic Addition Reaction By The Bromination Of Cinnamic Acid The purpose of the experiment was to perform an electrophilic addition reaction by the bromination of cinnamic acid. The value at 3412 presents the carboxylic acid —OH peak. They concluded that if any mechanism had a late transition state then syn the syn isomer would occur because there would be an easy access path to the carbon. It went through syn addition as shown by the mechanism because the molecule is more stable with the carbocation next to the benzene ring than it is with the bromine triangle.

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erythro 2 3 dibromo 3 phenylpropanoic acid melting point

Contents include the basic chemical bonding theory; nomenclature of organic compounds; basic organic reactions; mechanisms of the basic organic reactions; organic synthesis and applications of organic chemistry in industry: polymers, petrochemicals, sugars, proteins and pharmaceutical chemistry. The NMR can be seen in figure 4 and 5, while the mass spec can be seen in figure 6. Table of Reagents Reagents Amount Needed moles Amount needed g or mL Trans-cinnamic acid 0. Winter, and Paul D. It covers modern organic chemistry with emphasis on synthesis, mechanisms, structure and current laboratory techniques.

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erythro 2 3 dibromo 3 phenylpropanoic acid melting point

First is the substitution by bromination. Introduction The purpose of this experiment was to determine the mechanism of the reaction of trans-cinnamic acid with the addition of bromines to 2,3-dibromo-3-phenylpropanoic acid. As one lab partner set up the reflux apparatus, the other measured the chemicals used in the lab experiment. After they were added, the temperature was turned up to come to a constant temperature around 80 C. There are several ways that the reaction can go syn or anti, but syn addition will only occur if aided. It was observed as white and had a slight cinnamon smell.

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